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Home My WebLink About861385.tiff dP _ ^.r _ _ . %3L r n 0 861385 TECHNICAL GUIDE Colorado-All Field Offices Section III-I-B January 1980 GUIDE TO DEVELOPMENT OF RESOURCE MANAGEMENT SYSTEMS FOR NON-IRRIGATED CROPLAND A. EVALUATION OF PRESENT CONDITIONS A soil survey, or similar soils information, is necessary for evaluation and development of resource management systems for non- irrigated cropland. Soils descriptions and land capability interpretations contained in soil survey reports indicate suitability of soils for cropland uses. Next, evaluate the cropping system. Consider whether the cropping system has the potential, given prevailing climate and soil, to produce enough vegetation and crop residues for soil protection during normal erosion periods. The Universal Soil Loss Equation (USLE) and the Wind Erosion Equation (WEQ) will usually be used to evaluate effectiveness of the existing resource management system in controlling sheet, rill, and wind erosion. Where erosion is severe, the evaluation can readily be made by field observation. Since the USLE does not provide an estimate or prediction of soil lost by channel and gully erosion, evaluation of these soil losses must be made by field observation. The evaluation should recognize secondary uses, such as wildlife or recreation, and consider impacts of the resource management system upon water and air quality. Finally, the evaluation should assess economic costs and returns inherent in the system. The degree of detail in this step will depend on available data and the needs and desires of the landuser. Look for costly, energy consuming cultural practices that lead to soil compaction, pulverization of top soil, breakdown of soil structure, and unwanted destruction of surface residues. A thorough evaluation of the existing resource management system, in the manner prescribed, should define problems and suggest system alternatives. -1- TECHNICAL GUIDE Colorado-All Field Offices Section III-I-B January 1980 B. DETERMINING RESOURCE MANAGEMENT SYSTEM GOALS Specific goals for management of non-irrigated cropland will vary according to the conservation needs of the land and the objectives of the landuser. Goals should be established to (1) keep or reduce soil losses from wind and water erosion to acceptable limits; (2) retain snow and rainfall on the land and conserve soil moisture; (3) meet objectives of the landuser both as to his preferred production system and desired level of economic return; and (4) prevent or minimize air and water pollution. Goals for reduction of soil losses from sheet, rill, and wind erosion may be established at the soil loss tolerance value (T value) assigned to a given soil, or at a lower level. (Refer to Soils of Colorado, Loss Factors and Erodibility, Hydrologic Groupings, 1979, SCS, USDA). In addition, goals should address healing of existing head cuts, gullies, and critically eroding areas. Other concerns for which goals may be established include energy conservation, beautification. control of noxious weeds, wildlife habitat, recreation, and air and water pollution. C. GUIDE FOR DEVELOPING RESOURCE MANAGEMENT SYSTEMS FOR NON-IRRIGATED CROPLAND. Soils used for non-irrigated cropland should meet or exceed criteria for land capability Class IV land as described in Agronomy Technical Note No. 56, Revised May 15, 1979. Class IV land will require more intensive treatment and management than Class II and III land. In semi-arid areas of the state, consideration should be given to the likelihood of crop failure or very low production in two or more consecutive years because of drought. The resource management system must provide for soil protection measures to be applied during these periods of low vegetative production. Where Class VI lands are to remain in cropland, unusually intensive management systems must be applied to protect the soil from erosion. Such a system might include extremely narrow field widths, elimination of all but close growing high residue crops, no fallow period, sacrifice of harvest to leave protective plant material on the soil, no-till techniques, planting crops only when soil moisture is adequate to regenerate protective cover, etc. Generally, the intensive practices required for soil protection make farming Class VI lands uneconomical over the long term. -2- TECHNICAL GUIDE Colorado-All Field Offices Section III-I-B January 1980 The resource management system developed should provide for attainment of the following quality levels: 1. Soil losses from sheet, rill, and wind erosion, do not exceed T values assigned to the soil being farmed. This requirement may be considered attained when predicted total soil losses using the USLE and the WEQ, are no greater than 125 percent of the T Value. 2. Erosion from drainageways, waterways, and outlets (gully erosion) is reduced to insignificant levels, as determined by field observation. 3. The system is compatible with objectives of the landuser from the standpoint of types and production levels of crops. 4. Implementation of the system is within the desires and capabilities of the landuser. 5. Measures to benefit wildlife and the environment are incorporated into the system where feasible and practicable. SELECTION OF PRACTICES A conservation cropping system is an essential practice. It must be capable of producing adequate amounts and kinds of residues required for soil protection. Equally essential, tillage systems selected for weed control and seedbed preparation must leave residues on the soil surface during periods of historically serious wind and water erosion. Cultural practices that leave the surface soil rough, cloddy, or ridged are often necessary to supplement available crop residues. Some of the Conservation practices commonly used are: Conservation Cropping System Conservation Tillage System Contour Farming Grassed Waterway Striperopping Stubble Mulching Terrace Systems Section IV of the Technical Guide contains a complete list of conservation practices, many of which are applicable to non-irrigated cropland. Any applicable practice may be selected for purposes of meeting resource management system goals. -3- A GUIDE FOR PREDICT/NC SO/L LOSS from water erosion in COLORADO ! .. . ./. . TECHNICAL NOTE 50 (REVISED FEB. 1984) • -4. :::::::JEEEE!!:[7-7,470:11. t -S. ` COLORADO • SOIL CONSERVATION SERVICE , ' 4"_t • . U.S. DEPARTMENT OF AGRICULTURE ' ' t ' V • • r ////////////////////////// a ////i ////////////// /// //////// ////////iii /////////////////////////////// / /////////// //////////////// /////// ///////////////////// /////////////////////////////// TABLE OF CONTENTS Section I The Universal Soil-Loss Equation Section II Procedure For Estimating Average Annual Soil Loss Resulting From Water Erosion (Sheet and Rill) Section III Predicting Soil Loss For Periods Less Than 12 Months Section IV Predicting Soil Loss Through Erosion From Thaw and Snow Melt Section V Use Of USLE On Construction Sites Section VI Determining Soil Loss From Other Types of Erosion Table 1 Estimated Relative Soil Losses From Successive Equal-Length Segments of a Uniform Slope Table 2 Values Of The Topographic Factor "LS" Table 3 Crop Management Factor "C" Eastern Colorado Table 4 Crop Management Factor "C" Western Colorado Table 5 Crop Management Factor "C" For Irrigated Crops Table 6 "C" Factors For Permanent Pasture and Rangeland Table 7 "C" Factors For Various Quantities Of Mulch Table 8 "C" Factors For Woodland Table 9 "P" Factors For Conservation Practices Table 10 Annual Distribution Of Erosion Index In Western Colorado Table 11 Annual Distribution Of Erosion Index In Eastern Colorado Figure 1 Rainfall and Runoff Factors "R" For Use With The Universal Soil Loss Equation (USLE) Figure 2 Erosion Index Distribution Curve For Computing Factor "R" For Less Than 12 Months Figure 3 Soil Nomograph For Determining Factor "K" TECHNICAL NOTES . U.S.DEPARTMENT OFAGRICULTIIRE PATE OF COLORADO SDI LSQNSERVATIONSERVICE • AGRONOMY NOTE #50 (revision #2) ) August 1982 =Compiled by Carrol E. Hamon, Conservation Agronomist UNIVERSAL SOIL-LOSS EQUATION The Universal soil—loss equation is a quantitative means of predicting soil loss from sheet and rill erosion as a result of rainfall. It can be used as a guide on all land uses in planning conservation practices to reduce soil loss to tolerable limits. It is an empirical formula; based on research, experience and observation and good judgment must be exercised in deriving the values for each of the factors. SECTION I The Universal Soil—Loss Equation The soil—loss equation is: A = RKLSCP Where A is the soil loss (Tons/Acre/Year): R, the rainfall and runoff factor K, soil erodibility factor L, slope length combined into an LS factor S, slope—steepness C, the cover and management factor P, erosion control practice factor To arrive at the soil—loss in tons/acre/year merely multiply the factors together. Therefore, the smaller the factors, the smaller the amount of soil loss from erosion. Hence, it is imperative that the technician use good judgment in arriving at the various factors. R (rainfall) factors are assigned by geographical regions based on weather data furnished by the U.S. Weather Service. R values are based on rainfall amount, time, and intensity. In the mountains, R values were computed primarily for valley areas and have been increased to account for run—off from snowmelt. An iso—erodent map, "R" factor map, has been developed for the entire state. In the mountain regions it was necessary to generalize to a large extent because of the wide variation in rainfall patterns. See figure 1. M-4335 usobscs.YnupD. onG in, The rainfall information has been plotted on curves for various locations. This information can be used to predict erosion for periods less than 12 months. See figure 2. This will be discussed in more detail in the example section of this technical note. K (soil erodibility) factors are assigned each soil series. Soil scientists have developed a listing of "K" factors for all soil series being mapped in Colorado. The "K" factor will change for a given soil series as different horizons are exposed by a land disturbing activity. Therefore, it was necessary to assign "K" factors for the various soil horizons occurring in a soil series. K values are determined by use of a nomograph. See figure 3. Refer to "Erodibility and Loss Factors for Soils of Colorado" to determine "K" factors for soils of Colorado. An SCS soil scientist should be consulted for assist- ance if additional "K" values are needed. LS (length and percent slope) factors account for the length and percent slope. These factors will be taken from table 2. Length of slope begins at the top of the micro-watershed. This is usually the top of a hill, ridge, terrace, or diversion. The length of slope is consi- dered to end for a given field at one of the following places: (1) the point where the slope decreases to the extent that deposition occurs, (2) the point where runoff enters a well-defined channel, gully, terrace, or diversion, (3) where water leaves the field, or (4) in general not to exceed 400 feet. If terraces or diversions are used to achieve the proper LS factor for the given situation, they must be constructed in accordance with appropriate engineering standards and specifications. Uniform slopes are ideal for use in the USLE, but are uncommon. Slopes are usually convex (steepening substantially toward the lower end) or concave (flattening toward the lower end). When the lower end of the slope is steeper than the upper end (convex slope), the gradient of the steeper segment should be used with the overall slope length to enter the LS chart. On a concave slope, deposition may occur at the lower end of the slope. In such cases, the appropriate length and gradient are those of that segment of the slope that is above the point where it flattens enough for deposition to occur. A combined LS for irregular slopes can be routinely derived by combining selected values from the slope—effect chart table I and 2. Divide the slope into equal—length segments. List the segment gradients in the order in which they occur on the slope, beginning with the upper end. Enter the slope—effect chart with the total slope length and read LS for each of the listed gradients. Multiply these by the corresponding factors from table 2 and add the products to obtain LS for the entire slope. The following tabulation illustrates the procedure for a 400—ft. convex slope on which the upper third has a gradient of 5 percent; the middle third, 10 percent; and the lower third, 15 percent. -2- Segment Percent Slope Table Table Product 1 5 1.00 0.19 .190 2 10 2.80 .35 .980 3 15 5.00 .46 2.300 LS = 3.470 The new LS becomes 3.470. Table 1. Estimated relative soil losses from successive equal-length segments of a uniform slope. Fraction of soil loss Sequence number Number of segments of segment m = 0.5 m = 0.4 m = 0.3 2 1 0.35 0.38 0.41 2 .65 .62 .59 3 1 .19 .22 .24 2 .35 .35 .35 3 .46 .43 .41 4 1 .12 .14 .17 2 .23 .24 .24 3 .30 .29 .28 4 .35 .33 .31 5 1 .09 .11 .12 2 .16 .17 .18 3 .21 .21 .21 4 .25 .24 .23 5 .28 .27 .25 m = slope-length exponent (0.5 for slopes > 5 percent, 0.4 for 4 percent slopes, and 0.3 for 3 percent or less). For the concave slope of the same length, with the segment gradients in reverse order, the values in the third column would be listed in reverse order. The products would then be 0.973, 0.959, and 0.492, giving a sum of 2.42 for LS. C (cropping - management) factors are the ratios of soil losses from lands cropped under specified conditions to the corresponding losses from tilled, continuous fallow. Cropland C values will be taken from table 3, 4 or 5. Select the appropriate charts, then select the correct cropping sequence for the given field. It will be necessary to exercise good judgment when selecting C values. All crops are not listed, because many are similar. There would be no appreciable difference between wheat and barley. Also, there would be no appreciable difference between corn harvested as silage and sorghum; planted in rows, harvested as bundles. -3- If additional C values are needed, notify the State Agronomist. He is respon— sible for their computation. "C" factors for land uses other than cropland are included on table 6, 7 and 8. The percent ground cover is the primary item to consider because a slight change in percent ground cover will result in a significant change in the erosion prediction. Table 7 was developed for use on critical areas and various land disturbing projects. It should be recognized that straw mulch begins to lose its effectiveness after a few months depending on moisture, temperature, soils, etc. The "C" factors shown in tables 3, 4, 5, 6, 7 and 8 are for the most part single cropping systems. To arrive at a "C" factor for longer crop rotations, simply arrive at the "C" factor for single crop systems in the rotation and average by the number of years in the rotation. For instance, a seven year rotation of 1 year barley, 4 years alfalfa, 1 year of sugar beets and 1 year corn for grain in MLRA G67. 1 yr. barley .230 4 yr. alfalfa (4 x .02) .080 1 yr. sugar beets .369 1 yr. corn for grain .368 1.047 e 7 = 0.150 Your new "C" factor for this rotation would then become 0.15. P (erosion control practice factor) . By definition, factor P in the USLE is the, ratio of soil loss with a specific support practice to the corresponding loss with up and down slope culture. In general, whenever sloping soil is to be cultivated and exposed to erosive rains, the protection offered by sod or close—growing crops in the system needs to be supported by practices that will slow the runoff water and thus reduce the amount of soil it can carry. The most important of these support— ing cropland practices are: (1) Cross slope tillage. (2) Contour tillage. (3) Cross slope striperopping (field striperopping). (4) Contour striperopping. (5) Terraces. Cross Slope Tillage Cross slope tillage is simply the process of doing all the normal tillage operations such as plowing, discing, planting and cultivating across the general slope of a given field. Contour Tillage Contour tillage is the practice of performing all the tillage practices such as plowing, discing, planting and cultivating on a contour line with a flat to a very slight grade. -4- Cross Slope Striperopping This practice uses alternate strips of a specified even width of growing crops and sod or fallow across the general slope of a given field. Contour Striperopping Contour striperopping is using alternate strips of a growing crop with strips of sod or fallow. Strips will be on an even contour or with only a slight grade usually not more than 2 percent. Terracing A practice of building a channel with a ridge across the slope on a flat or very slight grade to intercept the runoff and hold it or convey it to a sod waterway or other means of disposal. Terracing in combination with other practices above are more effective than terracing alone because it positively establishes the slope length. "P" factors to be used in the USLE for the practices listed above can be found in Table 9. SECTION II Procedure for Estimating Average Annual Soil Loss Resulting from Water Erosion (Sheet and Rill) R-rainfall factor: "R" values for each county are shown on the state map (Figure 1). See Section III to determine "R" for only a portion of the year. K—soil erodibility factor: "K" values for each soil are shown in the field office Technical Guide, or may be found in the publication "Soils of Colorado". L—slope length factor: Estimate slope length in the field. Slope length is the distance from the point of origin of overland flow to the point where (1) slope decreases to the extent that deposition begins or (2) runoff enters a defined channel. If the field is terraced, L is the distance between terraces. S-slope gradient factor: Estimate percent of slope in the field. LS-Slope-Effect factor: Values for slope length and slope gradient are combined into the Slope-Effect factor (LS). When slope length and gradient have been determined, the LS value is found (table 2). C-cropping-management or plant cover factor: Tables 3, 4, and 5 show cropping-management "C" factors for various crops and tillage practices in rotation on cropland. Year "C" values were combined to calculate "C" values for various crop rotations. To determine factor "C" for land uses other than cropland, refer to tables 6, 7, and 8. -5- P-erosion control practice factor: Table 9 shows values of "P" for cross- slope farming, contouring, and striperopping. Example Situation: A farmer is growing winter wheat near Craig, Colorado. He uses a wheat fallow rotation, plows with moldboard in the fall and by planting time, no residue remains on the soil surface. The soil map shows that the dominant soil in the field is Evanston loam. Field examination shows the slope length is approxi- mately 400 ft. and the slope is approximately 6%. The farming operations are generally up and down the slope. What is the predicted average annual soil loss in tons per acre? Solution: Use the Universal Soil Loss Equation A = RKLSCP or Soil-Loss calculator. Step 1 Determine "R" from Figure 1. R = 40 Step 2 Determine "K" from "Erodibility and Loss Factors for Soils of Colorado". K = .24 Step 3 Determine the combined "LS" factor from Table 2. LS = 1.35 Step 4 Determine factor "C" from Table 4 Wheat-Fallow, Fall plowing, 100 lbs. residue/Ac. C = .46 Step 5 Determine factor "P" from Table 9. Up and down slope farming operations. P = 1.0 Step 6 Multiply (R = 40) x (K = .24) x (LS = 1.35) x (C = .46) x (P = 1.0). The product of these factor values indicate that approximately 5.96 tons/acre/ year of erosion occurs on the field. Planning Considerations The soil loss tolerance, T Factor, for Evanston loam is 5 tons. The predicted soil loss of 5.96 tons/acre/year is excessive and in order to have an adequate resource management system the predicted soil loss from wind and water must be reduced to 5 tons/acre/year or less. Wind erosion is not considered signifi- cant in this county so practices that will reduce water erosion will be the primary concern. -6- Water erosion can be reduced by the following: 1. Leaving additional crop residue 2. Changing the cropping system 3. Shorten the slope with diversions or terraces 4. Install a striperopping system 5. Perform contour farming in combination with terraces. See footnote 1/, Table 9. The most acceptable solution to the erosion hazard would probably be to improve the residue management program. For example, if the farmer would agree to leave his crop residue standing through the winter, and plow in the spring leaving approximately 500 lbs. of residue at planting time, his soil loss would be reduced to 3.1 tons/acre/year. SECTION III Predicting Soil Loss for Periods Less Than 12 Months The information in this section provides a procedure for predicting soil loss for any period of time within a year. For example, project areas may be bare for a short period of time and then be mulched or protected by temporary seeding. To accomplish this it is necessary to determine the percentage of factor "R" that will occur during a given time span of the year. Figure 2 can be used to determine the adjusted factor "K". Example Situation A critical area treatment project is planned in Fremont County. The entire drainage area of 30 acres will be shaped, mulched and seeded. Sediment basins will be constructed to retain the predicted amount of sediment. The struc— tures will be designed to retain sediment for a two year period beginning immediately after shaping. What is the predicted soil loss during the two year period? Can we convert this to sediment yield? Step 1 Determine values for R, K, LS, and P. R = 40, K = .34, LS = 6.0 (60 ft. x 30%), C (to be determined for each stage), P = 1.0. Step 2 Determine adjusted "R" values by use of E.I. distribution curves. See Figure 2, then determine "C" values for each cover condition. 1st Stage - Bare soil, August 1st to November 1st. R = 8.8 (40 x 22%) x K = .34 x LS = 6.0 x C = 1.0 (bare ground) x P = 1.0 = 17.9 tons/acre 2nd Stage - Mulch and seed, November 1st to August 1st R = 31.2 (40 x 78%) x K = .34 x LS = 6.0 x C = .06 (see Table 7 ) x P = 1.0 = 3.8 tons/acre 7 3rd Stage — Growing grass, 2nd year, August 1st to August 1st R = 40 (full year) x K = .34 x LS = 6.0 x C = .07 (50% ground cover including mulch) x P = 1.0 = 5.7 tons/acre Step 3 The predicted soil loss for the first two years after construction is 822 tons (27.4 x 30 Ac). This data is based on average climatic conditions, so the engineer may want to apply a safety factor. A geologist or engineer can use the predicted soil loss, determine a sediment delivery ratio and calculate the amount of sediment the structure will need to retain. -8- o o ul u1 u1 0 00n n n n n W W o N MW O. v1 NMW N O W .0ou1O 00 00W 0' O .. NN M 0 .. N MM S S S S in V1 ul ul .O N O .O N .0O .n ul0 000 of V1OOn W W 0. 00 -. .-I .- .. W .. 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N 00000 00000 0 • .. -' •. -. .. -. .. -. .-. .. . • . • • . • . • . • 0 a a .. .+ w WW0. • 00000 00000 00000 00000 0 0 O .0 w C V S .D WO .-� .N. r S ✓1 ' W 0 0 0 0 0 0 0 0 0 N M S V1 .0 n W 01 0 a U . . .. -9- TABLE 3 CROP MANAGEMENT FACTOR "C" EASTERN COLORADO Management Cropping Sequence Practice "C" Factor Wheat, grain sorghum Minimum tillage & fallow Fallow operations (wheat) alone - summer & tall 3 or 4 - spring 6 summer 500-1,000 lbs. wheat residue 0-200 lbs. sorghum residue 0.38 200-500 lbs. sorghum residue 0.38 500-1,000 lbs. sorghum residue 0.33 1,000-1,500 lbs. sorghum residue 0.27 1,500-2,000 lbs. sorghum residue 0.24 2,000-2,500 lbs. sorghum residue 0.22 Wheat, tallow Minimum tillage corn (grain), fallow Fallow operations None-summer 6 tall 3 or 4 - spring & summer 500-1,000 lbs. wheat residue 500-1,000 lbs. corn residue 0.32 Wheat, corn (grain), Minimum tillage fallow Fallow operations (wheat) None - summer & tall 3 or 4 - spring 6 summer 500-1,000 lbs. wheat residue 500-1,000 lbs. corn residue 0.34 1,000-1,500 lbs. corn residue 0.28 1,500-2,000 lbs. corn residue 0.25 2,000-2,500 lbs. corn residue 0.23 Corn (grain) 6 fallow Minimum tillage Fallow operations None - summer & tall 3 or 4 - spring & summer 500-1,000 lbs. residue 0.50 1,000-1,500 lbs. residue 0.40 1,500-2,000 lbs. residue 0.34 2,000-2,500 lbs. residue 0.31 Grain sorghum 6 fallow Minimum tillage Fallow operations None - summer 6 fall 3 or 4 - spring & summer 0-200 lbs. residue 0.61 200-500 lbs. residue 0.51 500-1,000 lbs. residue 0.50 1,000-1,500 lbs. residue 0.39 1,500-2,000 lbs. residue 0.33 2,000-2,500 lbs. residue 0.30 Continuous grain Minimum tillage 0.44 sorghum Conventional tillage 0.52 Till planting 500-750 lbs. sorghum residue 0.56 750-1,000 lbs. sorghum residue 0.46 1,000-1,500 lbs. sorghum residue 0.36 1,500-2,000 lbs. sorghum residue 0.28 2,000-3,000 lbs. sorghum residue 0.22 3,000-4,000 lbs. sorghum residue 0.15 4,000-6,000 lbs. sorghum residue 0.07 •Till planting - Seedbed preparation consists of stalk cutting and light disking. Seedrow zones only 8 to 12 inches wide. -10- TABLE 3 (Cont'd) CROP MANAGEMENT FACTOR "C" EASTERN COLORADO Management Cropping Sequence Practice "C" Factor Wheat & fallow Minimum tillage Fallow operations 1-summer & fall 3-spring & summer 500-1,000 lbs. residue 0.23 1,000-1,500 lbs. residue 0.13 1,500-2,000 lbs. residue 0.07 Wheat & fallow Minimum tillage Fallow operations None-summer 6 fall 4-spring 6 summer 0-200 lbs. residue 0.39 200-500 lbs. residue 0.31 500-1,000 lbs. residue 0.21 1,000-1,500 lbs. residue 0.14 1,500-2,000 lbs. residue 0.09 Wheat 6 fallow Minimum tillage Fallow operations 1-summer b fall 4-spring & summer 0-200 lbs. residue 0.49 200-500 lbs. residue 0.37 500-1,000 lbs. residue 0.25 1,000-1,500 lbs. residue 0.15 1,500-2,000 lbs. residue 0.09 Wheat 6 fallow Conventional tillage Fallow operations 2-summer & fall 6-spring 6 summer 0-200 lbs. residue 0.57 200-500 lbs. residue 0.46 Wheat & tallow Conventional tillage Fallow operations 1-summer & fall 7-spring 6 summer 0-200 lbs. residue 0.55 200-500 lbs. residue 0.45 Wheat & tallow Conventional tillage (Moldboard plowing) Fall plowing 0.55 Wheat & fallow Conventional tillage (Moldboard plowing) Spring plowing 0,37 —11— TABLE 4 CROP MANAGEMENT FACTOR "C" WESTERN COLORADO Management Cropping Sequence Practice "C" Factor Winter wheat & fallow First fallow operation in fall of year Moldboard plow No residue 0.46 Minimum tillage 0-200 lbs. residue 0.42 200-500 lbs. residue 0.31 500-1,000 lbs. residue 0.23 1,000-1,500 lbs. residue 0.13 1,500-2,000 lbs. residue 0.07 Winter wheat First fallow operation Fallow in spring of year Winter wheat (frozen out) Spring wheat Moldboard plow Fro residue 0.47 Minimum tillage 0-200 lbs. residue 0.44 200-500 lbs. residue 0.35 500-1,000 lbs. residue 0.22 1,000-1,500 lbs. residue 0.15 1,500-2,000 lbs. residue 0.10 Continuous Moldboard plow Winter wheat No residue 0.34 Minimum tillage D-200 lbs. residue 0.34 200-500 lbs. residue 0.31 500-1,000 lbs. residue 0.18 1,000-1,500 lbs. residue 0.13 1,500-2,000 lbs. residue 0.09 Continuous wheat Moldboard plow -Winter wheat No residue 0.58 (frozen out) -Spring wheat Minimum tillage 0-200 lbs. residue 0.58 200-500 lbs. residue 0.56 500-1,000 lbs. residue 0.34 1,000-1,500 lbs. residue 0.21 1,500-2,000 lbs. residue 0.13 Winter wheat & fallow First fallow operation in spring of year Moldboard plow No residue 0.33 Minimum tillage 0-200 lbs. residue 0.29 200-500 lbs. residue 0.24 500-1,000 lbs. residue 0.16 1,000-1,500 lbs. residue 0.12 1,500-2,000 lbs. residue 0.09 Continuous beans 0.59 1 yr. beans & 1 yr. wheat 0.2/ 2 yrs. beans & 1 yr. wheat 0.38 3 yrs. beans & 1 yr. wheat 0.43 4 yrs. beans 6 1 yr. wheat 0.47 5 yrs. beans & 1 yr. wheat 0.49 Altalta seed production (Rows) - includes year ot 0.41 establishment 5 yrs. alfalfa 6 grass - includes year of establishment 0.23 (Pasture & Hayland) 1 yr. fallow 2 yrs. beans Grass seed production (Rows) - includes year ot 0.21 establishment -12- Oo .i o .i ,i ,i a+ F 0 N 4+ 130'0 6 CT N .-1 .O 1/1 In CO n in in N N O CO O t1 C 1 CO O. .4 O N d M 1 1 1 1n N Mel N at d at o .43a w o M 0 0 a+ C) .r C) P. .4 .i 4 00 C CO N C) C o 01 C) CO om d t++ Hill CA ea • g NCI .On Of` N O t.1 199.. CA el Nn C9 . O V1 C'1 ...19 �• P'1 -.19 in R1 CA• N t'1 C'1 . • • • • 0 C7 U a in 0 F a d rn 0 a W a7 N CO •O in in to in d 0 o -4 v in in c.) v W o d in 14 tz) 04,.7 O 0)W F . d N Z a ri rn 04 in C 0 x u U c+4 f"1 N N �7 N CO 9.0 -s O •O 1 J �Y in .• in in A m W u C) of 0. 0 0 0 • i0 C) • 4+ 0 •i 4 C a+ 4 03 0-994 N CJ .01-1 H O N v0 'C a+ O a) N W 4 CO p. .1-1019a1 ) 0 C WC .�-1 C CO COW bO C 04) W CO CU 3 O4t 0 U N 3 N E CO 41 • +.+ 00 tC +-1 A co 0 0 .1 0 $4 0 0 •W rl CO O C r1 CO 6 C u 4 .4 ri 4 4 4 d .= 0 r4 C C 4 ,C C .1 4 0 0 al W w .i CI. C) CO a) C) 00 m tU P. cla 03 4 ,C 4 CO 00 U .p1 4+ 00 C +U m C) 0 C N 4 0 .W-1 a 0 •i C0C�JUCOJ UO PO. CO m to VOOF33cn P4. ¢ 0 -13- TABLE 6 "C" Factors for Permanent Pasture and Rangeland 1/ Vegetative Canopy Cover that contacts the Surface Type and Height Canopy of Raised Canopy 2/ Cover 3/ Type 4/ Percent Ground Cover 0 20 40 60 80 95-100 Column No. : 2 3 4 5 6 7 8 9 No appreciable canopy G .45 .20 .10 .042 .013 .003 W .45 .24 .15 .090 .043 .011 Canopy of tall forbs 25 G .36 .17 .09 .038 .012 .003 or short brush W .36 .20 .13 .082 .041 .011 (0.5 m fall ht.) 50 G .26 .13 .07 .035 .012 .003 W .26 .16 .11 .075 .039 .011 75 G .17 .10 .06 .031 .011 .003 W .17 .12 .07 .067 .038 .011 Appreciable brush 25 G .40 .18 .09 .040 .013 .003 or brushes W .40 .22 .14 .085 .042 .011 (2 m fall ht.) 50 G .34 .16 .085 .038 .012 .003 W .34 .19 .13 .081 .041 .011 75 G .28 .14 .08 .036 .012 .003 W .28 .17 .12 .077 .040 .011 Trees but no appre- 25 G .42 .19 .10 .041 .013 .003 ciable low brush W .42 .23 .14 .087 .042 .011 (4 m fall ht.) 50 0 .39 .18 .09 .040 .013 .003 W .39 .21 .14 .085 .042 .011 75 G .36 .17 .09 .039 .012 .003 W .36 .20 .13 .083 .041 .011 1/ All values shown assume: (1) random distribution of mulch or vegetation, and (2) mulch of appreciable depth where it exists. 2/ Average fall height of waterdrops from canopy to soil surface: m = meters. 3/ Portion of total-area surface that would be hidden from view by canopy in a vertical projection, (a bird's-eye view). 4/ G: Cover at surface is grass, grasslike plants, decaying compacted duff, or litter. W: Cover at surface is mostly broadleaf herbaceous plants (as weeds with little lateral-root network near the surface, and/or undecayed residue.) -14- TABLE 7 Factor "C" for Various Quantities of Mulch Mulch - adequately crimped into soil "C" Factor bare areas 1.0 1/4 ton straw mulch per acre .52 1/2 " .35 3/4 .. .. .. .. .. .24 1 .18 • 1-1/2" .10 2 .06 3 .. .. .. .. .. .03 4 .. .. .. .. .. .02 TABLE 8 "C" Factors for Woodland 1/ 2/ 3/ Tree Canopy Forest Litter % of Area % of Area Undergrowth Factor 100-75 100-90 Managed 4/ .001 Unmanaged 4/ .003-.011 70-40 85-75 Managed .022-.004 Unmanaged .01-.04 35-20 70-40 Managed .003-.009 Unmanaged 5/ 1/ When tree canopy is less than 20%, the area will be considered as grassland, or cropland for estimating soil loss. See Table 3, 5, or 6. 2/ Forest litter is assumed to be at least two inches deep over the percent ground surface area covered. 3/ Undergrowth is defined as shrubs, weeds, grasses, vines, etc. , on the surface area not protected by forest litter. Usually found under canopy openings. 4/ Managed - grazing and fires are controlled. Unmanaged - stands that are overgrazed or subjected to repeated burning. 5/ For unmanaged woodland with litter cover of less than 75%, C values should be derived by taking 0.7 of the appropriate values in Table 8. The factor of 0.7 adjusts for the much higher soil organic matter on permanent woodland. -15- TABLE 9 "P" FACTORS FOR CONSERVATION PRACTICES Up & Cross Slope Cross Slope Contour Slope Down Farming Contour Farming with Strip (Percent) Hill Without Strips Farming Strips Cropping 2.0- 7.0 1.0 0.85 0.50 0.37 0.25 7.1-12.0 1.0 0.88 0.60 0.45 0.30 12.1-18.0 1.0 0.92 0.80 0.60 0.40 18.1-24.0 1.0 0.97 0.90 0.67 0.45 1/ Contour Limits - 2 percent 400 feet, 8 percent 200 feet, 10 percent 100 feet, 14-25 percent 60 feet. SECTION IV Predicting Soil Loss Through Erosion From Thaw and Snowmelt Considerable erosion occurs at higher elevations where the soil is covered by snow during the early spring. During that period of spring where the snow melts during the daytime and freezes during the nighttime or through periods of intermittent storms or cool temperatures, a form of erosion occurs that is not covered by the standard rainfall erosion index. The typical method of charting the rainfall distribution curves would not account for peak losses in early spring because as the winter progresses, the soil becomes increasingly more erodible as the soil moisture profile is being filled, the surface structure is being broken down by repeated freezing and thawing, and puddling and surface sealing are taking place. In the absence of needed research on this type of erosion, we can still use the Universal Soil Loss Equation by modifying the factor R to compensate for this additional loss. Experience has shown that an estimate of R can be obtained by taking 1.5 times the local December-through-March precipitation, • measured as inches of water. For example, Meeker, Colorado with an R of 30 and a December-through-March precipitation of 4.5 inches would have an estimated annual R of 1.5 (4.5) + 30 or a new R factor of 36.75. SECTION V Use of USLE on Construction Sites In general, the USLE works the same on construction sites as it does on agricultural land. However, many of the factors will have to be modified to reflect changes caused by the disturbance of the soil and shorter duration of the construction project. -16- Since many construction sites are not exposed for the full year, R factors have been broken down into monthly increments in Tables 9 and 10. When computing soil loss for only part of the year, the R values for each month concerned are added together and this total is the R value for the construction period. The K factor can also be modified where all the topsoil is removed and stockpiled, the K factor for the subsoil should be substituted. For instance, a subdivision being developed on Colby sandy loam where the K factor is .28 has the top foot of soil removed. It would then become Colby silt loam with a K of .37. The LS factor would be determined in the usual manner. Construction site preparation that removes all vegetation and also the root zone would have a C factor of 1.0. For C values of varying degrees of cover or mulch see Tables 7 and 8. Values for p would normally be 1.0, the same as for up and down hill farming unless some temporary conservation measures are taken. TABLE 10 ANNUAL DISTRIBUTION OF EROSION INDEX IN WESTERN COLORADO Percent R Factor Rain 20 40 50 60 January 1 .2 .4 .5 .6 February 1 .2 .4 .5 .6 March 3 .6 1.2 1.5 1.8 April 5 1.0 2.0 2.5 3.0 May 15 3.0 6.0 7.5 9.0 June 35 7.0 14.0 17.5 21.0 July 18 3.6 7.2 9.0 10.8 August 8 1 .6 3.2 4.0 4.8 September 8 1.6 3.2 4.0 4.8 October 5 1 .0 2.0 2.5 3.0 November 1 .2 .4 .5 .6 December 0 - - - - 20 40 50 60 -17- TABLE 11 ANNUAL DISTRIBUTION OF EROSION INDEX IN EASTERN COLORADO Percent R Factor Rain 30 40 50 60 70 80 90 100 January 0 - - - - - - - - February 0 - - - - - - - - March 1 .3 .4 .5 .6 .7 .8 .9 1.0 April 6 1.8 2.4 3.0 3.6 4.2 4.8 5.4 6.0 May 15 4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0 June 30 9.0 12.0 15.0 18.0 21.0 24.0 27.0 30.0 July 20 6.0 9.0 10.0 12.0 14.0 16.0 18.0 20.0 August 15 4.5 6.0 7.5 9.0 10.5 12.0 13.5 15.0 September 6 1.8 2.4 3.0 3.6 4.2 4.8 5.4 6.0 October 4 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 November 2 .6 .8 1.0 1.2 1.4 1.6 1.8 2.0 December 1 .3 .4 .5 .6 .7 .8 .9 1.0 SECTION VI Determining Soil Loss from Other Types of Erosion The soil loss from concentrated flow, gullies and other similar types of erosion will be determined by calculating the annual volume of soil removed from the eroded area. The annual tons of soil loss can then be determined by multiplying volume by unit weight of the soil. If the time period of the erosion exceeds 1 year, the quantity should be divided by the number of years the gully has existed to get an annual rate. The following table provides a guide for approximate unit weight of various soils. APPROXIMATE UNIT WEIGHT DRY DENSITY SOIL TEXTURAL CLASS Lbs./Ft.3 Clay 70- 95 Silty Clay, Silty Clay Loam 75-100 Sandy Clay, Loam, Sandy Loam 80-105 Clay Loam, Silt, Silt Loam 85-100 Sandy Clay Loam, Loamy Sands, Sands 95-110 Example 1: A channel has formed in a field in the past two years that is one foot deep , 10 feet wide at the top and two feet wide at the bottom, 600 feet long. -18- Using the formula: • Bulk Density Depth x Top Width + Bottom Width x Length x of Soil x 1 Year 2 2000# 2 Yrs. Annual Soil Loss in Tons/Year or: 10+2 80 1 x2 x 600 x 2000# x 2 - 72 tons/year Example 2: On steep rangeland, a gully is advancing uphill at the rate of 5 feet per year. The head of the gully is 6 feet deep, 30 feet top and a 6 foot bottom width. Using the same formula, we have: 6 x 30+6 x 5 x 200011 x 1 - 24.3 T/yr. 2Clues for Recognizing Active Geologic, Gully, Roadside or Bank Erosion o banks are relatively free of any vegetation. o obvious washouts and bank sluffing. o overhangs at the top of bank held together by tree roots or other vegetation. o fence posts are eroded out of the ground. o excessive scouring of the gully bottom. o excessive deposition on level or flat sections of gullies. o color change in soil on exposed banks. o compare recent aerial photography with previous work. -19- _ 11 > N ca I :r_ r-_ i - -� I !I'1 .4_1. �� N to CD ob CA t I ' 1 1 i• 1• O l �Liul s'tt! ! t Y 1 w '-----.! • gi IF : I ''r- _ . :i I, 1 r �, r ��_ . C • 44 D R FS �� ., v i . ' ' :IN, • fCfl . - T' 1 ` IA �j �/ 1 N T O 1 • \% : I •- rRII /• t Vei I . , _ti 1 TSL LIThL 71$. __ • :• 0.1 Cr) -20_ Erosion Index Distribution Curve for Computing Factor "R" for Less than 12 Months FIGURE 2 100_ ■■.lu■■■■.n.a.Iua.n!a - M■■ ■■E■ x 0 80 IIIIIIIIIIIIIIIIIIIIIIIIIIIII IM z H Z Fy - 0 60 w J Q 40 IIMIIIIIIIIIIIII w Western 34 thru 51 IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII Colorado iM r- w , a p r .. .- 2/1 3/1 4/1 5/1 6/1 7/1 8/1 9/1 10/1 11/1 12/1 1/1 DATE 100 I ........... w o 1 Z _ . . I I • 80 Z 4:- o I w 60 f J S Q D Z r Z 40 , ti. -7`l EASTERN• MLRA 67 thru 77 o �1 COLORADO Iz- I / I I w 20 L3 ;— - - .-•---•- i • a La -t- a _,,,..CL _ __._ ' 0 .. r... I/I 2/I 3/I 4/I 5/I 6/I 7/I 8/I 9/I 10/I I I/I 12/I I/I DATE -21- \ \ •\• • • • 4 4 e • \ W \ \ E J\ \Q \ \ \ Q •• • •- • \ VP* \ \ \ W - e v \ \ \ \ \ 4 .. • , e v - \ \ \ \ - E E \ \ \ N SI f A N - ix W•\\\ \ \ D \\ \ \ \ o E — \ .\__ ).. ......... ..\.. \ \ C. '♦ \ a a cn \ • v \ \ \ • is a •\ •\ \ \ •\ I :. E a \ \\ \ \ \ W Z 1 aAi ,....I.... .a. . I I I . I `-- } \ P.* 0 w0 0 O O in N O 0 o x F !0 NolivwixonddV MaiA.140.1.3134 AiIlIBI00d3-IIOS E f o O U rO 0 O ¢ N O O O O Z- a [.. "y..l... I \. -1 I I f --I - i • /. Y .i.. O o A\ \ C I a ink up H \ \\ NU1 / // .....�2 I H �� M / f cl « MCC W \ \ O / � /// gym O C1 O \ 4k\h kil t' \ ' // / ///, ` i E r c > / //// I— •O 7 ` F /// U O ` E 8 i O ID/ / /\ / W O . 2 [ //c////,,/,/ / / / _ lois iO O N M tt 0 tD O� m g 1 O GNVS 3NId Ael3A+111S IN30tJ3d -22- 62-6 'L(-!C_�/./ tete) X/cd mac,.-ct( &-Ce jt 'le th tc-01i c_ ( ,0, XL•Ci ' Csy(�ac/d/c ey—9,1 t Zee- _c-ee fje alefifiet tL,4, / --c'—t fit/cc-4 tali-1/6,‘� _�.tQc etc _14 z i� (2� �v �� ert-)r 4A— 1/72 r.,.ec ent et-ft-do—Hi .€17C,.)&t:Lct 4 f 1 ee4,777 _2K �� Ae/a „tire-71 e eye j n---ke-• --e Arl 2 _etc, .t'< .t ie-t,-0 it f�.' TECHNICAL NOTES U.S.DEPARTMENT OF AGRICULTURE Colorado SOIL CONSERVATION SERVICE July 1933 AGRONOMY NOTE No. 56 (Revision 3) K �� To: All Offices From: Carrol E. Ramon, State Conservation Agronomist Re: Determining Capability Class of Soils This note supersedes and revises Agronomy Note No. 56 dated May 15, 1979. Capability classification is a system for interpreting suitability of soils for agricultural uses based on the probable interactions between the kinds of soils and alternative systems of management. Soils grouped within a capability class should be similar with respect to degree of limitations for various agricultural uses, or hazards to the soil when so used. Soils within a capability class grouping may, however, have varied characteristics and require unlike management. For example, two Class IV soils may both have severe limitations for use as cropland, but one may be limited by low water-holding capacity, while the other may be limited by slow permeability. Two Class VI soils may be unsuited for cropland, one having a severe water erosion hazard; the other having insufficient rainfall. Soils within a capability class grouping may be further separated into capability subclasses according to kinds of limitations. In turn, sub- classes may be separated into capability units. A capability unit is a grouping of soils that are nearly alike in suitability for plant growth and responses to the same kind of soil management. A complete explanation of land capability classification is contained in Agricultural Handbook No. 210, SCS, USDA, 1961, reprinted 1973. The attached guide is a tool to be used for placement of soils into capa- bility classes. The guide consists of two charts: one based on soil properties; the other based on climatic limitations. Information neces- sary for use of the guide is contained in Figure 1, "Erodibility Index Table"; Figure 2, "Climatic Factor Map"; Figure 3, " 'R' Factor Map"; and Figure 4, "General Moisture Zone Map." The moisture zone map is a general map. Field office maps should be developed, as necessary, to show appropriate adjustments in zone boundaries and islands of different local moisture zones. Local climatic data, production records, soil characteristics, climax vegetation, and knowledge provided by reliable people may be used as the basis for developing field office maps. Example Situation A conservation planner at Lamar wants to determine the capability clas- sification of Colby silt loam in Prowers County, Colorado. Step 1: Refer to soil description and tables, Soils-5, soil erodi- bility table, "C" factor map, and "R" factor map to deter- mine needed soil properties. Step 2: Determine the climatic limitations from the moisture zone map. Step 3: Enter the chart under climatic limitations. The moisture zone is 4 and the growing season is 167 days. Therefore, the capability class will be no better than IV. Step 4: Enter the chart under soil properties limitations. (1) Minimum rooting depty - 60 inches, Class I (2) Surface texture - SICL, Class I (3) Coarse fragments - 0%, Class I (4) Maximum slope - 3%, Class II (5) Minimum permeability at 0- to 60-inch depth is .6 inches per hour. Therefore, from the standpoint of texture, the capability class would be Class I. (6) Minimum water capacity to 12-inch depth is 2.4 inches (.2 X 12") . Capacity of the soil to 60 inches is 10.2 inches (.17 X 60") . Capability class could be class I. (7) Minimum drainage class - 6.0 feet, Class I (8) No flood hazard - Class I (9) Maximum salinity, none - Class I (10) Maximum erosion hazard from water is 3.3 (.37 X 9 X 1.00) . Maximum erosion hazard from wind is 86 (86 X 1.00) . Therefore, maximum capability is Class III. Based on the information compiled, the best capability class from the standpoint of soil properties is Class III. The best capability class because of climatic limitations is Class IV. Therefore, the maximum capability class for Colby silt loam (3% slope) is Class IV. -2- - r - S > 1 'Le vl > . ii• C o _ O CO > .. rg 3_ _ 0" 44a lc - > I r.- t., '• •0 o< c`. i > p — — .. > e < w >.-N a A .. > ,.( N Al V' 'O I� • nauo$ aanlszow o nl co 4 Al 1 U C C +, I. c x o 0 a a c c c G N 0 41 y Y.Y «Le. < < < (0 .r( -� 12 '- "y? mN C a I II '-I a o r I-I C a -i 43 ° "c re C-41 u n Z Ym t' c c U W W 41 4.3 G • eN' .. « N>O N < < < • i .cO .c 3ro 0 6: >, > .• e 1.2 e e.°-o « a m om. a - <° < C ri 3 II II CO L • w w ma.c .rj C O a ri ro %-a_ d_ N 1 > oy `AIJro w0H • • m 3 a r N N W A e m ` SNv < H W G 34 to ^ - - - - m 0) -'-I N ).4 C c oy , •c, • o - o o •c • • N dP X 0 .G 00 .r1 .Liu % a " > 2 a V U Y •to v Y 0 y( •I CO 0 In nl 04 3 Al 0) AI • s S >.. 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I : ' ^— '' r..1_,.F1 i `o • JCC ______\____I - cp E -- -�' 1 .m \ v - of / I H -et •a I W a p eft. ., t �--1 Fa % Y I. '1 LiI �.?' t 14 v "' 1 s t 1 do•I.../ —...---Cr I w • h▪ r' .�' ; r l I ? ≥.v - /, I a n a y I N I- L .t _ �'..' -_t— r If' N z lzra) o i 1 —= z 2 • I M• a ��• I ; y ' o fa Ia r r I - *� • ,'� ill I � � p I N ' L j ! • - ~- s m I ! S - 'I 1 Ito m ' • O I N • - -1 M: IN M : I .� • t' ' • 1 ®1Y o ei I N '� J geY u 11 V 1 '1 "' ?'1 1 ✓ m w < COLORADO WIND EROS/ON GU/DE =�� (I ) \a,,.... AGRON W lECHNICAL NOTE 53 Revision February 1983 (4% 'cir _ \ •� „lett _ ........• rl Il11i f,, /• lii,,r� n„,4,,,,,,„ „.„;j NI \n��'/ \ , ��\ V /�� United States \ at Department of \\ \• `% \�•� \ ` � Agriculture \N" ..'A •' , vV � .mj Soil Conservation \ \ \� Service - �' \' . / �j // Denver, �� ' Colorado PREFACE To The Users of This Guide: Wind erosion has long been a major source of soil Loss in Colorado. It is not enough; however, to identify it and try to develop programs and practices to prevent it. We must be able to quantify it to some degree of accuracy to effectively solve the problem. This guide is a very simple compilation of material resulting from years of research by engineering and soil scientists. By becoming familiar with all the factors in the equation and how they interact to predict soil loss quantitatively, the user can become very profi- cient in predicting soil loss by wind erosion. I urge each of you to actively practice this procedure and become experienced in its use. Predicting soil loss from all sources and all land uses will become even more important to us in the future. Ste / heldon G. Boone State Conservationist Colorado USDA Soil Conservation Service • TECHNICAL NOTES U.S.DEPARTMENT OF AGRICULTURE STATE or COLORADO SOIL CONSERVATIONSFRVICF February 1983 AGRONOMY NOTE #53 (revision #1) TO: All Offices From: Carrol E. Hamon, State Conservation Agronomist GUIDE FOR PREDICTING SOIL LOSS BY WIND EROSION IN COLORADO This guide is based on research by Federal and State agencies on the cause and control of wind erosion in the great plains. The fundamental research resulted in the development of a wind erosion equation which is the basis of this document. The mathematical relationships among the following variables are complicated. However, these parameters have been computed and developed into tables and curves for convenient field use in developing and evaluating conservation practices. A brief explanation of the factors involved in developing these charts and tables should be helpful in your understanding of the principles of wind erosion control. It should be understood that common sense, good judgment and professionalism are necessary in order to properly use the information contained in this document. 1. An Explanation of the Equation The wind erosion equation E = f(IKCLV) is used to estimate soil loss by wind erosion. E = the predicted average annual soil loss expressed in tons per year. f = a function of. I = the soil erodibility. It is expressed as the average annual soil loss per acre that would occur from an "isolated" , "level", "smooth" , "unsheltered" , "wide", and "bare" field with a noncrusted surface at Garden City, Kansas, where the climatic factor is 100 percent. (See Table 1) M-4335 uswaes-susrun,ems. um K = the soil ridge roughness factor. A field is considered eitheF smooth or ridged. Drills with chisel openers leave the soil in a ridged condition. Disc openers do not ordinarily provide a desirable ridge roughness effect, (See Table 2) C = the climatic factor. This factor, is based on the average wind velocity and on the precipitation-evaporation index for that location based on official weather records. (See Figure 1) L = the unsheltered distance across a field along the prevailing wind erosion direction. The unsheltered area of a field begins at a distance leeward from the barrier, of 10 times the effective height of the barrier, parallel to the prevailing wind direction. If there is no protective barrier within this distance of the field edge, then the unsheltered :distance begins at a point to the windward of the field. 'L' is not actual but rather is an equivalent distance. (See Page 5) V = the vegetative cover. This value combines three conditions: (1) the quantity of residue; (2) the kind of residue; and (3) the orientation of the residue. The 'V' value is expressed as equivalent flat small grain residue. (See Page 7 for Method of Determining Amount of Residue) T = the soil loss tolerances. It is expressed as the maximum acceptable annual soil loss in tons per acre per year. The first responsibility is to protect the soil. However, the landowner should be encouraged to also ;protect the crop from damage. SOIL ERODIBILITY (I) (See Table 1) -2- TABLE 1 Wind Erodibility Groups (WEG) Dry Soil Wind Aggregates Erodibility Predominant Soil Texture Over 0.84 mm Index (I) WEG Class of Surface Layer Percent T/Ac/Yr 1 Very fine sand, fine sand, sand, or coarse 1 310 1/ sand 250 220 180 160 2 Loamy very fine sand, loamy fine sand, loamy 10 134 sand, loamy coarse sand 3 Very fine sandy loam, fine sandy loam, sandy 25 86 loam, or coarse sandy loam 4 Clay, silty clay, noncalcareous clay loam, or 25 86 silty clay loam with more than 35 percent clay content 4L Calcareous loam and silt loam, or calcareous 25 86 clay loam and silty clay loam 5 Noncalcareous loam and silt loam with less 40 56 than 20 percent clay content, or sandy clay , loam, sandy clay 6 Noncalcareous loam and silt loam with more 45 48 than 20 percent clay content, or calcareous clay loam with less than 35 percent clay content 7 Silt, noncalcareous silty clay loam with 50 38 than 35 percent clay content 8 Soils not suitable for cultivation due to — -- coarse fragments or wetness, wind erosion not a problem 1/ The "I" factors for WEG 1 will vary from 160 from the coarse sands to 310 for the very fine sands. Use an I of 220 as an average figure. Use common sense in selecting the factor. If you have a coarse sand with gravel, use a low figure. If you have no gravel and very fine sand, use a higher figure. -3- N in N 4.0 in N a in in in in • a a O 0O N N N N N N N 'N. in N N N N 11 a .- r- in in in u 1n in 0 ,n on on in O1 in O in N N N N N I1 N an YS F N N N :O .- in• ,- N on in N in in in in an a o o d N N N N N N N a in N N N p 0 a .- - —_ N a in In in in in a in N O O 0 'N N N N N N a in N N N N 0 0 v in in in in N N in N i o O o N N N N N N In a N N N 0 0 0 O O O in 0 n n n n in in in in n T n O O O ✓ W on in o) in N ^r N. N N V ♦ O - 0 0 N N N N N an in in N N N O O a a I. 2 r., --•-• _ W to L • O U�,, 0 0 N N N N N in a N N N 0 0 0 0 O- .p• = • r-.Cu W 11 in in on in of in in an C 4} O, 0 N N N N N 'in an N N N O a 0 O' a a 0 CO • ^ GN. . . .. . . . . . .. . . . . JIn in in In in N 1n N ya_. 0 N N N N N" N ,N N N t 0 0 0 0 O O %- II,In N N N N OOOOO • In In In In N in 1n Yfa O N N N N In ' N N N N 0 0 0 0 O 0 O.- -V In In in in ,In In YN N N In N N N NO O 0 O O O O O .5- 0 0 NrI. . .. . . . .. . . .. . . . . .- -�- 1. mN N N N N N dS o N N N N N N 1� o O o O O O O o O L .a 2 010 -CN N N O O O O O 0 O O O O O OdLN N •N N N N O O O O O O O O O O O O L6OM W N N NO O O O O O O O O O O O O@ow N NN N el y.� I-O .- - Cu N 01 4 C 41 N N t0 'N OJ O, O^ 7- N say3ul '346}aH a6p}a —4— UNSHELTERED DISTANCE (L) The unsheltered distance is considered to be a field surface unbroken by a natural or man made barrier such as a windbreak, road, adequate vegetation or natural terrain where deposition begins. When the prevailing wind direction across a field or strip is at a significant angle, the width of unsheltered area should be calculated using Figure 2. For example, assume a prevailing wind direction of W 30° N (angel of deviation from the 30° point on the right scale and connect with the 660 foot point on the center scale. Read the hand scale which indicates the prevailing wind is blowing acorn an unsheltered distance of 763 feet. If the direction deviates from the perpendicular less than 30° the additional distance is considered insignificant. 4000- -4000 0 -3000 E S000- - SO . -.2000 35 E --moo- 71500 1 a 1300 ice' t 20 a 45 g a 1000 J u 1700- w i a W -ADD i s 2 s - 400 - a 11000- - - -000 � u00 o •1 -� _400 a W zoo y- a a -300 s I is C1 S00_ W 1 a W 200 aa 3 soo- a 1 E Zr • -130 70 a is 400- O s: p a • a - 100o a m 300• a - 50 a O a J W - TS a -m0 a s. -30 W a 200- E a -s0 a on a 5 F. a ISO o - 30 = a W ; - J a ` .2o so 100- ; : 13 u IS WO- ea _• w a • so- - a s . a b so- :s 40- - 4 30-) 3 -5- 41t .....-...-t •\\:‘,........... I 1_ 077\ S..E _. 3 5 (J E _ Y ,E o C — w O Y K V O I a - 4 •a• e E s r q gg 7 i V - 4 r€ a — t s r s N 8 L S \%........./ 2 b i e..` Y 3 # LL_ L A s s s s -6- EXAMPLE #1 A farmer at Genoa, Colorado wants to reduce his wind erosion soil loss to within the soil loss tolerances. He has a wheat-fallow operation and his soil is predominantly a silt loam with a soil loss tolerance of 5 tons per acre per year: Site specific information: a. "C" factor = 80 (figure 1) b. "I" factor = 56 (table 1) c. "K" roughness factor = .5 (deep furrow drill) d. "L" unsheltered distance = 3000 lineal feet From Page 83 (soil loss charts) with the above information the technician can determine that the farmer must have the equivalent flat small grain of 1000 lbs. after planting which would reduce his soil loss from wind erosion to 3.6 tons per acre per year. METHODS OF MEASURING AMOUNTS OF RESIDUE PER ACRE Residue measurements are required to estimate soil losses by wind: determine amounts of residue needed to control erosion; and evaluate the effectiveness of crop residue for conservation practices. Field methods for estimating amounts of crop residues on the surface are by ocular estimations and collecting and weighing clean residue from prescribed areas. Experienced personnel can obtain reasonably accurate results by using the ocular methods, but until they become experienced they should use the collecting and weighing method. The collecting and weighing of crop residue samples is more accurate than the visual methods. All residue samples, however, must (1) be cut at ground level, (2) have all loose soil thoroughly washed or shaken out and, (3) be air-dry. It is necessary in planning a residue management program that measurements or reliable estimates be made of amounts of residue after harvest or before tillage begins. The following methods may be used in collecting and weighing residue samples: 1. For small grain stubble and by random sampling using a clipping frame of one of the surface areas listed below convert grams of air-dry residue to pounds per acre. on 1.92 sq. ft. plots, multiply grams by 50 on 2.40 sq. ft. plots, multiply grams by 40 on 4.80 sq. ft. plots, multiply grams by 20 on 9.60 sq. ft. plots, multiply grams by 10 on 96.0 sq. ft. plots, multiply grams by 1 2. For row crop residue clip vegetation at the surface for the prescribed row length and multiply its weight by the appropriate constant. The results are in pounds of residue per acre: Row GRAM SCALE OUNCE SCALE Spacing Row Feet Row Length Row Length Inches Per Acre (feet) Constant (feet) Constant 28 18,695 4.1 10 11.7 100 30 17,424 3.9 10 10.9 100 32 16,315 3.6 10 10.2 100 34 15,392 3.4 10 9.6 100 36 14,520 3.2 10 9.1 100 38 13,754 3.0 10 8.6 100 40 13,081 2.9 10 8.2 100 42 12,445 2.8 10 7.8 100 3. Growing small grain also has a significant affect on the potential for erosion control from wind. The pounds of new small grain above the ground surface can be converted to flat small grain equivalent by use of one of the conversion charts found in the back of this technical note. -8- CONVERSION CHARTS FOR OTHER RESIDUES TO FLAT SMALL GRAIN EQUIVALENTS When residues other than flat small grain are encountered, they must be converted to flat small grain equivalents before entering the soil loss charts with the factor "V". For example, a technician is considering the soil loss from wind erosion on an overgrazed rangeland site consisting predominantly of Blue Grama. A representative sample is clipped and air-dried, which results in a yield of 40011/acre. On the conversion chart on page 11, enter the horizontal axis and find 40011, move vertically on this line until it intersects the line for Blue Grama 1", move laterally to the vertical axis and read 260011 for the flat small grain equivalent. -9- -10- m O O O tsl‘j 1 1 I p c 2 ` U ` N ♦ — O C N. ♦ a, O ♦ m Ia a ♦ a c c n ` n n E a ♦ 0 m . ♦ o a o ♦ d a E (G_♦ a . u co . v• - a m .o - — JGS�S _ O -c 0 . — �e�/ a r N MI E G/A� y —76 m w w 4444% E = m - s-9— d mm _ Q. 4 4% o as 0 c c se o a 0 C .- 4'9 m o ao N N — 4' e/,f/� — Ycc S a c m0) " yo . 8 > t — {,l rn u.•- w — ��P S— m A o$ J .� !G � > E or — gib. O a m', 9 C t, d 0'3 Q C5 N — ' — r 02 o o m To' J pa a a Etc" °EN N C W O V 0 4 In 0 O 0 0 C o m +,. 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''6 N. \ d L ♦ T 0 a S4> ♦ E o a O \ o a; o f N `p m v�SS 7 y c' N P�6 4` n s m Q ,3 of a y v Se n c E > OM iSa � - g m .7 `` 2/ co y. gi - Q IM W SSP > t'o c de O Thu 0 E Pilo ;¢ N 8 ° o� N c' m W odm E $' O U N J tn y N O O O - .O +" .� 0 O d x & 61 5 p , d co 0 it IL CO Q0N (aiDe Jad 'sq ) anpisai uieJ6 Hews lel luaIeninb3 —13— w O co a V O A0 o 0 No .m ' \j .- ' O 3 o ia \NIL U O C N ` m E y n CO 43 3 'day O a N 1•�0 v 0 y 6 a C1 //�o sz 04, ' "IC)ti V xel Ai, m CC 15:0c cbv '6 elk 1 CO H co 0012 � 0, de 0, �0,� CO CO N 600/9 ° 04 , 09 � co c w a 9� app ° "%II a, = M T G,0�sg00,i pe� //04i 03 E m 04 y�o a{0 s"cb . 0 A 7 a c e / d ms °'o, -i, o o� O X60/0 0- op CO d a ser 6 m y 9, ,6 9 = 9 0 m o a °s�000 p/9 'c o .a �A�i(/GJ 49 M.`r C _ Oj 0o 0-II a v w 13 �.3a a 0°_ OON E. E TO of o m m d T O NU'C U) o 0 O cod 2 r 0 00 o v en x 9 Acp m O O . 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MEM .90 ME �.� Cis ■I.... 111if■i PJe,A . a a 111IUR IIIIIU11 Q, 05 To' NY de,. y N . d0 E I ♦ g 33 10 V 0 0 o.- .0 0 N .. 0 O O CO 0 O N iL LL o �ee (woe Jed sql) anpisai uiei5 Hews ley lualeninb3 -25- -26- SOIL LOSS CHARTS -27- -28- 1614 SOIL LOSS FROM WIND EROSICN IN TCNS PER ACRE PER YEAR JANUARY.1961 C . 20 SURFACE - K • 1.0 I • 310 ILI (VI** - FLAT SMALL GRAIN RESIDUE IN PCUNOS PER ACRE UNSHELTERED DISTANCE 0 250 5CC 150 1000 1250 1500 1750 2000 2250 2500 2750 3C00 16 FEET !0000 62.0 53.6 42.1 30.8 18.9 9.5 4.6 2.2 1.3 8000 f2.C 53.6 42.1 30.8 18.9 5.5 4.6 2.2 1.3 6000 62.0 53.6 42.1 30.8 18.9 5.5 4.6 2.2 1.3 4000 62.C 53.6 42.1 30.8 18.9 9.5 4.6 2.2 1.3 3000 62.0 53.6 42.1 30.8 18.9 9.5 4.6 2.2 !.3 2000 62.C 53.6 42.1 30.8 18.9 9.5 4.6 2.2 1.3 1000 62.0 53.6 42.1 30.6 18.9 9.5 4.6 2.2 1.3 800 62.0 53.6 42.1 30.8 18.9 5.5 4.6 2.2 1.3 600 62.C 53.6 42.1 30.8 18.9 9.5 4.6 2.2 1.3 400 62.0 53.6 42.1 30.8 18.9 5.5 4.6 2.2 1.3 300 60.7 52.4 41.1 30.1 18.3 9.2 4.4 2.1 1.2 200 57.8 49.8 38.9 28.2 17.1 8.5 4.0 1.9 1.1 150 55.0 47.3 36.8 26.6 15.9 7.8 3.6 1.7 1.0 100 52.2 44.8 34.7 24.9 14.8 7.1 3.3 1.5 0.8 80 49.4 42.3 32.6 23.2 13.7 6.5 2.9 1.3 0.6 60 44.6 38.0 29.1 20.5 11.9 5.4 2.4 1.0 0.5 50 41.2 35.1 26.6 18.5 10.6 4.7 2.1 C.9 C.4 40 38.3 32.5 24.5 16.9 9.6 4.2 1.8 0.6 30 33.1 27.5 20.8 14.1 7.8 3.3 1.3 0.4 20 25.6 21.4 15.6 10.3 5.4 2.! 0.8 10 15:5 13.0 9.1 5.6 2.6 C.9 1614 SOIL LOSS FROM WIND EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 SOIF ICE - K p.l C C . 20 ILI (Y144 - FLIT SMALL GRAIN RESIDUE IN POUNDS PEP ACRE I 310 UNSHELTERED - DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 43.4 37.0 28.2 15.8 11.4 5.2 2.3 1.0 0.4 8000 43.4 37.0 28.2 19.8 11.4 5.2 2.3 1.0 0.4 6000 43.4 37.0 28.2 19.8 11.4 5.2 2.3 1.0 0.4 4000 43.4 37.0 28.2 19.8 11.4 5.2 2.3 1.0 0.4 3000 43.4 37.C 28.2 19.8 11.4 5.2 2.3 1.0 0.4 2000 43.4 37.0 28.2 19.8 11.4 5.2 2.3 1.0 C.4 1000 43.4 37.0 28.2 19.8 11.4 5.2 2.3 1.0 0.4 600 43.2 36.8 28.0 19.6 11.3 5.1 2.2 1.0 0.4 600 41.2 35.0 26.6 18.5 10.6 4.7 2.0 0.5 0.4 400 39.2 33.2 25.1 17.4 9.9 4.3 1.9 0.8 0.4 300 37.4 31.7 23.9 16.4 5.2 4.0 1.7 0.6 200 33.7 28.5 21.3 14.4 8.0 3.4 1.4 0.5 150 30.6 25.7 19.1 12.8 7.0 2.8 1.1 C.4 100 27.0 22.6 16.6 10.9 5.8 2.3 0.9 60 24.0 20.0 14.6 5.5 5.0 1.5 0.7 60 20.6 17.1 12.2 7.8 4.0 1.4 0.5 S0 18.3 15.1 IC.7 6.7 3.4 1.2 40 16.0 13.1 9.2 5.7 2.8 0.5 30 13.C 10.6 7.3 4.4 2.1 0.4 20 9.3 7.5 5.C 2.9 1.3 0.3 10 4.0 3.1 2.0 0.9 (E14 SOIL LOSS FROM WINO EROSION IN TCNS PER ACRE PER YEAR JANUARY.1981 C = 20 SURFACE - K • 0.5 1 310 ILI (limo - FLAT SMALL GRAIN RESIDUE IN PCUNDS PER ACRE UNSHELTERED . DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 31.0 26.1 19.3 13.0 7.1 2.9 1.2 0.4 8000 31.C 26.1 19.3 13.0 7.1 2.9 1.2 0.4 6000 31.0 26.1 19.3 13.0 7.1 2.9 1.2 C.4 4000 31.C 26.1 19.3 13.0 7.1 2.9 1.2 0.4 3000 31.0 26.1 19.3 13.0 7.1 2.9 1.2 0.4 2000 31.0 26.1 19.3 13.0 7.1 2.9 1.2 0.4 1000 29.6 24.8 18.3 12.3 6.7 2.7 1.1 800 28.3 23.7 17.5 11.6 6.2 2.5 1.0 600 26.5 22.2 16.2 10.7 5.7 2.2 0.9 400 23.9 19.9 14.4 9.4 4.9 1.9 0.7 300 22.1 18.4 13.3 8.5 4.4 1.6 0.6 200 18.7 15.5 11.0 6.9 3.5 1.2 150 15.8 13.0 9.1 5.6 2.8 0.9 100 13.6 11.0 7.7 4.6 2.2 0.7 80 11.8 9.6 6.6 3.9 1.8 0.4 60 9.4 7.6 5.1 3.0 1.3 0.3 50 7.9 6.3 4.2 2.4 0.9 40 6.3 5.0 3.2 1.8 0.7 30 4.4 3.5 2.2 1.1 0.4 20 2.6 2.2 1.3 0.6 10 1.2 C.9 0.5 • NOTE: SOIL LOSS FOP VALUES WHERE •E. IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NOT SHOWN; OTHER VALUES NOT SHCWN ARE INVALID *5 NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT •V. -29- (EIS SOIL LOSS FROM MIND EROSION IN TCNS PER ACRE PER TEAR JANUARY.19810 SURFACE -.M • 1.C I • 250 ILI 19144 - FLAT SM*I.L GRAIN RESIDUE IN POUNDS PEP ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IR FEET 10000 50.C 42.! 33.C 23.6 13.9 6.6 3.0 1.3 0.6 8000 50.0 42.8 33.0 23.6 13.9 6.6 3.0 1.3 0.6 2000 50.C 42.8 33.0 23.6 13.9 6.6 3.0 1.3 0.6 4000 50.0 42.8 33.0 23.6 13.9 6.6 3.0 1.3 0.6 3000 50.0 42.8 33.0 23.6 13.9 6.6 3.0 1.3 0.6 2000 50.0 42.8 33.0 23.6 13.9 6.6 3.0 1.3 0.f 1000 50.C 42.8 3!.C 23.6 13.9 6.6 3.0 1.3 0.6 800 50.0 42.8 33.C 23.6 13.9 6.6 3.0 1.3 0.6 600 50.C 42.8 33.0 23.6 13.9 6.6 3.0 1.3 0.6 400 48.1 41.1 31.6 22.5 13.2 6.2 2.8 1.2 0.5 300 46.2 39.4 30.2 21.3 12.4 5.7 2.6 1.1 0.5 200 42.3 36.C 27.4 19.1 11.0 4.9 2.2 0.9 0.4 150 38.7 32.9 24.8 17.2 9.7 4.3 1.8 C.8 0.3 100 35.6 30.1 22.6 15.4 8.6 3.7 1.5 0.5 80 32.8 27.7 20.6 14.0 7.1 3.2 1.3 0.4 60 28.5 23.9 11.6 11.7 6.3 2.5 1.0 50 24.5 26.8 15.2 9.9 5.2 2.0 0.8 40 22.6 18.8 13.6 8.8 4.6 1.7 0.6 30 18.1 15.4 11.0 6.9 3.5 1.2 20 13.9 11.4 7.5 4.8 2.3 0.7 10 7.1 5.6 3.7 2.1 0.8 1014 SOIL LOSS FROM MIND EROSION IN TONS PER ACRE PER YEAR JANUARY.I981 SURFACE - K • 0.7 I • 250 ILI IV)** - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 35.C 25.6 22.2 15.1 8.4 3.6 1.5 0.5 8000 35.0 29.6 22.2 15.1 8.4 3.6 1.5 C.5 2000 35.C 29.6 22.2 15.1 8.4 3.6 1.5 0.5 4000 35.0 29.6 22.2 15.1 8.4 3.6 1.5 0.5 3000 35.0 29.6 22.2 15.1 8.4 3.6 1.5 0.5 2000 35.G 25.6 22.2 15.1 8.4 3.6 1.5 0.5 1000 34.4 29.0 21.7 14.8 8.2 3.5 1.4 0.5 800 33.3 28.1 21.0 14.2 7.9 3.3 1.3 0.5 600 32.2 27.1 20.2 13.6 7.5 3.1 1.3 0.4 400 29.7 24.9 18.4 12.3 6.1 2.7 1.1 300 27.1 22.7 16.6 11.0 5.9 2.3 0.9 200 23.6 19.6 14.2 9.2 4.8 1.8 0.7 150 20.E 17.2 12.4 7.9 4.1 1.5 0.5 100 11.9 14.8 10.5 6.6 3.3 1.1 80 15.E 12.9 9.1 5.6 2.7 C.9 60 12.9 0 11.3 19.1 6.2 3.7 1.7 0.3 40 9.7 7.8 5.3 3.1 1.4 0.3 30 7.9 6.3 4.2 2.4 0.9 20 4.3 3.4 2.1 1.1 0.4 10 1.9 1.4 0.8 AEI• SOIL LOSS FROM MIND EROSION IN IONS PER ACRE PER YEAR JANUA`Y.1981 s 20 SURFACE - K • 0.5 I • 250 ILI IVlSI - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IR FEET 10000 25.C 2C.! 15.2 9.9 5.3 2.0 0.8 8000 25.0 20.8 15.2 9.9 5.3 1.C 0.8 6000 25.6 20.8 15.2 9.9 5.3 2.0 0.8 4000 25.0 20.8 15.2 9.9 5.3 2.0 0.8 3000 25.0 20.8 15.2 9.9 5.3 2.0 0.8 2000 24.7 2C.6 15.C 9.8 5.2 2.0 0.7 1000 23.0 19.1 13.9 9.0 4.7 1.7 0.6 800 22.1 18.3 13.2 8.5 4.4 1.6 0.6 600 20.3 16.8 12.C 7.6 3.9 1.4 0.5 400 17.8 14.7 10.4 6.5 3.3 1.1 300 15.6 13.0 5.1 5.6 2.8 C.9 200 13.3 10.9 7.5 4.5 2.2 0.4 150 11.3 9.1 f.2 3.7 1.7 0.3 100 9.3 7.4 5.0 2.9 1.3 0.3 80 7.2 6.1 4.0 2.3 0.9 60 5.0 3.9 2.5 1.3 0.5 50 4.4 3.4 2.2 1.1 0.4 40 3.7 2.9 1.! 0.9 30 2.6 2.0 1.2 0.6 20 1.6 1.2 C.6 10 0.8 0.4 • NOTE: SOIL LOSS FOR VALUES WHERE 'E' 15 LESS THAN 0.1 CP GREATER THAN 440.0 ARE NOT SHOWN; OTHER VALUES NOT SHOWN ARE INVALID II NCTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NCT 'V' -30- 1618 SOIL LCSS FROM WINO EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 SURFACE - K . l.C C . 20 I 220 ILI T11.14.4. - FLAT SMALL GRAIN RESIDUE IN PCUNOS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 44.0 37.5 28.6 20.1 11.6 2.3 I.C 0.5 8000 44.C 37.5 28.6 20.1 11.6 5.3 2.3 1.0 0.5 6000 44.0 37.5 28.6 20.1 11.6 5.3 2.3 I.C 0.5 4000 44.0 37.5 28.6 20.1 11.6 5.3 2.3 1.0 0.5 3000 44.0 37.5 28.6 20.1 11.6 5.3 2.3 1.0 0.5 2000 44.0 37.5 28.6 20.1 11.6 5.3 2.3 1.0 0.5 1000 44.0 37.5 28.6 20.1 11.6 5.3 2.3 1.0 0.5 800 44.0 37.5 28.6 20.1 11.6 5.3 2.3 1.C 0.5 600 42.1 35.8 27.2 19.0 10.9 4.9 2.1 0.9 0.4 400 40.2 34.1 25.8 17.9 10.2 4.5 1.9 0.8 0.4 300 38.2 32.4 24.5 16.9 9.6 4.2 1.8 0.6 200 34.6 29.2 21.8 14.9 8.3 3.5 1.5 0.5 150 31.6 26.6 19.8 13.3 7.3 3.0 1.2 C.4 100 28.4 23.8 17.5 11.6 6.3 2.5 1.0 80 24.9 20.7 15.1 9.9 5.2 2.C 0.8 60 21.1 17.5 12.6 0.1 4.1 1.5 0.5 50 18.9 15.6 11.1 7.0 3.5 1.2 40 16.6 13.6 9.6 6.0 3.0 1.0 30 13.4 1C.5 1.6 4.6 2.2 0.7 20 9.6 7.7 5.2 3.0 1.4 0.3 IO 4.1 3.2 2.0 1.1 0.4 M. SOIL LOSS FROM WINO EROSION IN 1dS PER ACRE PER YEAR JANUARY.1981 C . 20 SURFACE - K . 0.7 1220 ILI (VIP. - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSPELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 30.6 25.5 19.2 12.9 7.0 2.9 1.2 0.4 8000 30.8 25.9 19.2 12.9 7.0 2.9 1.2 C.4 6000 30.E 25.5 19.2 12.9 7.0 2.9 1.2 0.4 4000 30.8 25.5 19.2 12.9 7.0 2.9 1.2 0.4 3000 30.8 25.5 19.2 12.9 7.0 2.9 1.2 0.4 2000 30.8 25.5 19.2 12.9 7.0 2.9 1.2 0.4 1000 29.3 24.6 18.2 12.1 6.6 2.6 1.0 809 28.1 23.5 17.3 11.5 6.2 2.4 1.0 600 26.2 21.9 16.0 10.6 5.6 2.2 0.8 400 23.7 19.7 14.3 9.3 4.9 1.8 0.7 300 21.9 18.2 13.1 8.4 4.4 1.6 0.6 200 18.5 15.3 10.9 6.8 3.4 1.2 150 15.f 12.8 5.C 5.5 2.7 C.9 100 13.4 10.9 7.6 4.6 2.2 0.7 80 11.7 5.5 6.5 3.8 1.8 0.4 60 9.3 7.5 5.0 2.9 1.3 0.3 50 7.7 6.2 4.1 2.3 0.9 40 6.1 4.5 3.2 1.7 0.7 30 4.3 3.4 2.1 1.1 0.4 20 2.7 2.1 I.3 0.6 10 1.2 0.9 0.5 IF). SOIL LOSS FROM WIND ER051CN IN TENS PER ACRE PER YEAR JANUARY.1981 C . 20 SURFACE - . 0.5 I . 22C ILI /VI.. - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 22.C 16.3 13.2 8.5 4.4 1.6 0.6 0000 22.0 18.3 13.2 8.5 4.4 1.6 0.6 6000 22.C 18.3 13.2 8.5 4.4 1.6 0.6 4000 22.0 18.3 13.2 8.5 4.4 1.6 0.6 3000 22.0 12.3 13.2 8.5 4.4 1.6 0.6 2000 21.4 17.1 12.0 8.2 4.2 1.5 0.6 1000 18.8 15.5 11.1 7.0 3.5 1.2 800 17.0 14.7 1C.4 6.5 3.3 1.1 600 15.8 12.9 9.1 5.6 2.8 C.9 400 13.9 11.3 7.9 4.8 2.3 0.7 300 12.♦ 10.0 6.5 4.1 2.0 0.4 200 9.7 7.8 5.3 3.1 1.4 0.3 150 7.7 6.1 4.1 2.3 0.9 100 5.7 4.5 2.9 1.6 0.6 80 4.6 3.6 2.3 1.2 0.5 60 3.5 2.7 1.7 0.8 50 2.8 2.2 1.3 0.6 40 2.1 1.6 1.C 0.4 30 1.6 1.2 0.6 20 1.C C.5 10 . NOTE: SOIL LOSS FOP VALUES WHERE 'E' IS LESS THAN 0.1 CR GREATER THAN 440.0 APE NOT SHOWN: OTHER VALUES NOT 91CWR ARE INVALID S. NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NET •V. -31- (TI! SOIL LOSS FROM WINO EROSICN IN TONS PER ACRE PER YEAR JANUARY.198 C = 20 SURFACE - A = I.C I = 180 ILI IV)•• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 20CC 2250 2500 2150 3000 IN FEET 10000 36.0 30.4 22.9 15.7 8.8 3.8 1.6 0.5 8000 36.0 30.4 22.9 15.1 8.8 3.8 1.6 0.5 6000 36.C 30.4 22.5 15.7 8.8 3.8 1.6 0.5 4000 36.0 30.4 22.9 15.7 8.8 3.8 1.6 C.5 3000 36.C 30.4 22.5 15.7 8.8 3.8 1.6 0.5 2000 36.0 30.4 22.9 15.7 8.8 3.8 1.6- 0.55 1000 35.4 29.9 22.4 15.3 8.6 3.6 1.5 0.5 800 34.5 29.1 21.8 14.9 8.3 3.5 1.4 0.5 600 33.2 28.0 20.9 14.1 7.8 3.3 1.3 0.4 400 30.7 25.8 19.1 12.8 7.0 2.9 1.1 0.4 300 28.9 24.3 17.9 11.9 6.4 2.6 1.0 200 24.6 20.5 14.9 9.7 5.1 2.0 0.7 150 21.9 18.2 13.1 8.4 4.4 1.6 0.6 100 19.2 15.8 11.3 7.1 3.6 1.3 80 17.C 14.0 9.9 6.1 3.1 1.0 60 13.8 11.3 7.8 4.7 2.3 C.1 50 12.2 9.9 6.8 4.0 1.9 0.4 40 10.'. 8.5 5.7 3.4 1.6 0.3 30 8.6 6.9 4.6 2.6 1.2 0.2 20 4.6 3.6 2.3 1.2 0.5 IO 1.9 X1.5 0.8 IEl• SOIL LOSS FROM WIND EROSICN IN TCNS PER ACRE PER YEAR JANUARY.1981 SURFACE - A = 0.7 I = 180 ILI IV)•• - FLAT SMALL GRAIN RESIDUE 16 POUNDS PFP ACRE UNSHELTERED DISTANCE 0 25C SOC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 25.2 21.0 15.3 10.0 5.3 2.0 0.8 8000 25.2 21.0 15.3 10.0 5.3 2.C 0.8 6000 25.2 21.0 15.3 10.0 5.3 2.0 0.8 4000 25.2 21.0 15.3 10.0 5.3 2.0 0.8 3000 25.2 21.0 15.3 10.0 5.3 2.C 0.8 2000 24.5 20.8 15.1 9.9 5.2 2.0 0.8 1000 23.2 19.3 14.0 9.1 4.7 1.8 0.7 800 22.4 18.6 13.4 8.7 4.5 I.T 0.6 600 20.5 17.0 12.2 7.8 4.0 1.4 0.5 400 18.1 14.9 10.6 6.7 3.3 1.2 300 16.1 13.2 9.3 5.8 2.8 1.0 200 13.5 11.0 7.7 4.6 2.2 0.7 150 11.5 9.3 6.4 3.8 1.8 0.3 100 9.5 7.6 5.1 3.0 1.4 0.3 80 7.9 6.3 4.2 2.4 0.9 60 5.2 4.1 2.f 1.4 0.5 50 4.5 3.5 2.2 1.2 0.4 40 3.8 3.0 1.9 0.9 30 2.7 2.0 1.2 0.6 20 1.6 1.2 C.7 10 0.8 C.5 ICI* SOIL LOSS FROM WIND ERCSICN 15 TENS PEP ACPE PER YEAR JANUARY.19810 SURFACE - K = 0.5 I = IPC ILI (V)44 - FLAT SMALL GRAIN RESIDUE IN PCUNOS PER ACRE CN SHE L TE RE0 DISTANCE 0 25C 5CC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 18.C 14.8 10.5 6.6 3.3 1.1 8000 18.0 14.8 10.5 6.6 3.3 1.1 6000 18.0 14.8 10.5 6.6 3.3 1.1 4000 18.C 14.! 10.5 6.6 3.3 1.1 3000 18.0 14.8 10.5 6.6 3.3 1.1 2000 16.9 13.9 9.8 6.1 3.0 1.0 1000 14.4 11.7 !.1 5.0 2.4 0.8 800 13.7 11.2 1.1 4.7 2.3 0.7 600 12.1 5.8 6.7 4.0 1.9 C.4 400 9.8 7.9 5.3 3.1 1.4 0.3 300 8.2 6.6 4.4 2.5 1.0 200 5.7 4.5 2.5 1.6 0.6 150 4.3 3.4 2.7 1.1 0.4 100 3.4 2.8 1.6 0.8 80 2.8 2.2 1.3 0.6 60 I.E 1.4 C.i 50 1.5 1.1 C.t 40 1.2 0.9 0.5 30 C.! C.5 20 0.5 C.3 10 • NOTE: SOIL LOSS FCR VALUES WHERE 'E' IS LESS THAN C.1 OR GREATER THAN 440.0 APE ACT SHOWN: ETHER VALUES NOT SHOWN ARE INVALID •• NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NCI 'V' -32- 1814 SOIL LOSS FRON MIND EROSION IN TONS PER ACRE PEP YEAR JANUARY.1981 C • 20 SURFACE - K • 1.0 I • 16C ILI (VISA - FLAT SMALL GRAIN RESIDUE IA PCUhOS PER ACRE UNSHELTERED DISTANCE C 250 5CC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 32.0 26.5 20.0 13.5 7.4 3.1 1.2 0.4 8000 32.0 26.5 20.0 13.5 7.4 3.1 1.2 0.4 6000 32.0 26.9 20.0 13.5 7.4 3.1 1.2 0.4 4000 22.0 26.5 28.0 13.5 7.4 3.1 1.2 0.4 3000 32.0 26.9 20.0 13.5 7.4 3.1 1.2 C.4 2000 32.0 26.5 20.0 13.5 7.4 3.1 1.2 0.4 1000 30.6 25.8 19.1 12.8 7.0 2.8 1.1 0.4 800 29.5 24.7 18.3 12.2 6.6 2.7 1.0 600 I7.9 23.3 17.2 11.4 6.1 2.4 0.9 400 24.8 20.7 15.0 9.8 5.2 2.0 0.7 300 23.3 15.4 14.1 9.1 4.8 1.8 0.7 200 19.8 16.3 11.1 7.4 3.8 1.3 ISO 16.9 13.9 9.8 6.1 3.0 1.0 100 14.4 11.7 8.2 5.0 2.4 0.8 80 12.7 10.3 7.1 4.3 2.0 0.4 60 10.3 8.3 5.6 3.3 1.5 0.3 50 8.7 6.9 4.6 2.7 1.2 0.2 40 7.0 5.6 3.1 2.1 0.8 30 4.8 3.8 2.4 1.3 0.5 20 3.2 2.5 1.5 0.7 10 1.4 1.C C.6 IE1• SOIL LOSS FRCP, MIND 800521M IN TENS PER ACRE PER YEAR JANUARY.1981 C • 20 SURFACE - R • 0.7 I - 16C ILI IVI44 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IA FEET 10000 22.4 18.6 12.4 0.7 4.5 1.7 0.6 8000 22.4 18.6 13.4 8.7 4.5 I.] 0.6 6000 22.4 18.6 13.4 8.7 4.5 1.7 0.6 4000 22.4 18.6 12.4 8.7 4.5 1.7 0.6 3000 22.4 18.6 13.4 8.7 4.5 1.7 0.6 2000 21.0 18.1 13.0 8.4 4.3 1.6 0.6 1000 19.4 16.0 11.5 7.3 3.7 1.3 800 18.3 15.1 IC.7 6.7 3.4 1.2 600 16.3 13.4 5.4 5.8 2.9 1.0 400 14.2 11.6 8.1 4.9 2.4 0.8 300 12.7 10.4 1.1 4.3 2.0 0.4 200 10.2 8.2 5.6 3.2 1.5 0.3 150 B.1 6.5 4.3 2.5 1.0 100 6.1 4.8 3.1 1.7 0.7 BO ♦.8 3.8 2.4 1.3 0.5 60 3.7 2.9 1.8 0.9 50 3.0 2.3 1.4 0.7 40 2.3 1.8 1.1 0.5 30 1.7 1.3 0.7 20 ].C 0.6 10 (E1* SOIL LOSS FRCP MIND ERCSICN IN TINS PER ACRE PER YEAR JANUARY.1981 SURFACE - N • 0.5 C • 20 III (Into - FLAT SMALL GRAIN RESIDUE ]N PCUNCS PER ACRE I 160 UNSHELTERED DISTANCE 0 750 50C 750 1000 1250 1500 175C 200C 2250 2500 2750 3C0C IN FEET 10000 16.C 13.1 9.2 5.7 2.8 C.5 8000 16.0 13.1 5.2 5.7 2.8 C.9 6000 16.0 13.1 9.2 5.7 2.8 0.5 4000 16.0 13.1 9.2 5.7 2.8 0.9 3000 15.6 12.6 8.9 5.5 2.7 C.9 7000 14.6 11.9 8.3 5.1 2.5 0.8 1000 12.7 IC.3 7.1 4.3 2.0 0.4 800 11.9 9.7 6.6 3.9 1.9 C.4 600 10.2 8.3 5.6 3.3 1.5 0.3 400 8.3 6.1 4.4 2.5 1.1 C.2 300 6.7 5.3 3.5 1.9 0.8 200 4.7 3.7 2.4 1.2 0.5 150 3.7 2.9 1.8 0.9 100 2.] 2.1 1.3 0.6 80 2.0 1.5 0.E 60 1.5 1.1 0.6 50 1.2 0.5 C.5 40 0.9 0.5 30 0.7 0.4 20 10 4 NOTE: SOIL LOSS FOR VALUES WHERE •E• IS LESS THAN 0.1 CR GREATER THAN 440.0 ARE ACT SHOWN; OTHER VALUES NOT SHOWN ARE INVALID 5* NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. ACT •V. -33- 1E1• SOIL LOSS FROM WINO EPOSICN IN TCNS PER ACRE PER YEAR JANUARY.1981 C . 20 SURFACE - R - I.C 1 . 134 (LI Ivies - FLAT SMALL GRA1M RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 100 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IM FEET 10000 26.8 22.4 16.4 10.8 5.8 2.3 C.5 8000 26.8 22.4 16.4 10.8 5.8 2.3 0.9 6000 26.8 22.4 16.4 10.8 5.8 2.3 0.5 4000 26.8 22.4 16.4 10.8 5.8 2.3 0.9 3000 26.8 22.4 16.4 10.8 5.8 2.3 0.9 2000 26.8 22.4 16.4 10.8 5.8 2.3 0.9 1000 24.5 20.4 14.5 9.7 5.1 1.9 0.7 800 24.1 20.1 14.6 9.5 5.0 1.5 0.7 600 22.2 18.5 13.3 8.6 4.5 1.6 0.6 400 20.0 16.5 11.! 7.5 3.8 1.4 300 18.2 15.0 10.7 6.7 3.4 1.2 200 14.9 12.2 8.5 5.2 2.5 0.8 150 12.9 10.5 7.2 4.3 2.1 C.4 100 10.e 8.8 6.C 3.5 1.6 0.3 80 9.2 l.♦ 4.9 2.9 1.3 0.3 60 6.6 5.3 3.5 1.9 0.8 50 5.1 4.0 2.6 1.4 0.5 40 4.4 3.4 2.2 1.1 0.4 00 3.2 2.5 1.5 0.7 20 1.9 1.4 0.8 10 0.5 0.5 1814 SOIL LOSS FROM WINO EROSICN IM TCNS PER ACRE PER YEAR JANUART.1981 SURFACE - K • 0.7 1 • 134 ILI (VIP* - FLAT SMALL GRAIN RESIDUE IM PCUNDS PER ACRE UNSHELTERED DISTANCE 0 250 SOC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 18.8 15.5 11.0 6.9 3.5 1.2 8000 18.2 15.5 11.0 6.9 3.5 1.2 6000 18.8 15.5 11.0 6.9 3.5 1.2 4000 18.8 15.5 11.0 6.9 3.5 1.2 3000 10.8 15.5 11.0 6.9 3.5 1.2 2000 17.8 14.7 10.4 6.5 3.3 1.1 1000 15.1 12.4 8.6 5.3 2.6 0.8 800 14.4 11.7 8.2 5.0 2.4 0.8 600 12.8 10.4 7.2 4.3 2.1 0.4 400 10.7 8.6 5.5 3.4 1.6 0.3 300 9.0 7.2 4.2 2.8 1.3 0.3 200 6.6 5.2 3.4 1.9 0.7 I50 ♦.7 3.7 2.4 1.2 0.5 100 3.8 2.9 1.8 0.9 80 3.2 2.4 1.5 0.7 60 2.0 1.5 0.8 50 1.7 1.3 C.7 40 1.4 1.0 0.5 30 0.9 0.5 20 0.6 0.4 10 III* SOIL LOSS FROM WINO EROSICN IN TCNS PER ACRE PER YEAR JANUARY.1981 C . 20 SURFACE - K . 0.! I • 134 ILI (VI** - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 13.4 10.9 7.6 4.6 2.2 0.7 0000 13.4 1C.5 7.6 4.6 2.2 0.7 6000 13.4 10.9 7.6 4.6 2.2 0.7 4000 12.8 10.4 7.2 4.3 2.0 0.4 3000 12.3 10.0 6.9 4.1 1.9 0.4 2000 11.8 9.6 6.6 3.9 1.8 0.4 1000 9.2 7.4 S.C 2.9 1.3 0.3 800 8.5 6.9 ♦.6 2.6 1.2 0.2 600 7.2 5.! 3.8 2.1 0.8 400 5.4 4.2 2.7 1.5 0.6 300 4.5 3.6 2.3 1.2 0.5 200 3.4 2.6 1.6 0.8 150 2.5 1.9 1.2 0.5 100 1.8 1.4 0.7 80 1.5 1.1 0.6 60 1.0 0.6 50 0.E C.5 40 0.7 0.4 30 20 10 • NOTE: SPIT LOSS FOR VALUES WHERE :E• IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE ACT SHOWN: CTHEP VALUES NOT SHOWN ARE INVALID Co NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. ACT 'V' -34- 1EIR SOIL LOSS FROM WINO EROSICN IN TONS PER ACRE PER YEAR JANUARY.19E1 SURFACE - R . 1.0 C • S86 I ' B6 ILI (V144 - FLAT SNAIL GRAIN RESIDUE IN PCUNOS PER ACRE , UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 17.2 14.1 10.0 6.2 3.1 1.1 8000 17.2 14.1 10.C 6.2 3.1 1.1 6000 17.2 14.1 10.0 6.2 3.1 1.1 4000 17.2 14.1 10.0 6.2 3.1 1.1 3000 17.0 14.0 9.5 6.2 3.1 1.0 2000 15.9 13.0 9.2 5.7 2.8 0.9 1000 13.7 11.2 7.7 4.7 2.3 0.7 800 13.0 10.6 7.3 4.4 2.1 0.4 600 11.4 5.2 6.3 3.7 1.7 0.3 400 9.2 7.4 5.0 2.9 1.3 0.3 300 7.6 6.1 4.0 2.3 0.9 200 5.2 4.1 2.6 1.4 0.5 150 4.1 3.2 2.0 1.0 0.4 100 3.1 2.4 1.5 0.7 80 2.5 1.9 1.1 0.5 60 1.7 1.3 0.7 50 1.4 1.0 0.5 40 1.0 0.6 30 0.8 0.5 20 10 181* SOIL LCSS FROM WIND EROSION IN TONS PEP ACRE PER YEAR JANUARY.1981 SURFACE - R . 0.7 C . 86 I • 86 ILI (V1 * - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 12.C 9.8 6.7 4.0 1.9 0.4 8000 12.0 5.@ 6.7 4.0 1.9 0.4 6000 12.0 5.8 6.7 4.0 1.9 0.4 4000 11.7 5.4 6.5 3.8 1.8 0.3 3000 11.1 9.0 6.1 3.6 1.7 C.3 2000 10.2 8.3 5.6 3.3 1.5 0.3 1000 7.7 6.2 4.1 2.3 0.9 800 7.1 5.7 3.7 2.1 0.8 600 5.5 4.4 2.8 1.5 0.6 400 4.4 3.4 2.2 hl 0.4 300 3.7 2.9 1.8 0.9 200 2.6 2.0 1.2 0.6 150 1.9 1.4 0.8 100 1.4 1.1 0.6 80 1.1 0.8 0.4 60 0.8 0.4 50 0.4 C.♦ 40 30 20 10 (E14 SOIL LOSS FROM WIND EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 SURFACE - R . C.5 C C . 20 ILI (VI.. - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE I . 86 UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 0.E 8.9 4.6 2.6 1.2 0.2 8000 8.6 6.9 4.6 2.6 1.2 0.2 6000 8.4 6.9 4.6 2.6 1.2 0.2 4000 7.8 6.2 4.1 2.3 0.9 3000 7.2 5.7 3.8 2.1 0.8 2000 6.6 4.7 3.2 1.7 0.7 1000 4.4 3.5 2.2 1.2 0.4 800 4.C 3.1 1.5 C.9 600 3.3 2.6 1.6 0.8 400 2.4 1.8 1.1 0.5 300 1.9 1.4 0.8 200 1.3 1.0 0.5 ISO 0.5 C.5 100 0.7 0.4 80 0.5 0.3 t0 50 40 30 20 10 * NOTE: SOIL LOSS FCP VALUES WHERE 'F) IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NCT SHOWN: CTHEP VALUES NOT SHOWN ARE INVALID .t NCTF; VALUES SHOWN ARE FLAT SMALL GRAIN EOUIVALEN7. NCT •V. -35- (EI• SOIL LOSS FROM WINO EROSICN IA TCNS PER ACRE PER YEAR JANUARY.19A1 C • 20 SURFACE - K • 1.0 I • 56 ILI (VIA. - FLAT SMALL GRAIN RESIDUE IA POUNDS PER ACRE UN SHE L TE REO DISTANCE 0 25C 5CC 750 1000 1250 1500 1750 2000 2250 2500 2150 3000 IN FEET 10000 11.2 5.1 6.2 3.7 1.7 0.3 8000 11.2 9.1 6.2 3.7 1.7 0.3 6000 11.2 9.1 6.2 3.7 1.7 0.3 4000 10.7 8.6 5.5 3.4 1.6 0.3 3000 10.1 8.2 5.5 3.2 1.5 0.3 2000 9.2 7.4 5.0 2.9 1.3 0.3 1000 6.8 5.4 3.6 2.0 0.8 800 6.0 4.8 3.1 1.7 0.7 600 4.8 3.7 2.4 1.3 0.5 400 4.0 3.1 1.5 0.9 300 3.3 2.5 1.6 0.7 200 2.1 1.6 1.C 0.4 150 1.6 1.2 0.7 100 1.2 0.9 C.5 80 0.9 0.5 60 0.6 0.4 50 40 30 20 10 IEI• SOIL LOSS FROM RIND EROSION IN ICNS PER ACRE PEP YEAR JANUARY.1981 C . 20 SURFACE - A • 0.7 I I . 56 ILI (vie* - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1150 2000 2250 2500 2150 3000 IN FEET 10000 7.2 6.3 4.2 2.3 0.9 8000 7.8 6.3 4.2 2.3 0.9 6000 7.8 6.2 4.1 2.3 0.9 4000 6.5 5.5 3.6 2.0 0.8 3000 6.3 5.0 3.2 1.8 0.7 2000 5.0 3.9 2.5 1.3 0.5 1000 4.0 3.1 1.9 0.9 800 3.5 2.7 1.7 0.8 600 2.9 2.2 1.4 0.6 400 1.9 1.5 0.8 300 1.6 1.2 C.7 200 1.1 0.8 0.4 150 0.8 C.5 100 0.6 0.3 80 60 50 40 30 20 10 IE1• SOIL LOSS FROM RIND EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C • 20 SURFACE - K • 0.5 1 • 56 ILI IVI•• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 S00 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FFET 10000 5.6 4.4 2.9 1.5 0.6 8009 5.6 4.4 2.9 1.5 0.6 6000 5.1 4.1 2.6 1.4 0.5 4000 4.7 3.7 2.3 1.2 0.5 3003 4.3 3.4 2.1 1.1 0.4 2000 3.8 2.5 1.8 0.5 1000 2.6 2.0 1.2 0.6 OCO 2.1 1.6 C.5 0.4 600 1.7 1.3 C.7 400 1.3 0.9 0.5 301 C.S C.5 203 0.6 0.4 ISO 100 80 60 50 40 30 20 10 • NOIF: '_OIL LOSS FOR VALUES WHERE •E' IS LESS THAN C.1 CR GREATER THAN 440.0 ARE NET SHOWN: OTHER VALUES NOT SHORN ARE INVALID •• NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. ACT 01/1 -36- CEP., SOIL LOSS FROM WIND EROSICN IN TCNS PER ACRE PER YEAR JANUARY.1981 C • 20 SURFACE - K • 1.0 I • 48 ILI 121612 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 16000 9.6 7.7 5.2 3.0 1.4 0.3 8000 9.6 7.7 5.2 3.0 1.♦ 0.3 6000 9.6 7.7 5.2 3.0 1.4 0.3 4000 8.8 7.1 4.7 2.7 1.2 0.2 3000 8.2 6.6 4.♦ 2.5 1.0 2000 7.3 5.8 3.8 2.1 0.8 1000 5.C 4.0 2.5 1.4 0.5 800 4.5 3.6 2.3 1.2 0.5 600 3.9 3.0 1.9 0.9 400 3.1 2.4 1.5 0.7 300 2.4 1.8 1.1 0.5 200 1.6 1.2 C.7 ISO 1.2 0.9 0.5 100 0.8 0.5 80 0.7 0.4 60 50 40 30 20 10 IEI• SOIL LOSS FROM WINO ERCSICN IN TONS PEP ACP( PER YEAR JANUARY.1981 C • 20 SURFACE - R • 0.7 I . 48 ILI 12162 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 SCC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 6.7 5.3 3.5 1.9 0.8 8000 6.7 5.3 3.5 1.9 0.8 6000 6.4 5.0 3.3 1.8 0.7 4000 5.5 4.3 2.6 1.5 0.6 3000 4.9 3.8 2.4 1.3 0.5 2000 4.4 3.4 2.2 1.1 0.4 1000 3.2 2.5 1.5 0.7 800 2.8 2.2 1.3 0.6 600 2.1 1.6 I.C 0.4 400 1.6 1.2 0.7 300 1.3 1.0 0.5 200 0.9 0.5 150 0.6 0.♦ 100 80 60 50 40 30 20 10 IE16 SOIL LOSS FROM WIND EROSICN IN IONS PER ACRE PER YEAR JANUARY.1981 C • 20 SURFACE - K • C.5 I • 48 ILI IV)** - FLAT SMALL GRAIN RESIDUE IN POUNDS PEP ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 1C000 4.1 3.8 2.4 1.3 0.5 8000 4.8 3.8 2.4 1.3 0.5 6000 ♦.5 3.6 2.3 1.2 0.5 4000 4.2 3.3 2.C 1.1 0.4 3000 3.7 2.8 1.8 0.8 2000 3.2 2.5 1.5 0.7 1000 1.9 1.5 0.8 800 1.7 1.3 0.7 600 1.3 1.0 0.5 400 0.5 0.5 300 0.7 C.4 200 150 100 80 60 50 40 30 20 10 • • NCTF.! SOIL LOSS FOP VALUES WHERE 'F' IS LESS THAN 0.1 CR GREATER THAN 440.0 ARE NCT SHOWN: OTHER VALUES NOT SHOWN ARE INVALID •6 NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT 'V' -37- IElm SOIL LOSS FROM WINO'ERCSICM IN TCNS PEP ACRE PER TEAR JANUARY.1581 SURFACE - N • 1.0 1 • 38 ILI 46144 FLAT SMALL LPA1A RESIDUE IA PC0805 PER ACRE -UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 726 6.1 4.0 2.3 0.9 8000 7a2 6.1 4.0 2.3 0.9 6000 7.5 5.9 3.5 2.2 0.9 4000 6.6 5.2 3.4 1.9 0.7 3000 5.5 4.7 3.0 1.6 0.6 2000 4.9 3.8 2.4 1.3 0.5 1000 3.8 2.9 1.8 0.9 B00 3.4 2.6 1.6 0.8 600 2.7 2.1 1.3 0.6 400 1.9 1.4 0.8 300 1.6 1.2 0.6 200 1.2 2.2 150 0.8 0.4 100 0.5 3.3 80 60 50 40 t0 20 10 IEI• SOIL LOSS FROM WIND EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C • 20 SURFACE - R . 0.7 I • 38 ILI IVI•• - FLAT SMALL GRAIN RESIDUE IA PCUMCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 11. FEET 10000 5.3 4.2 2.7 1.4 0.6 1000 5._5 4.2 2.7 1.4 0.6 6000 4.9 3.9 2.5 1.3 0.5 4000 4.5 3.5 2.2 1.2 0.5 3003 4.1 3.2 2.C 1.0 0.4 2000 3.6 2.8 1.7 0.8 S000 2.4 1.8 1.1 0.5 000 1.9 1.5 0.8 400 1.2 1.2 0.6 400 1.1 0.5 C.5 300 0.8 0.5 '200 0.5 0.3 150 100 00 60 50 40 30 '20 10 .2.. suit LOSS FPCM WIND EPOSICN IN ELLS PEP ACRE PEP YEAR JANUARY.1981 C • 20 SURFACE - N • 0.5 I • 38 ILI (Vie* - FLAT SMALL GRATA RESIDUE IN PCUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 3.8 3.0 1.8 0.9 8000 3.8 2.5 1.8 0.9 6000 3.4 2.7 1.7 0.8 4000 3.1 2.4 1.5 0.7 3000 2.6 2.0 1.2 0.6 2000 2.1 1.6 1.0 0.4 1000 1.4 1.0 C.•. 800 1.1 0.8 0.4 600 0.5 0.5 400 0.6 0.4 • 300 200 ISO I00 80 60 50 40 30 20 10 • NCIE: SOIL LOSS FOP VALUES WHERE •F' IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NCI SHONN: OTHER VALUES NOT SHCWN APE INVALID •4 NOTE: VALUES SEOWN ARE FLAT SMALL GRAIN EOUIVALENT. NOT 'V' -38- AS 1E14 SOIL LOSS FROM WIND EROSION IN ICNS PFR ACRE PER YEAR JANUARY.1981C * 20 SURFACE - K • 1.C I • 21 ILI IV144 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 4.2 3.3 2.1 1.1 0.4 8000 4.2 3.3 2.1 1.1 0.4 6000 3.5 3.0 1.9 0.9 4000 3.6 2.8 1.7 0.8 3000 3.1 2.4 1.4 0.1 2000 2.6 2.C 1.2 0.6 1000 1.6 1.2 0.6 800 1.4 1.0 0.6 600 1.0 0.6 400 0.7 0.4 300 200 150 100 80 60 50 40 30 20 10 IE14 SOIL LOSS FROM WINO EROSION IA ICNS PER ACRE PER YEAR JANUARY.198120 SURFACE - K • 0.7 I • 21 ILI (VI** - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE C 250 5CC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IA FEET 10000 2.9 2.3 1.4 0.7 8000 2.8 2.1 1.3 0.6 6000 2.5 1.9 1.1 0.5 4000 2.2 1.7 I.C 0.5 3000 1.9 1.4 0.8 2000 1.5 1.1 0.6 1000 0.9 0.5 800 0.8 0.5 600 0.6 0.3 400 300 200 150 100 80 60 50 40 30 20 10 (E14 SOIL LOSS FROM WIND EROSICN IN TONS PER ACRE PEP YEAR JANUARY.1981 C • 20 SURFACE - K • 0.5 I • 21 ILI (1/14* - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 2.1 1.6 I.C 0.4 P000 2.0 1.5 0.1 6000 1.5 1.4 C.E 4000 1.6 1.2 0.7 3000 1.5 1.1 0.6 2000 1.2 0.9 C.•. 1000 0.7 0.4 800 0.f 0.?600 400 300 200 150 100 80 f0 50 40 30 20 10 • NOTE: SOIL LOSS FOR VALUES WHERE •E' IS LESS THAN 0.1 CR GREATER THAN 440.0 ARE NCT SHOWN; OTHER VALUES NOT SHOWN ARE INVALID 44 NOTEI VALUES SHOWN ARE FLAT SMALL GRAIN FOCI VALENI. NCT •V' -39- (El• SOIL LOSS FROM WINO EPOSICN IN TCNS PER ACRE PER YEAR JANUARY.1561 L 20 SURFACE.- R • 1.0 I 12 IL-I IV)** FLAT SMALL GRAIN RESIDUE 1N PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1150 2000 2250 2500 2150 3000 IN FEET IC000 2.4 1.8 1.1 0.5 8000 2.2 1.7 1.C 0.5 6000 2.0 1.5 0.E 4000 1.8 1.4 0.7 3000 1.6 1.2 C.7 2000 1.3 1.0 0.5 1000 C.8 C.5 800 0.6 0.4 600 400 300 200 150 100 80 60 50 40 30 20 IO (EP* SOIL LCSS FROM WINO EROSION IN TOTS PER ACRE PER YEAR JANUARY.19B1 0 • 20 SURFACE - K • 0.7 I • 12 IL) ty1•• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1150 2000 2250 2500 2750 3000 IN FEET 10000 1.7 1.3 C.1 8000 1.6 1.2 0.6 6000 1.5 1.1 C.6 4000 1.2 0.9 0.5 3000 1.1 C.8 C.4 2000 0.9 0.5 1000 0.5 0.3 800 600 400 300 200 150 100 80 60 50 40 30 20 10 IE1• SOIL LCSS FROM WINO EPOS3CN IN TCNS PER ACRE PER YEAR JANUARY.1961 C • 20 SURFACE - K • 0.5 I • 12 IL) 11/1401 - FLAT SMALL GRAIN RESIDUE IN PCLNDS PEP ACRE UNSHELTERED DISTANCE C 25C 5CC 750 1000 1250 1500 1750 2000 2250 2500 2150 3000 IN FEET 10000 1.2 0.9 C.5 8000 1.1 C.8 C.4 6000 1.0 0.6 4000 0.8 0.5 3000 0.7 0.4 2000 0.6 0.4 1000 B00 600 400 300 200 150 100 80 60 50 40 30 20 10 • NOTE: SOIL LOSS FOR VALUES WHERE 'F' IS LESS THAN C.1 OR GREATER THAN 440.0 APE NCT SHOWN: CTHER VALUES NOT SHOWN ARE INVALID •• NCTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT 'V' -40- 1110 SOIL LOSS FROM Nita EROSION IA TENS PER ACRE PER YEAR JANUARY.1981 C • 40 SURFACE - K • 1.0 I • 310 ILI IV1•A - FLAT SMALL GRAIN RESIDUE IK POUNDS PER ACRE UNSHELTERED DISTANCE 0 25C 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IK FEET 10000 124.0 110.2 91.6 73.3 50.3 31.5 18.0 10.E 7.1 3.1 1.6 0.2 8000 124.0 110.2 91.6 73.3 50.3 31.5 18.0 10.6 7.1 3.1 1.6 0.2 6000 124.0 110.2 91.6 73.3 50.3 31.5 18.0 10.6 7.1 3.1 1.6 0.2 4000 124.0 110.2 91.6 73.3 50.3 31.5 18.0 10.6 7.1 3.1 1.6 0.2 3000 124.0 110.2 91.6 73.3 50.3 31.5 18.0 IC.! 7.1 3.1 1.6 0.2 2000 124.0 110.2 91.2 73.3 50.3 31.5 18.0 10.6 7.1 3.1 1.6 0.2 1000 124.0 110.2 91.6 73.3 50.3 31.5 18.0 10.6 7.1 3.1 1.6 0.2 800 124.0 110.2 91.6 73.3 50.3 31.5 18.0 10.E 7.1 3.1 1.6 0.2 600 124.C 110.2 51.6 73.3 50.3 31.5 18.0 10.6 7.1 3.1 1.6 0.2 400 124.0 110.2 91.6 73.3 50.3 31.5 18.0 10.6 7.1 '_.1 1.6 0.2 300 122.1 IC8.5 SC.I 71.9 49.2 30.7 17.5 10.2 6.8 3.0 1.5 0.2 200 117.0 103.8 85.8 68.2 46.4 28.5 16.1 9.3 6.2 2.6 1.3 0.2 150 112.2 95.3 81.9 64.7 43.7 26.5 14.8 8.4 5.6 2.3 1.1 0.2 100 107.9 95.4 18.3 61.6 41.3 24.8 13.7 7.7 5.0 2.1 1.0 0.2 80 104.1 91.8 75.2 58.9 39.2 23.3 12.8 7.1 4.6 1.9 0.9 0.1 60 97.4 15.1 65.8 54.2 35.7 20.8 11.2 6.1 3.9 1.5 0.7 0.1 50 92.4 81.1 65.8 50.7 33.2 19.0 10.1 5.4 3.4 1.3 0.4 40 E7.4 76.6 61.5 47.4 30.7 17.3 9.1 4.8 3.0 1.1 0.4 30 78.1 68.1 54.5 41.2 26.2 14.2 7.2 3.7 2.3 C.8 20 66.4 57.6 45.5 33.6 20.8 10.8 5.3 2.6 1.5 0.5 '10 48.0 41.1 31.6 22.4 13.2 6.2 2.8 1.2 0.5 (EIS SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C • 40 SURFACE - K • 0.7 I • 310 ILI 10144 FLAT SMALL GRAIN RESIDUE IN POUNDS PEP ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 200C 2250 2500 2750 3000 IN FEET 10000 86.1 76.0 61.4 46.9 30.4 17.0 8.9 4.7 3.0 1.1 0.3 8000 86.8 76.0 61.4 46.9 30.4 17.0 8.9 4.7 3.0 1.1 0.3 6000 86.6 76.0 61.4 46.9 30.4 17.0 8.9 4.7 3.0 1.1 0.3 4000 86.8 76.0 61.4 46.9 30.4 17.0 8.9 4.7 3.0 1.1 0.3 3000 86.8 76.0 61.4 46.9 30.4 17.0 8.9 4.7 3.0 1.1 0.3 2000 86.8 76.0 61.4 46.9 30.4 17.0 8.9 4.7 3.0 1.1 0.3 1000 86.8 76.0 61.4 46.9 30.4 17.0 8.9 4.7 3.0 1.1 0.3 800 86.5 75.7 61.1 46.7 30.2 12.9 8.9 4.7 2.9 1.1 0.3 600 83.6 73.1 58.8 44.8 28.8 16.0 8.3 4.3 2.7 1.0 0.3 400 80.4 70.2 56.3 42.7 27.2 14.9 7.7 4.0 2.4 0.9 0.3 300 77.7 67.8 54.2 40.9 26.0 14.1 7.2 3.7 2.3 0.8 200 72.2 62.7 49.9 37.3 23.4 12.4 6.2 3.1 1.9 0.6 ISO 66.6 57.7 45.6 33.7 20.9 10.8 5.3 2.6 1.5 0.5 100 60.8 52.5 41.1 30.1 18.3 9.2 4.4 2.1 1.2 80 56.6 41.7 38.C 27.5 16.6 8.2 3.8 1.8 1.0 60 50.5 43.3 33.4 23.9 14.1 6.7 3.1 1.4 0.8 50 46.4 35.2 36.4 21.5 12.5 5.8 2.6 1.1 0.5 40 42.3 36.0 27.4 19.2 11.0 5.0 2.2 C.5 0.4 30 36.3 30.7 23.1 15.8 8.9 3.8 1.6 0.5 20 29.4 24.7 18.2 12.2 6.6 2.7 1.0 10 18.5 15.2 10.8 6.8 3.4 1.2 (El* SOIL LOSS FROM WIND EROSION IN TONS PER ACRE PER YEAR JANUARY.1481 C • 40 SURFACE - K • 0.5 I • 310 111 (V144 - FLAT SMALL GRAIN RESIDUE TN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEEL 10000 62.0 53.6 42.1 30.8 18.9 9.5 4.6 2.2 1.3 8000 62.0 53.6 42.1 30.8 18.9 9.5 4.6 2.2 1.3 6000 62.C 53.6 42.1 30.8 18.9 9.5 4.6 2.2 1.3 4000 62.0 53.6 42.1 30.8 18.9 9.5 4.6 2.2 1.3 3000 62.0 53.6 42.1 30.8 18.9 9.5 4.6 2.2 1.3 2000 62.0 53.6 42.1 30.8 18.9 9.5 4.6 2.2 1.3 1000 59.6 51.4 40.3 29.4 17.9 8.9 4.3 2.0 1.2 800 58.1 50.1 39.1 28.5 17.2 8.5 4.0 1.9 1.1 600 56.1 48.3 37.6 27.2 16.4 8.0 3.8 1.8 1.0 400 52.4 45.0 34.8 25.0 14.9 7.1 3.3 1.5 0.9 300 49.2 42.1 32.5 23.1 13.6 6.4 2.9 1.3 0.6 200 43.1 36.7 28.0 19.6 11.3 5.1 2.2 1.0 0.4 ISO 38.3 32.5 24.5 16.9 9.6 4.2 1.8 0.7 0.3 100 34.3 28.9 21.6 14.7 8.2 3.4 1.4 0.5 80 31.2 26.3 19.5 13.1 7.2 2.9 1.2 0.4 60 26.3 22.0 16.1 10.6 5.6 2.2 0.8 SO 23.2 19.6 14.2 9.2 4.8 1.8 0.7 40 21.4 17.7 12.7 8.2 4.2 1.5 0.6 30 17.5 14.4 10.2 6.4 3.2 1.1 20 13.0 10.5 7.3 4.4 2.1 0.4 10 6.9 5.5 3.6 2.0 0.8 • NOTE: SOIL LOSS FOP VALUES WHERE 'E' IS LESS THAN 0.1 CR GREATER THAN 440.0 ARE NCT SHOWN; OTHER VALUES NOT SHOWN ARE INVALID A4 NOTES VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT 'V' -41- I EI• SOIL LCSS FPCM MIND EROSIGN IN TCNS PER ACRE PER YEAR JANUARY.1981. C • 40 SURFACE - 8 • 1.0 I • 250 ELI 1V N9 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTEREO DISTANCE C 25d 5CC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 Ih FEET 10000 100.C 88.1 71.9 56.0 37.1 21.7 11.8 6.5 4.2 1.7 0.8 0.1 8000 100.0 86.I 71.9 56.0 37.1 21.7 11.8 6.5 4.2 1.7 0.8 0.1 6000 100.0 88.1 71.9 56.0 37.1 21.7 11.8 6.5 4.2 1.7 0.8 0.1 4000 100.0 81.1 711.5 56.0 31.1 21.7 11.8 6.5 4.2 1.7 0.6 0.1 3000 100.0 88.1 71.9 56.0 37.1 21.7 11.8 6.5 4.2 1.7 0.8 0.1 2000 100.0 88.1 11.9 56.0 37.1 21.1 11.0 6.5 4.2 1.7 0.8 0.1 1000 100.0 88.1 71.5 56.0 37.1 21.7 11.8 6.5 4.2 1.7 0.8 0.1 800 100.0 86.1 71.9 56.0 37.1 21.7 11.8 6.5 4.2 1.7 0.8 0.1 600 100.0 88.1 765 56.0 37.1 21.7 11.8 6.5 4.2 1.7 0.8 0.1 400 97.1 85.5 69.6 54.0 35.6 20.7 11.1 6.1 3.9 1.5 0.7 0.1 300 94.3 82.5 67.3 52.0 34.1 19.6 10.5 5.7 3.6 1.4 0.4 200 88.6 77.7 62.8 48.2 31.3 17.6 9.3 4.9 3.1 1.2 0.4 ISO 83.1 72.6 58.4 44.4 28.5 16.8 8.2 4.3 2.7 1.0 0.3 100 78.0 68.0 54.4 41.0 26.1 14.2 7.2 3.7 2.3 0.8 80 73.4 63.9 50.8 38.1 24.0 12.8 6.4 3.2 2.0 C•6 60 66.2 57.4 45.3 33.5 20.7 10.7 5.2 2.6 1.5 0.5 50 60.6 52.3 41.0 30.0 18.3 9.2 4.4 2.1 1.2 40 56.3 48.5 37.7 27.3 16.5 8.1 3.8 1.8 1.0 3p 49.4 42.3 32•f 23.2 13.7 6.5 2.9 1.3 0.6 20 40.2 34.1 25.9 18.0 10.2 4.5 2.0 0.8 0.4 10 26.5 22.1 16.2 10.7 5.7 2.2 0.8 IEI• SOIL LCSS FROM WINO EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C • 40 SURFACE - R • 0.7 1 • 250 ILI 1919• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 S00 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 70.0 60.6 48.2 35.9 22.4 Il.6 5.8 2.9 1.7 0.6 8000 70.0 60.8 48.2 35.9 22.4 11.8 5.6 2.9 1.7 0.6 6000 70.0 60.8 48.2 35.9 22.4 11.8 5.8 2.9 1.7 0.6 4000 70.0 60.8 48.2 35.9 22.4 11.8 5.8 2.9 1.7 0.6 3000 70.C 60.8 48.2 35.9 22.4 11.8 5.8 2.9 1.7 0.6 2000 70.0 60.8 48.2 35.9 22.4 11.8 5.6 2.9 1.7 0.6 1000 66.5 59.8 47.3 35.2 21.9 11.4 5.7 2.8 1.7 0.5 800 66.9 58.0 45.8 33.9 21.0 10.9 5.3 2.6 1.6 0.5 600 64.7 56.0 44.2 32.6 20.1 10.3 5.0 2.4 1.4 400 60.2 52.0 40.7 29.8 10.1 9.1 4.3 2.1 1.2 300 57.2 49.3 38.4 27.9 16.9 8.3 3.9 1.8 1.1 200 52.3 44.5 34.0 24.9 14.6 7.1 3.3 1.5 0.9 150 47.3 40.4 31.0 22.0 12.9 6.0 2.7 1.2 0.5 100 42.1 35.8 27.3 19.0 10.9 ♦.9 2.1 0.9 0.4 . 80 38.6 32.7 24.7 17.1 9.7 4.2 1.8 0.8 0.3 60 33.4 28.1 21.0 14.2 7.9 3.3 1.4 0.5 SO 30.5 25.7 19.C 12.8 7.0 2.8 1.1 0.4 40 27.3 22.8 16.7 11.1 5.9 2.3 0.9 30 23.9 19.9 14.4 9.4 4.9 1.9 0.7 20 17.4 14.3 10.1 6.3 3.2 1.1 10 10.5 8.4 5.7 3.4 1.5 0.3 1116 SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C • 40 SURFACE - R • 0.5 I • 250 ILI IVH• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 50.0 42.0 33.0 23.6 13.9 6.6 3.0 1.3 0.6 8000 50.0 42.8 33.0 23.6 13.9 6.6 3.0 1.3 0.6 6000 50.0 42.8 33.C 23.6 13.9 6.6 3.0 1.3 0.6 4000 50.0 42.8 33.0 23.6 13.9 6.6 3.0 1.3 0.6 3000 50.C 42.8 33.0 23.6 13.9 6.6 3.0 1.3 0.6 2000 49.5 42.4 32.7 23.3 13.7 6.5 2.9 1.3 0.6 1000 46.3 39.6 30.3 21.4 12.5 5.8 2.6 1.1 0.5 800 44.6 38.0 29.1 20.5 11.9 5.4 2.4 1.0 0.5 600 41.2 35.1 26.6 18.5 10.6 4.7 2.1 0.9 0.4 400 37.5 31.8 23.9 16.5 9.3 4.0 1.7 0.6 300 34.7 29.3 21.9 14.9 8.3 3.5 1.5 0.5 200 30.7 25.8 19.1 12.8 7.0 2.9 1.1 0.4 150 26.5 22.1 16.2 10.7 5.7 2.2 0.8 100 23.1 19.2 13.5 9.0 4.7 1.8 0.7 80 20.! 17.3 12.4 7.9 4.1 1.5 0.5 60 17.0 13.9 9.8 6.1 3.0 1.0 50 14.E 12.1 8.5 5.2 2.5 0.8 40 13.3 10.9 7.5 4.5 2.2 0.4 30 10.6 8.6 5.8 3.4 1.6 0.3 20 7.2 5.7 3.8 2.1 0.8 10 3.5 2.7 1.7 0.6 • NOTE: SOIL LOSS FOR VALUES WHERE •E. IS LESS THAN 0.1 CR GREATER THAN 440.0 APE NOT. SHOWN CTHEP VALUES NOT SHOWN ARE INVALID •• NCTE: VALUES SHOWN ARE FLAT SNAIL GRAIN EQUIVALENT. NOT •V• -42- 121• SOIL LOSS FROM WIND EROSICN IN TCNS PEP ACRE PEN YEAR JANUARY.198`0 SURFACE - R • 1.0 I • 22C IL) (V1.4 - FLAT SMALL GRAIN RESIDUE IN PCUNOS PER ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET IB000 88.0 77.1 22.3 47.7 31.0 17.4 9.2 4.9 3.1 1.1 0.4 6000 88.0 77.1 62.3 47.7 31.0 17.4 9.2 4.9 1.1 1.1 0.4 4000 88.0 77.1 62.3 47.7 31.0 17.4 9.2 4.9 3.1 1.1 0.4 3000 88.0 77.1 62.3 47.7 31.0 17.4 9.2 4.9 3.1 1.1 0.4 2000 88.0 77.1 62.3 47.7 31.0 17.4 9.2 ♦.9 3.1 1.1 0.♦ 1000 88.0 77.1 62.3 47.7 31.0 17.4 9.2 4.9 3.1 1.1 0.4 800 88.0 77.1 62.3 47.7 31.0 17.4 9.2 4.5 3.1 1.1 0.4 600 85.2 74.6 60.1 45.9 29.6 16.5 8.6 4.5 2.9 1.0 0.3 400 82.4 72.1 57.9 44.0 28.2 15.6 8.1 4.2 2.6 0.5 0.3 300 79.3 69.2 55.4 41.9 26.7 14.6 7.5 3.8 2.4 0.8 200 73.8 64.2 51.2 38.3 24.1 12.9 6.5 3.3 2.C 0.6 150 68.7 59.6 47.2 35.1 21.8 11.4 5.6 2.6 1.7 0.5 100 63.2 54.6 43.0 31.6 19.4 9.9 4.8 2.3 1.4 130 58.3 50.2 39.3 28.6 17.3 8.6 4.1 1.9 1.1 60 51.6 44.3 34.3 24.5 14.6 7.0 3.2 1.5 0.8 50 47.7 40.7 31.3 22.2 13.0 6.1 2.7 1.2 C.5 40 43.6 37.2 28.4 19.9 11.5 5.2 2.3 1.0 0.4 30 37.3 31.6 23.8 16.4 9.2 4.0 1.7 0.6 20 30.2 25.4 18.8 12.6 6.9 2.8 1.1 0.4 10 19.C 15.7 11.2 7.1 3.6 1.3 (EI• SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PER YEAR JANUARY.19810 SURFACE - L • 0.1 I • 220 IL) (v)•• - FLAT SMALL GRAIN RESIDUE IA /[UN[S PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 1.3 10000 61.6 53.2 41.8 30.6 18.7 9.4 4.5 2.2 6000 61.6 53.2 41.8 30.6 16.7 9.4 4.5 2.2 1.3 6000 61.6 53.2 41.8 30.6 18.7 9.4 4.5 2.2 1.3 4000 61.6 53.2 41.8 30.6 18.7 9.4 4.5 2.2 1.3 3000 61.6 53.2 41.8 30.6 16.7 5.4 4.5 2.2 1.3 2000 61.6 53.2 41.8 30.6 18.7 9.4 4.5 2.2 1.3 1000 59.3 51.2 40.0 29.2 17.7 8.8 4.2 2.0 1.2 600 57.9 49.8 38.9 28.3 17.1 6.5 4.0 1.5 1.1 600 55.2 48.0 37.4 27.0 16.3 8.0 3.7 1.7 1.0 400 52.1 44.7 34.6 24.8 14.8 7.1 3.3 1.5 0.8 300 46.8 41.7 32.1 22.9 13.4 6.3 2.9 1.3 0.6 200 42.7 36.3 27.7 19.4 11.1 5.0 2.2 0.9 0.4 150 38.0 32.2 24.3 16.7 9.5 4.1 1.7 C.6 100 33.5 28.6 21.4 14.5 8.1 3.4 1.4 0.5 8060 30.9 0.4 25.9 21.6 15.8 10.4 5.5 2.1 0.8 . 50 23.4 19.4 14.1 9.1 4.8 1.6 0.7 40 21.1 17.5 12.6 8.1 4.1 1.5 0.5 30 17.2 14.2 10.0 6.2 3.1 1.1 20- 12.8 10.4 5 0.4 4 1.5 1.9 0.8 10 1E1• SOIL LCSS FROM WINE EPOSICN IN TONS PER ACRE PER YEAR JANUARRY.198`0 SURFACE - K • 0.5 I • 220 (l) mu - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3[ 01) IN FEET 10000 44.0 37.5 28.6 20.1 11.6 5.3 2.3 I.C 0.5 8000 44.0 37.5 28.6 20.1 11.6 5.3 2.3 1.0 0.5 6000 44.0 37.5 26.2 20.1 11.6 5.3 2.3 1.C 0.5 4000 44.0 37.5 28.6 20.1 11.6 5.3 2.3 1.0 0.5 3000 44.0 31.5 28.6 20.1 11.6 5.3 2.3 1.0 0.5 2000 42.8 36.5 27.6 19.4 11.2 5.1 2.2 1.0 0.4 1000 36.6 32.7 24.7 17.1 9.7 4.2 1.8 0.7 0.3 B00 37.2 31.5 23.7 16.3 9.2 4.0 1.7 C.6 600 34.3 29.0 21.7 14.7 8.2 3.5 1.4 0.5 400 31.3 22.3 19.6 13.2 1.2 3.0 1.2 0.4 300 28.4 23.8 17.5 11.6 6.3 2.5 1.0 200 23.5 15.6 14.2 9.2 4.8 1.8 0.7 150 20.7 17.1 12.3 7.8 4.0 1.5 0.5 100 17.7 14.6 10.3 6.5 3.2 1.1 80 15.3 12.5 8.8 5.4 2.6 C.5 60 12.6 10.3 7.1 4.2 2.0 0.4 50 11.0 8.9 6.0 3.6 1.7 0.3 40 9.3 7.5 5.0 2.9 1.3 0.3 30 6.8 5.4 3.2 2.0 0.8 20 4.3 3.3 2.1 1.1 0.4 10 1.9 1.4 0.8 • NOTE: 4,0.0E AOSS FOR VALUE WHERE *Es IS RE NOT SHOWN; LESS GREATER THAN OTHER VALUES NOT SHOWN ARE INVALID •• NOTE: VALUES SHOWN APE FLAT SNAIL CRAIN EQUIVALENT. NOT 'V' -43- IE14 SOIL LOSS FROM MIND EROSICN EN TCNS PEP ACRE PEP YEAR JANUARY.I981 C • 40 SURFACE - K • 1.0 I • 180 ILI IV H4 - FLAT SMALL GRAIN RESIDUE IN POUNOS PER ACRE UN SHEL TEREO DISTANCE 0 - 250 50C 750 1000 1250 1500 1750 2000 2250 2500 7.750 3000 IN FEET 10000 72.0 62.6 45.7 37.2 23.3 12.3 6.2 3.1 1.9 0.6 8000 72.0 62.6 49.7 37.2 23.3 12.3 6.2 3.1 1.9 C.6 6000 72.G 62.6 49.7 37.2 23.3 12.3 6.2 3.1 1.9 0.6 4000 72.0 62.6 49.7 37.2 23.3 12.3 6.2 3.1 1.5 0.6 3000 72.0 62.6 49.1 37.2 23.3 12.3 6.2 3.1 1.9 0.6 2000 72.0 62.6 45.7 37.2 23.3 12.3 6.2 3.1 1.9 0.6 1000 71.1 62.8 49.0 36.6 22.9 12.1 6.0 3.0 1.8 C.6 800 69.7 6C.5 48.0 35.7 22.3 11.7 5.8 2.9 1.7 0.6 600 67.2 58.3 46.0 34.1 21.1 11.0 5.4 2.6 1.6 C.5 400 62.7 54.2 42.6 31.3 19.2 9.7 4.7 2.3 1.3 300 59.8 51.6 40.4 29.5 17.5 9.0 4.3 2.0 1.2 200 54.6 46.9 36.5 26.3 15.8 7.T 3.6 1.6 0.9 I50 49.6 42.6 32.5 23.4 13.8 6.5 3.0 1.3 0.6 100 44.8 38.2 29.2 20.5 11.9 5.5 2.4 1.1 0.5 80 40.5 34.8 26.4 18.4 10.5 4.7 2.0 0.9 0.4 60 35.4 30.0 22.! 15.3 8.6 3.7 1.5 0.5 50 32.4 27.3 20.3 13.7 7.6 3.1 1.3 0.4 40 29.3 24.6 18.2 12.1 6.6 2.6 1.0 30 25.1 21.0 15.3 10.0 5.3 2.0 0.8 20 18.6 15.3 10.5 6.9 3.5 1.2 10 11.1 9.0 6.1 3.6 1.7 0.3 (El* SOIL LOSS FPCM WINO EROSION IN TCNS PER ACRE PER YEAR JANUARY.1981 C . 40 SURFACE - K • 0.7 I • 180 ILI IVI•• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE C 25C 5CC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 50.4 43.2 33.3 23.8 14.1 6.7 3.1 1.4 0.8 8000 50.4 43.2 33.3 23.8 14.1 6.7 3.1 1.4 0.8 6000 50.4 43.2 33.3 23.8 14.1 6.7 3.1 1.4 0.! 4000 50.4 43.2 33.3 23.8 14.1 6.7 3.1 1.4 0.8 3000 50.4 43.2 33.3 23.8 14.1 6.7 3.1 1.4 0.8 2000 50.C 42.5 33.1 23.6 13.9 6.6 3.0 1.4 0.8 1000 46.9 40.1 30.7 21.8 12.7 5.4 2.6 1.2 0.5 800 45.3 38.7 29.6 20.9 12.1 5.6 2.5 1.1 0.5 600 41.5 35.1 27.1 18.9 10.9 4.9 2.1 0.9 0.4 400 38.1 32.3 24.4 16.8 9.5 4.1 1.8 C.6 300 35.2 25.6 22.3 15.2 8.5 3.6 1.5 0.5 200 31.2 26.2 19.5 13.1 7.2 2.9 1.2 0.4 150 27.1 22.7 16.6 11.0 5.9 2.3 0.9 100 23.6 15.6 14.2 9.2 4.8 1.8 0.7 80 21.2 17.6 12.7 8.1 4.2 1.5 0.6 60 17.4 14.3 10.1 6.3 3.1 1.1 50 15.2 12.4 8.7 5.3 2.6 C.9 40 13.f 11.1 7.7 4.7 2.2 0.7 30 10.9 8.8 6.0 3.5 1.6 0.3 20 7.4 5.5 3.9 2.2 0.9 10 3.6 2.8 1.! 0.8 IEI• SOIL LOSS FROM WIND EROSION IN TCNS PER ACRE PER SEAR JANUARY,I9D1 C . 40 SURFACE - K • 0.5 I • 180 ILI Iv)** FLAT SMALL GRAIN RESIDUE IN PCUNOS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 36.0 30.4 22.9 15.7 8.8 3.8 1.6 0.! 8000 36.0 30.4 22.9 15.7 B.8 3.8 1.6 0.5 6000 36.0 30.4 22.9 15.7 8.8 3.8 1.6 0.5 4000 36.0 30.4 22.9 15.7 8.8 3.8 1.6 0.5 3000 36.0 30.4 22.9 15.7 8.8 3.8 1.6 0.5 2000 34.5 29.1 21.8 14.9 8.3 3.5 1.4 0.5 1000 31.0 26.1 19.3 13.0 7.1 2.9 1.2 0.4 600 29.7 25.0 18.5 12.3 6.7 2.7 1.1 600 26.4 22.0 16.1 10.6 5.7 2.2 0.8 400 22.7 18.9 13.7 8.8 4.6 1.7 0.6 300 20.5 16.9 12.1 7.7 4.0 1.4 0.5 200 16.8 13.8 5.7 6.0 3.0 1.0 150 14.0 11.4 7.5 4.8 2.3 0.7 100 11.7 9.5 6.5 3.9 1.8 C.4 80 10.3 8.3 5.7 3.3 1.5 0.3 60 7.5 5.9 3.5 2.2 0.9 SO 5.8 4.6 2.9 1.6 0.6 40 4.6 3.6 2.3 1.2 0.5 30 3.5 2.7 1.7 0.8 20 2.0 1.5 0.8 10 0.5 C.5 • 80161 SCIL LOSS FOR VALUES WHERE •1• IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NO7 SHOWN: OTHER VALUES NOT SHOWN ARE INVALID •4 NOTE: VALUES SHOWN APE FLAT SMALL GRAIN EQUIVALENT. NOT •V' -44- REP) SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PEP YEAR JANUARY.198`0 SURFACE - IC • 1.0 I • 160 ILI CV144 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 64.0 55.4 43.6 32.1 19.7 10.1 4.9 2.4 1.4 8000 64.0 55.4 43.6 32.1 19.7 10.1 4.9 2.4 1.4 6000 64.C 55.4 43.6 32.1 19.7 10.1 4.9 2.4 1.4 4000 64.0 55.4 43.6 32.1 19.7 IC.1 4.9 2.4 1.4 3000 64.0 55.4 43.6 32.1 19.7 10.1 4.9 2.4 1.4 2000 64.0 55.4 43.6 32.1 19.7 1C.1 4.9 2.4 1.4 1000 61.5 53.1 41.7 30.5 18.7 9.4 4.5 2.2 1.3 800 59.6 51.4 40.3 29.4 17.9 8.9 4.3 2.0 1.2 600 57.8 49.8 38.9 28.2 17.1 8.5 4.0 1.9 1.1 400 54.1 48.5 36.1 26.0 15.6 7.5 3.5 1.6 0.9 300 51.5 44.2 34.1 24.5 14.5 6.9 3.2 1.4 0.8 200 45.0 38.4 29.4 20.7 12.0 5.5 2.4 1.1 0.5 ISO 40.0 34.0 25.7 17.8 10.2 4.5 1.9 0.8 0.4 100 35.9 30.4 22.8 15.6 8.7 3.7 1.6 0.5 80 32.8 27.7 2C.6 14.0 7.7 3.2 1.3 0.4 60 28.2 23.6 17.4 11.6 6.2 2.5 1.0 50 24.! 20.7 15.1 9.8 5.2 2.0 0.7 40 22.5 16.7 13.5 8.7 4.5 1.7 0.6 30 18.9 15.6 11.1 7.0 3.5 1.2 20 13.9 11.4 1.9 4.8 2.3 0.7 10 7.8 6.2 4.1 2.3 0.9 CE14 SOIL LOSS FPCM WINO EROSICR IN 7CNS PER ACRE PEP YEAR JANUARY.198`0 SURFACE - K • 0.1 I • 160 ILI IVE49 - FLAT SMALL GRAIN RESIDUE IN PCURDS PER ACRE UNSHELTERED DISTANCE 0 250 SOC 150 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 44.8 38.2 29.2 20.6 11.9 5.5 2.4 1.1 0.5 8000 44.8 38.2 29.2 20.6 11.9 5.5 2.4 1.1 0.5 6000 44.8 38.1 29.2 20.6 11.9 5.5 2.4 1.1 0.5 4000 44.8 38.2 29.2 20.6 11.9 5.5 2.4 1.1 0.5 2000 43.1 37.2 28.4 19.9 11.5 5.2 2.3 1.0 0.4 1000 39.5 33.5 25.3 17.6 10.0 4.4 1.9 0.8 0.4 800 37.5 32.1 24.2 16.7 9.4 4.1 1.7 0.6 600 35.0 29.6 22.2 15.1 8.4 3.6 1.5 0.5 400 32.0 26.9 20.0 13.5 7.4 3.1 1.2 C.4 300 29.2 24.5 18.1 12.0 6.5 2.6 1.0 200 24.2 20.1 14.6 5.5 5.0 1.9 0.7 150 21.3 17.7 12.7 8.1 4.2 1.5 0.6 100 18.4 15.1 1 16.0 13.1 9.2 5.7 2.0 0.9 60 13.1 1t.7 7.4 4.4 2.1 0.4 - SO 11.5 9.3 6.4 3.8 1.8 0.3 40 9.8 7.9 5.4 3.1 1.4 0.3 30 7.3 5.8 3.9 2.2 0.9 20 4.5 3.5 2.2 1.2 0.5 10 2.C 1.5 C.8 CE14 SOIL LOSS FROM WIND FRCSICN IN TONS PER ACRE PEP YEAR SAMD'AC7.I48`D SURFACE - K • 0.5 I • 160 ILI IV)** - FLAT SMALL GRAIN RESIDUE I6 PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 5CC 750 1000 1250 1500 1750 2000 2250 2500 2750 3600 IN FEET 10000 32.0 26.9 20.0 13.5 7.4 3.1 1.2 0.4 6000 32.0 26.5 20.C 13.5 7.4 3.1 1.2 0.4 6000 32.0 26.9 20.0 13.5 7.4 3.1 1.2 0.4 4000 32.C 26.5 20.C 13.5 7.4 3.1 1.2 0.4 3000 31.5 26.5 19.7 13.2 7.3 3.0 1.2 0.4 2000 30.0 25.2 18.6 12.5 6.8 2.7 1.1 1000 25.9 21.7 15.8 10.4 5.5 2.1 0.8 800 24.6 20.5 14.5 9.7 5.1 2.0 0.7 600 22.3 18.5 13.4 8.6 4.5 1.6 0.6 400 19.5 16.1 11.5 7.3 3.7 1.3 300 17.2 14.1 10.C 6.2 3.1 1.1 200 14.1 11.5 8.C 4.9 2.3 0.8 150 11.7 9.5 6.5 3.9 1.8 0.4 100 9.4 7.6 5.1 2.9 1.3 0.3 80 7.6 6.1 4.0 2.3 0.9 60 5.1 4.0 2.6 1.4 0.5 50 4.3 3.4 2.1 1.1 0.4 40 3.5 2.7 1.7 0.8 30 2.6 2.0 1.2 0.6 20 1.6 1.2 0.6 10 0.7 C.4 • NOTE: SOIL LOSS FOR VALUES WHERE 'E• IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NOT SHOWN: OTHER VALUES NOT SHOWN ARE INVALID 49 NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT •V• -45- 181• SOIL LOSS FROM WINO EROSION IN TENS PER ACRE PER YEAR JANUA`Y.1981 s 40 SURFACE - K. • 1.C I • 134 111 (V1•• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 750 500 750 1000 1250 1500 I75C 2C00 2250 2500 2750 3000 IN FEET 10000 53.6 46.0 35.7 25.7 15.4 7.4 3.4 1.6 0.9 POCO 53.6 46.0 35.7 25.7 15.4 7.4 3.4 1.6 0.9 6000 53.6 46.0 35.1 25.7 15.4 7.4 3.4 1.6 0.9 4000 53.6 46.0 35.7 25.7 15.4 7.4 3.4 1.6 0.9 3000 53.6 46.0 35.7 25.7 15.4 7.4 3.4 1.6 0.9 2000 53.6 46.0 35.7 25.7 15.4 7.4 3.4 1.6 C. 1000 50.7 43.5 33.6 24.0 14.2 6.8 3.1 1.4 0.8 800 49.9 42.7 33.0 23.5 13.9 6.6 3.0 1.3 0.6 600 46.5 39.7 30.4 21.5 12.6 5.8 2.6 1.1 0.5 400 42.4 32.C 27.4 19.2 11.0 5.0 2.2 0.9 0.4 300 39.3 33.4 25.3 17.5 9.9 4.4 1.9 0.8 0.4 200 34.6 29.2 21.9 14.9 8.3 3.5 1.5 0.5 150 31.0 26.0 19.3 13.0 7.1 2.5 1.2 0.4 100 26.8 22.4 16.5 10.9 5.8 2.3 0.9 80 23.9 19.9 14.4 9.4 4.9 1.9 0.7 60 20.3 16.8 12.0 7.7 3.9 1.4 0.5 50 18.0 14.8 1C.•. 6.6 3.3 1.1 40 15.7 12.8 9.0 5.6 2.7 0.9 36 12.8 10.4 7.2 4.3 2.0 0.4 20 9.1 1.3 4.5 2.8 1.3 0.3 10 4.3 3.4 2.1 1.1 0.4 (E1• SOIL LCSS FROM WINO EROSION 16 TENS PEP ACRE PER YEAR JANUARY.198`0 SURFACE - K • 0.7 1 • 134 ILI IV1•• - FLAT SMALL GRAIN RESIDUE 16 PCUNCS PEP ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 IN FEET 8000 37.5 31.8 23.9 16.5 9.3 4.0 1.7 0.6 6000 37.5 31.8 23.9 16.5 9.3 4.0 1.7 0.6 4000 37.5 31.8 23.5 16.5 9.3 4.0 1.7 0.6 3000 37.5 31.8 23.9 16.5 9.3 4.0 1.7 0.2 2000 36.2 30.6 23.0 15.8 8.8 3.8 1.6 0.5 1000 32.6 27.5 20.5 13.8 7.6 3.2 1.3 0.4 800 31.4 26.4 19.6 13.2 7.2 3.0 1.2 0.4 600 28.3 23.7 17.5 11.6 6.2 2.5 1.0 300 21.5 18.1 13.1 8.4 4.4 1.6 0.6 200 18.3 15.1 10.7 6.8 3.4 1.2 150 15.1 12.3 8.6 5.3 2.6 0.8 0.4 1.2 4.3 2.0 0.4 100 12.8 80 11.4 19.2 6.3 3.7 1.7 0.3 60 8.4 6.7 4.5 2.6 1.1 0.2 50 6.8 5.4 3.6 2.0 0.8 40 5.2 4.1 2.6 1.4 0.5 30 4.0 3.2 2.0 1.0 0.4 20 2.5 1.9 1.1 0.5 10 1.1 0.8 C.4 IEI• SOIL LOSS FROM WIND EROSION IN TENS PEP ACRE PEP YEAR JANUARY.1981 C • 40 SURFACE - K • 0.5 I • 134 (LI (V1•• - FLAT SMALL GRAIN RESIDUE IN RCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 26.8 22.4 16.4 10.8 5.8 2.3 0.9 000 26.8 22.4 16.4 10.8 5.8 2.3 0.9 60 00 26.8 22.4 16.4 10.8 5.8 2.1 0.9 4000 25.4 21.2 15.5 10.1 5.4 2.1 0.8 3000 24.6 20.5 14.9 9.7 5.1 2.0 0.7 2000 24.0 19.9 14.1 9.4 4.9 1.9 0.7 1000 20.3 16.8 12.1 7.7 3.9 1.4 0.5 800 19.4 16.0 11.4 7.2 3.7 1.1 600 17.5 14.4 10.2 6.4 3.2 1.1 400 14.8 12.1 8.5 5.2 2.5 C.88 300 13.3 10.E 1.5 4.5 2.2 0.4 200 10.6 8.6 5.8 3.4 1.6 0.3 150 8.5 6.8 4.6 2.6 1.2 0.7 100 6.4 5.1 3.3 1.8 0.7 80 4.8 3.8 2.4 1.3 0.5 60 3.7 2.9 1.8 C.8 50 2.9 1.? 1.4 0.7 40 2.2 1.7 1.0 0.5 30 1.5 1.2 0.6 20 0.9 0.5 10 • NOTE: SCIL LESS FOP VALUES WHERE 'E' IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE MCI SHOWN; CTHER VALUES NOT SHOWN ARE INVALID •• NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EOUIVALEKT. NOT 'V' -4 6- IEI• SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C C . 40 SURFACE - K • 1.0 I • 86 ILI IVI•• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE LN SHEL TEREO DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 34.4 25.0 21.7 14.8 8.2 3.5 1.4 0.5 8000 34.4 29.0 21.7 14.8 8.2 3.5 1.4 C.5 6000 34.4 29.0 21.7 14.B 8.2 3.5 1.4 0.5 4000 34.4 29.0 21.7 14.8 8.2 3.5 1.♦ 0.5 3000 34.2 28.9 21.6 14.7 8.2 3.4 1.4 0.5 2000 32.E 27.6 20.6 13.9 7.7 3.2 1.3 0.4 1000 29.2 24.5 18.1 12.0 6.5 2.6 1.0 800 27.7 23.2 17.0 11.3 6.1 2.4 0.9 600 24.5 20.4 14.5 9.7 5.1 1.9 0.7 400 21.5 17.9 12.9 8.3 4.3 1.6 0.6 300 19.2 15.9 11.3 7.2 3.6 1.3 200 15.6 12.8 9.0 5.5 2.7 0.9 150 13.1 IC.7 7.4 4.4 2.1 0.4 100 10.8 B.7 6.0 3.5 1.6 0.3 80 9.3 7.5 5.0 2.9 1.3 0.3 60 6.6 5.2 3.4 1.9 0.7 50 4.9 3.9 2.5 1.3 0.5 40 4.2 3.3 2.1 1.1 0.4 30 3.1 2.4 1.5 0.7 20 1.8 1.4 0.7 10 0.8 0.5 IEI• SOIL LOSS FROM WIND EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C • 40 SURFACE - R • 0.7 I • 86 IL) (VI•• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 24.1 20.1 14.f 9.5 5.0 1.9 0.7 8000 24.1 20.1 14.6 9.5 5.0 1.9 0.7 6000 24.1 20.1 14.8 9.5 5.0 1.9 0.7 4000 23.5 19.6 14.2 9.2 4.8 1.8 0.7 3000 22.8 19.0 13.7 8.9 4.6 1.7 0.6 2000 21.6 17.9 12.9 8.3 4.3 1.6 0.6 1000 18.0 14.8 10.5 6.6 3.3 1.1 800 17.1 14.0 9.5 6.2 3.1 1.0 600 14.8 12.1 8.4 5.2 2.5 0.8 400 12.8 IC.♦ 7.2 4.3 2.1 0.4 300 11.2 9.0 6.2 3.6 1.7 0.3 200 8.7 7.0 4.7 2.7 1.2 0.2 150 6.5 5.1 3.3 1.8 0.7 100 4.7 3.7 2.3 1.2 0.5 00 3.9 3.0 1.5 0.9 60 2.6 2.0 1.2 0.6 50 1.5 1.5 C.# 40 1.6 1.2 0.7 30 1.1 0.8 0.4 20 0.7 C.4 10 IEI• SOIL LOSS FROM WIND EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 SURFACE - R • 0.5 I • B6 ILI IV)•• - FLAT SMALL GRAIR RESIDUE 11 POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IR FEET 10000 17.2 14.1 10.0 6.2 3.1 1.1 8000 17.2 14.1 10.0 6.2 3.1 1.1 6000 17.2 14.1 10.0 6.2 3.1 1.1 4000 16.0 13.1 9.2 5.7 2.8 0.9 3000 15.1 12.4 8.6 5.3 2.6 0.0 2000 13.8 11.3 7.8 4.8 2.3 0.7 1000 11.5 9.3 6.3 3.8 1.8 0.3 B00 10.4 8.4 5.7 3.3 1.5 C.3 600 8.5 7.1 4.8 2.7 1.2 0.2 400 6.7 •..3 3.5 1.9 0.8 300 5.1 4.0 2.6 1.4 0.5 200 3.8 3.C I.S 0.9 150 2.8 2.1 1.3 0.6 100 1.9 1.4 C.8 80 1.5 1.1 0.f 60 1.0 0.5 50 0.B 0.5 40 0.6 0.4 30 20 10 • NOTE: SOIL LOSS FOR VALUES WHERE 'E' 15 LESS THAN 0.1 CR GREATER THAN 440.0 ARE NCI SHORN: OTHER VALUES NOT SHOWN ARE INVALID •• NCTE: VALUES SHOWN ARE FLAT SMALL GRAIN EOUIVALERT. NCI 'V' -47- 181• SOIL LCSS FROM NINO EROSION IN TONS PEP ACRE PER YEAR JANUARY.I98`0 SURFACE - K . I.C I = 56 ILI 1V)*M - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHFLTERED DISTANCE 0 750 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 22.4 18.6 13.4 8.7 4.5 1.7 0.6 8000 22.4 18.6 11.4 8.7 4.5 1.7 0.6 6000 22.4 18.6 13.4 8.7 4.5 1.7 0.6 4000 21.7 18.0 12.9 8.3 4.3 1.6 0.6 3000 20.9 17.3 12.4 7.9 4.1 1.5 0.5 2000 19.6 16.2 11.6 7.4 3.7 1.3 1000 16.1 13.2 5.3 5.7 2.8 C.9 800 15.0 12.2 8.6 5.2 2.6 0.8 600 13.3 10.5 7.5 4.5 2.2 0.4 400 11.4 9.2 6.? 3.1 1.7 C.3 300 9.8 7.9 5.3 3.1 1.4 0.3 200 7.2 5.7 3.8 2.1 0.8 150 4.9 1.9 2.5 1.3 0.5 100 3.5 3.1 1.5 C.9 80 3.2 2.4 1.5 0.7 60 1.9 1.5 0.8 50 1.6 1.2 C.7 40 1.3 1.0 0.5 30 0.5 0.5 20 10 (EPA SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PER YEAR JANUARYi.198`C 0 SURFACE - K - 0.7 I = 56 ELI IV144 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 SOD 750 1000 1250 1500 1750 2000 2250 2500 2750 1000 IN FEET 10000 15.7 12.8 9.C 5.6 2.7 C.9 8000 15.7 12.8 5.0 5.6 2.7 0.9 6000 15.6 12.8 9.0 5.5 2.7 0.9 4000 14.5 11.9 8.3 5.0 2.4 0.8 3000 13.9 11.3 7.9 4.8 2.3 0.7 2000 12.5 10.2 7.0 4.2 2.0 0.4 1000 10.1 8.1 5.5 3.2 1.5 0.3 800 9.1 7.3 4.9 2.8 1.3 0.3 600 7.6 6.C 4.0 2.2 0.9 400 5.3 4.2 2.7 1.4 0.6 300 4.4 3.5 2.2 1.1 0.4 200 3.2 2.5 1.5 0.7 ISO 2.1 1.6 1.0 0.4 100 1.6 1.2 0.6 80. 1.2 0.9 0.5 60 0.8 C.5 50 0.6 0.4 40 30 20 10 IE14 SOIL LOSS FROM WIND EROSION IN TONS PER ACRE PER YEAR JANUARRY.196 40 SURFACE - M t C.`. 1 = 56 (LI IV)** - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 11.2 9.1 6.2 3.7 1.7 C.3 8000 11.2 9.1 6.2 3.7 1.7 0.3 6000 10.7 8.7 5.9 3.5 1.6 0.3 4000 9.8 7.9 5.3 3.1 1.4 0.3 3000 9.0 7.2 4.8 2.B 1.2 0.3 2000 7.8 6.2 4.1 2.3 0.9 1000 5.0 3.9 2.5 1.3 0.5 B00 4.5 3.5 2.2 1.2 0.4 600 3.7 2.8 1.8 0.8 400 2.7 2.1 1.3 0.6 300 1.9 1.4 0.8 200 1.3 I.C C.5 150 0.9 0.5 100 0.6 0.4 80 60 50 40 30 20 10 • NOTE: SOIL LOSS FOP VALUES WhERE 'E' IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NOT SHOWN; OTHER VALUES NOT SHOWN APE INVALID 44 NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT 'V' -48- Ills SOIL LOSS FROM WIND EROSION IN TCNS PER ACRE PER YEAR JANUARY.1981 C • 40 SURFACE - K • 1.0 1 • 48 ILI (VIS• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 19.2 15.5 11.3 7.2 3.6 1.3 8000 19.2 15.9 11.3 7.2 3.6 1.3 6000 19.2 15.9 11.3 7.2 3.6 1.3 4000 18.1 14.9 10.6 6.6 3.3 1.2 3000 17.2 14.1 10.0 6.2 3.1 1.1 2000 15.8 12.5 9.1 5.6 2.7 C.9 1000 13.2 10.8 7.5 4.5 2.2 0.4 800 12.1 5.8 6.2 4.0 1.9 0.4 600 10.5 8.5 5.8 3.4 1.6 0.3 400 8.6 6.9 4.6 2.6 1.2 0.2 300 7.0 5.6 3.7 2.0 0.8 200 4.7 3.7 2.3 1.2 0.5 150 3.6 2.8 1.1 0.8 100 2.5 1.9 1.2 0.5 80 1.9 1.4 0.8 60 1.3 1.C C.5 50 1.0 0.6 40 0.8 0.5 30 0.5 0.3 20 10 (E14 SOIL LOSS FROM WIND EROSICN IN TENS PER ACRE PER YEAR JANUARY.1981 C • 40 SURFACE - K • 0.7 I • 48 ILI (81.66 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 5CC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IR FEET 10000 13.4 11.0 7.6 4.6 2.2 0.7 8000 13.4 11.0 7.6 4.6 2.2 0.7 6000 13.1 10.6 7.3 4.4 2.1 0.4 4000 12.2 5.9 6.8 4.1 1.9 0.4 3000 11.4 9.2 6.3 3.7 1.7 0.3 2000 10.2 8.2 5.6 3.3 1.5 0.3 1000 7.5 6.0 4.0 2.2 0.9 800 6.6 5.2 3.4 1.9 0.7 600 5.C 3.9 2.5 1.3 0.5 400 4.1 3.2 2.0 1.0 0.4 300 3.3 2.6 1.6 0.7 200 2.0 1.5 0.2 150 1.5 1.1 0.6 100 1.C C.5 80 0.8 0.4 60 50 40 30 20 10 1115 SOIL LOSS FRCM NINE EROSION IN IONS PER ACRE PER YEAR JARUART.1981 C = 40 SURFACE - K . 0.5 I • 48 ILI IV HA - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 150 1000 1250 1500 1750 2CCC 2250 250C 2750 3000 IN FEET 10000 9.6 7.7 5.2 3.0 1.4 C.3 8000 9.t 7.7 5.2 3.0 1.4 0.3 6000 9.0 7.2 4.8 2.8 1.3 C.3 4000 8.1 6.5 4.3 2.5 1.0 3000 7.C 5.5 3.6 2.0 0.8 2000 5.9 4.7 3.0 1.7 0.6 1000 4.1 3.2 2.0 1.0 0.4 800 3.5 2.8 1.7 0.8 600 2.6 2.0 1.7 0.6 400 1.8 1.4 0.7 300 1.4 1.0 0.f 200 0.5 0.5 150 0.6 0.3 100 80 60 50 40 30 20 10 • NOTE: SOIL LOSS FOR VALUES WHERE '2' 15 LESS THAN C.1 OR GREATEP THAN 440.0 ARE NCI SHOWN; OTHER VALUES VOT SHOWN APE INVALID 44 NOTE: VALUES SHChN ARE FLAT SMALL GRAIN EQUIVALENT. NOT iv. -4 9- ID' SOIL LOSS.FROM MINI EPOSICN.IN TENS PER ACRE PER YEAR JANUARY.198`0 SURFACE - K.-. 1.0 I • 36 ILI IV)**- FLA;T SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE G 250 500 750 1004 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 15.2 12.4. 8.7 5.3 2.6 0.9 8000 15.2 12.4 0.7 5.3 2.6 Q.9 6000 15.0 12..3 8.6 5.3 2.6 0.8 4000 14.1 11.5 8.0 4.9 2.4 0.8 3000 13.4 10.9 7.6 4.6 2.2 0.7 2000 12.1 5.9 6.8 4.0 1.9 0.4 1000 9.6 7.7 5.2 3.0 1.4 0.3 0.2 600 7.1 5.7 3.7 2.1 0.8 400 4.9 3.9 2.5 1.3 0.5 300 4.2 3.3 2.1 1.1 0.4 200 3.0 2.3 1.4 0.7 ISO 2.0 1.5 0.8 loo 1.5 1.1 0.6 80 1.1 0.8 0.4 60 0.1 C.4 50 0.5 0.3 40 30 20 10 1E1,1 SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PER YEAR JANUARY.19E1 C 40 SURFACE - K - 0.7 I • 38 1L1 (VI4• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IA FEET 10000 10.6 8.6 5.8 3.4 1.6 0.3 8000 10.2 8.6 5.8 3.4 1.6 0.3 6000 10.1 8.2 5.5 3.2 1.5 0.3 4000 9.2 7.4 5.0 2.9 1.3 0.3 3000 8.2 6.6 4.4 2.5 1.0 2000 7.1 5.6 3.7 2.1 0.8 1000 4.7 3.7 2.3 1.2 0.5 800 4.2 3.3 2.0 1.1 0.4 600 3.3 2.5 1.6 0.7 400 2.3 1.8 1.1 0.5 300 1.7 1.3 0.7 200 1.1 (.8 C.4 150 0.8 0.5 100 80 60 50 40 30 20 10 IE1• SOIL LOSS FROM WIND EROSICA IN TONS PER ACRE PEP YEAR JANUARY.198`0 SURFACE - R • 0.5 I • 38 ILI IV1••- FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE C 25C 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 7.6 2.1 4.0 2.3 0.9 8000 7.5 6.0 4.0 2.2 0.9 6000 6.8 5.4 3.5 2.0 0.8 4000 6.1 4.8 3.1 1.7 0.7 3000 5.0 3.9 2.5 1.3 0.5 2000 4.4 3.5 2.2 1.2 0.4 1000 2.9 2.2 1.4 0.6 800 2.3 1.8 1.1 0.5 600 1.8 1.3 0.7 400 1.2 0.9 0.5 300 0.9 0.5 200 150 100 80 60 50 40 10 20 10 • NOTE: SOIL LOSS PCP VALUES WHERE 'f' IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NOT SHORN; OTHER VALUES NOT SHOWN ARE INVALID •• NOTE: VALUES SHOWN ARE FLAT SPALL GRAIN EQUIVALENT. NOT 'V' -50- 1116 SOIL LOSS FROM WINO FROSICN IN TONS PER ACRE PER YEAR JANUARY.1981 C • 40 SURFACE - R • 1.0 I • 21 ILI 111144 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE U NS HLTEREO DISTANCE 0 250 500 750 1000 1250 1500 IT5C 2000 2250 7500 2750 3000 IN FEET 10000 8.4 6.7 4.5 2.6 1.1 0.2 8000 8.4 6.7 4.5 2.6 1.1 0.2 6000 7.7 6.1 4.1 2.3 e.g 4000 6.9 5.5 3.6 2.0 0.8 3000 5.0 4.5 2.9 1.6 0.6 2000 4.9 3.8 2.4 1.3 0.5 1000 3.3 2.6 1.6 0.8 800 2.8 2.2 I.? 0.6 600 2.0 1.5 0.8 400 1.5 1.1 C.6 300 1.0 0.6 200 0.2 0.4 150 100 80 60 50 40 30 20 !0 1E1,1 SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C • 40 SURFACE - K • 0.7 I - 21 ILI - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 5.5 4.7 3.C 1.6 0.6 8000 5.5 4.4 2.8 1.5 0.6 6000 4.5 3.9 2.5 1.3 0.5 4000 4.6 3.6 2.3 1.2 0.5 3000 4.1 3.2 2.0 1.0 0.4 2000 3.3 2.6 1.6 0.8 1000 1.9 1.5 0.8 800 1.7 1.3 0.7 600 1.2 0.9 0.5 400 0.8 0.5 300 0.2 C.3 200 150 100 80 60 50 40 30 20 10 IE14 SOIL LOSS FROM MIND EROSICA IN TCNS PER ACRE PER YEAR JANUARY.1981 C • 40 SURFACE - K • 0.5 I • 21 ILI IVI44 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 SCC 750 1000 1250 1500 1750 2000 2250 2500 2730 3000 IN FEET 10000 4.2 3.3 2.1 1.1 0.4 8000 4.0 3.2 2.0 1.0 0.4 6000 3.9 3.0 1.9 0.9 4000 3.3 2.5 1.6 0.7 3000 2.9 2.3 1.4 0.6 2000 2.2 1.7 1.0 0.5 1000 1.4 1.0 0.5 800 1.1 0.8 0.4 600 0.0 C.5 400 0.5 0.3 300 200 ISO 100 80 60 50 40 30 20 10 4 NOTE! SOIL LCSS FCP VALUES WHERE !E' IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NCI SHOW; OTHER VALUES NOT SHOWN APE INVALID 'S NOTE! VALUES SHCUN ARE FLAT SMALL GRAIN EQUIVALENT. NOT •V' -51- (EIA SOIL LOSSFPCM NINO EROSION IN IONS PER ACRE PER YEAR JANUARY.1981 C 40 SURFACE - K . .1.0 _ I • 12 ILI IV H4 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 4.E 3.8 2.4 1.3 0.5 8000 4.6 3.6 2.3 1.2 0.5 6000 4.4 3.5 2.2 1.1 0.4 4000 3.9 3.1 1.9 0.9 3000 3.5 2.7 1.7 0.8 2000 2.t 2.1 1.3 0.6 1000 1.6 1.3 0.7 800 1.4 1.0 0.5 600 0.9 0.5 400 0.7 0.4 300 200 I50 100 80 60 50 40 30 20 10 IEI• SOIL LCSS FRCP WINO EROS ICN IN TONS PER ACRE PER YEAR JANUARRT.198.O SURFACE - K • 0.7 I • 12 IL IV1M4 - FLAI SMALL GRAIN RESICUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IA FEET 10000 3.4 2.6 1.6 0.8 8000 3.1 2.4 1.5 0.7 6000 2.9 2.3 1.4 0.7 4000 2.3 1.8 1.1 0.5 3000 2.0 1.5 C.t 2000 1.7 1.3 0.7 1000 I.C 0.6 eoo 0.8 0.5 600 0.6 0.4 400 300 200 ISO 100 80 60 50 40 30 20 I0 IEI• SOIL LOSS FROM WIND EROSION IN IONS PER ACRE PER YEAR JANUARY_19810 SURFACE - K • 0.5 I • 12 ILI IV H4 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 2.4 1.8 1.1 C.5 8000 2.1 1.6 0.9 0.4 6000 1.5 1.5 C.t 4000 1.6 1.2 C.7 3000 1.5 1.1 0.6 2000 1.2 C.S C. 1000 0.8 0.4 800 0.6 0.4 600 400 300 200 150 100 80 60 50 40 30 20 10 4 No LCSS FCR VALUE WHERE E. IS ARE NOT SHOWN: OTHER VALUES NOT S THAN 0.1 CR GREATER THAN SHOWN IRE INVALID 44 NOTE: VALUES SHOWN ARE FLAI SHALL GRAIN EQUIVALENT. NCT 'V• -52- IEI• SOIL LOSS FROM WIND EROSION IN TCNS PER ACPE PER YEAR JANUARY.19t1 C 50 SURFACE - K • 1.C I • 310 (LI IV14• - FLAT SMALL GRAIN RESIDUE IN PCUN05 PER ACRE UNSHELTERED OISTANCE a 250 500 750 1000 1251 1500 1750 7000 2250 7500 2750 3000 IN FEET 10000 155.0 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 0.4 8000 155.0 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 C.4 6000 155.0 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 0.4 4000 155.0 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 0.4 3000 155.0 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 ^_.4 2000 I55.C 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 C.4 1000 155.0 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 0.4 800 155.0 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 0.4 600 155.0 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 0.4 400 155.0 139.1 II7.7 96.9 69.0 46.3 23.5 17.5 12.3 6.0 3.3 0.8 0.4 300 152.5 136.7 115.6 94.9 67.5 45.1 27.1 16.9 11.8 5.7 3.1 0.7 0.4 200 146.7 131.3 110.6 90.4 63.8 42.1 25.1 15.5 10.7 5.1 2.7 0.3 150 141.7 126.6 106.4 86.6 60.8 39.7 23.5 14.3 9.9 4.6 2.4 0.2 100 136.4 121.8 102.0 82.6 57.6 37.2 21.8 13.1 9.0 4.1 2.2 0.2 80 131.1 116.8 57.5 78.5 54.4 34.7 20.1 12.0 8.1 3.7 1.9 0.2 60 121.9 108.7 89.8 71.7 49.1 30.6 17.4 10.2 6.8 3.0 1.5 0.2 50 116.0 (02.8 85.0 61.4 45.8 28.1 15.8 9.1 6.0 2.6 1.3 0.2 40 110.3 97.6 80.3 63.3 42.6 25.8 14.3 8.1 5.3 2.2 1.1 0.2 30 101.3 89.3 71.0 56.9 37.8 22.2 12.1 6.7 4.3 1.7 0.8 0.1 20 87.2 76.4 61.7 ♦7.2 30.6 17.2 9.0 4.8 3.0 1.1 0.4 10 65.0 56.3 44.4 32.7 20.2 10.4 5.0 2.4 1.5 0.5 (F14 SOIL LOSS FRCM WINO EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C • 50 SURFACE - K • 0.7 I • 310 ILI 141.46 - FLAT SMALL GRAIN RESIDUE IN POUNOS PER ACRE UNSHELTERED OtSTANCE 0 750 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 108.5 95.9 78.8 62.0 41.6 25.0 13.9 7.8 5.1 2.1 1.0 0.2 8000 108.5 95.9 78.8 62.0 41.6 25.0 13.9 7.8 5.1 2.1 1.0 0.2 6000 108.5 95.9 78.8 62.0 41.6 25.0 13.9 7.9 5.1 2.1 1.0 0.2 4000 108.5 95.9 78.8 62.0 41.6 25.0 13.9 7.8 5.1 2.1 1.0 0.2 3000 108.5 55.9 78.8 62.0 41.6 25.0 13.9 7.8 5.1 2.1 1.0 0.2 2005 108.5 55.5 78.8 62.0 41.6 25.0 13.9 7.8 5.1 2.1 I.C 0.2 1000 108.5 95.9 78.! 62.0 41.6 25.0 13.9 7.8 5.1 2.1 1.C 0.2 800 105.2 55.6 78.6 61.8 41.5 24.9 13.8 7.8 5.1 2.1 1.0 0.2 600 105.6 93.2 76.4 59.9 40.0 23.9 13.1 7.3 4.8 1.9 0.9 0.1 400 102.6 90.5 14.0 57.8 38.5 22.7 12.4 6.9 4.5 1.8 0.8 0.1 300 99.6 87.8 71.6 55.8 36.9 21.6 11.7 6.4 4.1 1.6 0.8 0.1 200 92.6 81.3 66.0 50.9 33.3 19.0 10.1 5.5 3.5 1.3 0.4 ISO 86.1 7..4 60.8 46.5 30.0 16.8 8.8 4.6 2.9 1.1 0.3 100 79.7 65.6 55.8 42.2 26.9 14.7 7.5 3.9 2.4 0.8 80 74.9 65.2 52.0 39.0 24.6 13.2 6.7 3.4 2.1 0.7 60 67.1 58.1 46.0 34.0 21.1 10.9 5.4 2.6 1.6 0.5 SD 61.! 53.4 41.9 30.7 18.8 9.5 4.6 2.2 1.3 40 57.4 49.4 38.5 28.0 16.9 8.3 3.9 1.8 1.1 30 50.7 43.5 33.6 24.0 14.2 6.8 3.1 1.4 0.8 20 41.3 35.1 26.7 18.6 10.7 4.8 2.1 0.9 0.4 10 27.8 23.3 17.1 11.4 6.1 2.4 0.9 (E1• SOIL LOSS FROM WIND EROSION IN TONS PER ACRE PEP YEAR JANUARY.1981 C • 50 SURFACE - M • 0.5 1 • 310 ILI IV)** - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 77.5 67.6 54.0 40.7 25.9 14.0 1.1 3.6 2.2 0.7 8000 77.5 67.6 54.0 40.7 25.9 14.0 7.1 3.6 2.2 0.7 6000 77.5 67.6 54.0 40.7 25.9 14.0 7.1 3.6 2.2 0.7 4000 77.5 67.6 54.0 40.7 25.9 14.0 7.1 3.6 2.2 0.7 3000 77.5 67.6 54.C 40.7 25.9 14.0 7.1 3.6 2.2 0.7 2000 77.5 67.6 54.0 40.7 25.9 14.0 7.1 3.6 2.2 0.1 1000 15.2 65.5 52.3 39.3 24.8 13.3 6.7 3.4 2.1 0.7 800 73.4 61.9 50.8 38.1 24.0 12.6 6.4 3.7 2.0 0.6 600 70.5 61.6 48.9 36.5 22.8 12.0 6.0 3.0 1.8 0.6 400 66.0 57.2 45.1 33.3 20.6 10.6 5.2 2.5 1.5 0.5 300 61.7 53.3 41.9 30.7 18.8 9.5 4.6 2.2 1.3 200 55.4 47.6 37.0 26.8 16.1 7.9 3.7 1.7 1.0 ISO 50.4 43.2 33.4 23.8 14.1 6.7 3.1 1.4 0.8 100 45.3 38.6 29.6 20.8 12.1 5.6 2.5 1.1 0.5 80 41.0 34.8 26.4 18.4 10.5 4.7 2.0 0.5 0.4 60 35.8 30.3 22.7 15.5 8.7 3.7 1.6 0.5 50 32.! 27.6 20.6 13.9 7.7 3.2 1.3 C.4 40 29.8 25.1 18.5 12.4 6.7 2.7 1.1 30 24.4 20.3 14.8 9.6 5.1 1.9 0.7 20 19.1 15.8 11.3 7.1 3.6 1.3 10 11.7 9.5 6.5 3.9 1.8 0.4 4 NOTE: SOIL LOSS FOP VALUES WHERE 'E' IS LESS THAN 0.1 CR GREATER THAN 440.0 ARE NET SHOWN: OTHER VALUES NOT SHOWN APE INVALID •4 NOTE: VALUES SHOWN ARE FIAT SMALL GRAIN EQUIVALENT. NCT 'V' -53- f (EPA SOIL LOSS FROM WINO EROSION IN TCNS PER ACRE PER YEAR JANUACY•1981 50 SURFACE --N • 1.0 1 • 250 ILI IV19P - FLAT SMALL -GRAIN RESIDUE IN POUNDS PEP ACRE UNSHELTERED DISTANCE 0 250 -500 .150 1000 1250 1500 1150 2000 2250 2500 2750 3000 IN FEET 10000 125.0 111.1 92.4 74.0 '50.9 32.0 18.3 10.8 1.2 3.2 1.6 0.2 8000 125.0 111.1 92.4 74.0 50.9 32.0 18.3 10.8 7.2 3.2 1.6 0.2 6000 125.0 111.1 92.4 74.0 50.9 32.0 18.3 10.8 1.2 3.2 1.6 0.2 4000 125.0 111.1 92.4 74.0 50.9 32.0 18.3 10.8 7.2 3.2 1.6 0.2 1000 125.C 111.1 52.4 74.0 50.9 32.0 18.3 10.8 7.2 3.2 1.6 0.2 2000 125.0 111.1 92.4 74.0 50.9 32.0 18.3 10.8 7.2 3.2 1.6 0.2 1000 125.0 111.1 92.4 74.0 50.9 -32.0 18.3 10.8 7.2 3.2 1.6 0.2 800 125.0 111.1 92.4 74.0 50.9 32.0 18.3 10.8 7.2 3.2 1.6 0.2 600 125.0 111.1 52.4 74.0 50.9 32.0 18.3 10.8 7.2 - 3.2 1.6 0.2 400 121.3 107.7 89.4 71.3 48.8 30.3 .11.3 10.0 6.7 2.9 1.5 0.2 300 117.9 104.6 86.6 68.8 46.8 28.9 16.3 9.4 6.3 2.7 1.3 0.2 200 111.5 98.6 81.3 64.1 43.3 26.2 14.6 9.3 5.5 2.3 1.1 0.2 150 106.0 93.6 76.8 60.3 40.3 24.0 13.2 7.4 4.4 2.C 0.5 0.1 100 100.5 08.9 72.1 56.6 31.6 22.1 12.0 6.6 4.3 1.7 0.8 0.1 80 95.3 83.8 68.1 52.1 34.6 20.0 10.1 5.8 3.7 1.4 0.4 60 86.2 76.0 61.4 46.9 30.4 17.0 8.9 4.7 3.0 1.1 0.3 50 80.6 IC.3 56.4 42.8 27.3 15.0 7.7 4.0 2.5 C.5 0.3 40 15.3 65.6 52.3 39.3 24.9 13.3 6.7 3.4 2.1 0.1 30 66.6 57.7 45.6 33.7 20.9 10.8 5.3 2.6 1.5 C.5 20 56.0 48.2 37.5 27.2 16.4 8.0 3.8 1.7 1.0 10 38.8 32.9 24.5 17.2 9.8 4.3 1.8 0.6 0.3 (11+ 9L! 2533 FR,CN MJNO EROSION 14 TONS PER ACRE PEP YEAR JANUARYjl981 SURFACE - K • 0.7 I • 250 ILI (VI4• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1150 2000 2250 2500 2750 3000 IN FEET 0.4 10000 87.5 76.7 61.5 47.4 30.7 17.3 9.1 4.! 3.0 1.1 8000 81.5 76.7 61.9 47.4 30.1 17.3 9.1 4.1 3.0 1.1 0.4 6000 87.5 16.7 61.9 47.4 30.7 17.3 9.1 4.8 3.0 1.1 0.4 4000 87.5 76.7 61.5 47.4 30.7 17.3 9.1 4.8 3.0 1.1 0.4 3000 81.5 76.7 61.9 41.4 30.7 17.3 9.1 4.8 3.0 1.1 0.4 2000 87.5 76.7 61.9 41.4 30.7 11.3 9.1 4.8 3.0 1.1 0.4 1000 86.2 75.5 60.9 46.6 30.1 16.8 8.6 4.6 2.9 1.1 0.3 8O0 84.0 73.5 59.2 45.1 29.0 16.1 8.4 4.4 2.7 1.0 0.3 800 81.7 71.4 57.3 43.5 27.9 15.3 7.9 4.1 2.5 C.9 0.3 .400 71.3 67.4 51.9 40.6 25.8 13.9 7.1 3.t 2.2 0.7 300 T3.6 -64.1 51.0 38.2 24.1 12.8 6.4 3.2 2.0 0.6 200 67.4 58.4 46.2 34.2 21.2 11.0 5.4 2.7 1.6 0.5 150 60.7 52.4 41.1 30.0 18.3 9.2 4.4 2.1 1.2 100 55.6 47.8 37.2 26.9 16.2 1.9 3.7 1.7 1.0 80 51.5 44.5 34.4 24.7 14.7 7.0 3.2 1.5 0.8 60 45.2 39.6 29.5 20.8 12.1 5.5 2.5 1.1 0.5 50 41.2 35.0 26.6 18.5 10.6 4.7 2.0 0.5 0.4 40 37.1 31.9 24.0 16.6 9.3 4.1 1.7 0.6 30 33.9 28.6 21.4 14.5 8.1 3.4 1.4 0.5 20 24.9 20.8 15.1 9.9 5.2 2.0 0.8 10 16.2 13.3 9.3 5.8 2.9 1.0 (EIS SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PEP VESA JANUARYal9A50 SURFACE - K • 0.5 I • 250 ILI MSS - FLAT SMALL GRAIN RESIDUE IN POUNCS PEP ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750. 2000 2250 2500 2750 3000 IN FEET 10000 62.5 54.0 .42.4 31.1 19.1 9.7 4.7 2.2 - 1.3 8000 62.5 54.0 42.4 31.1 19.1 9.1 4.7 2.2 1.3 6000 62.5 54.0 42.4 31.1 19.1 9.7 4.7 2.2 1.3 4000 62.5 54.0 42.4 31.1 19.1 9.7 4.7 2.2 1.3 3000 62.5 54.0 42.4 31.1 19.1 9.7 4.1 2.2 1.3 2000 61.9 53.5 42.0 30.8 18.8 9.5 4.6 2.2 1.3 1000 58.3 50.3 39.3 28.6 17.3 8.6 4.1 1.9 1.1 800 56.7 48.8 36.0 27.6 16.6 8.2 3.8 1.8 1.0 600 53.4 45.9 35.6 25.6 15.3 7.4 3.4 1.6 0.9 400 49.2 42.1 32.5 23.1 13.6 6.4 2.9 1.3 0.6 300 45.7 39.0 29.9 21.1 12.3 5.6 2.5 1.1 0.5 200 40.0 34.0 25.7 11.8 10.2 4.5 1.9 0.! 0.4 150 35.8 30.1 22.7 15.5 8.7 3.1 1.6 0.5 100 32.C 27.0 20.1 13.5 7.4 3.1 1.2 0.4 80 28.9 24.2 .11.9 11.9 6.4 2.6 1.0 60 23.7 19.8 14.3 9.3 4.9 1.8 0.7 SO 21.7 18.0 12.9 8.3 4.3 1.6 0.6 40 19.6 16.2 11.5 7.3 3.7 1.3 30 15.7 12.8 9.0 5.5 2.7 0.5 20 11.9 9.7 6.2 4.0 1.9 0.4 10 6.3 5.0 3.3 1.8 0.7 THAN 0.1 OR• NOTE: SOI 44 . EOSS FOR VALUES WBERE 'E. is S ARE NCT SHOWN: ETHER VALUES NOT SHOWN ARE INVALID ER THAN 00 •• NCTE= VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT •V, -54- 1E/4 SOIL LOSS FROM WIND EROSION Ih TCNS PER ACRE PER YEAR JANUARY.1981 C • 50 SURFACE - K . 1.0 I . 220 ILI (VI*. - FLAT SMALL GRAIR RESIDUE IN PCUNC5 PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 110.0 97.3 80.1 63.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 8000 110.0 97.3 80.1 63.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 6000 110.0 97.3 80.1 63.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 4000 110.0 57.3 80.1 23.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 3000 110.0 97.3 80.1 63.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 2000 110.C 97.3 80.1 63.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 1000 110.0 97.3 80.1 63.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 800 110.C 97.3 80.1 63.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 600 107.4 94.9 78.C 61.3 41.1 24.6 13.6 7.6 5.0 2.0 1.0 0.1 400 104.9 92.6 75.9 59.4 39.7 23.6 13.0 7.2 4.7 1.9 0.9 0.1 300 101.8 89.7 73.4 57.3 38.0 22.4 12.2 6.8 - 4.4 1.7 0.8 0.1 200 95.1 83.6 68.0 52.6 34.6 20.0 10.7 5.8 3.7 1.4 0.4 ISO 88.5 77.9 23.0 48.4 31.4 17.7 9.3 5.0 3.1 1.2 0.4 100 82.8 72.4 58.2 44.2 28.4 15.7 8.1 4.2 2.6 1.0 0.3 80 77.3 67.4 5?.9 40.6 25.8 13.9 7.1 3.6 2.2 0.7 63 69.0 59.9 47.4 35.2 21.9 11.5 5.7 2.8 1.7 0.5 SO 63.7 55.1 43.4 31.9 19.6 10.0 4.9 2.3 1.4 40 58.5 50.8 39.7 28.9 17.5 8.7 4.1 2.0 1.1 30 52.2 44.8 34.7 24.9 14.8 7.1 3.3 1.5 0.8 20 42.7 32.3 27.7 19.4 11.1 5.0 2.2 0.5 0.4 10 28.9 24.2 17.9 11.9 6.♦ 2.6 1.0 IF). SOIL LOSS FROP WINO EROSION IN TCNS PER ACRE PEP YEAR JANUARY.1581 C . 50 SURFACE - K . 0.7 7 = 220 ILI 1914. - FLAT SMALL GRAIN RESIDUE IN PCUNOS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 25C0 2750 3000 11. FEET 10000 77.C 67.1 53.6 40.4 25.6 13.5 7.0 3.6 2.2 0.7 8000 77.0 67.1 53.6 40.4 25.6 13.9 i.e 3.6 2.2 0.7 6000 77.0 67.1 53.6 40.4 25.6 13.9 7.0 3.6 2.2 0.7 4000 77.0 67.1 53.6 40.4 25.6 13.9 7.0 3.6 2.2 0.7 3000 77.0 67.1 53.2 40.4 25.6 13.9 7.0 3.6 2.2 0.7 2000 77.0 67.1 53.6 40.4 25.6 13.9 7.0 3.6 2.2 0.7 1000 74.7 65.1 51.9 38.9 24.6 13.2 6.6 3.4 2.0 0.7 800 72.9 61.4 50.5 37.8 23.7 12.6 6.3 3.2 1.9 0.6 600 70.4 61.1 45.5 36.1 22.6 11.9 5.9 2.9 1.8 C.6 400 65.4 56.6 44.7 33.0 20.3 10.5 5.1 2.5 1.5 0.5 300 61.0 52.7 41.3 30.2 18.4 5.3 4.4 2.1 1.2 200 54.5 47.2 36.7 26.5 15.9 7.7 3.6 1.7 1.0 150 49.9 42.7 33.0 23.5 13.9 6.6 3.0 1.3 0.6 100 44.7 38.2 29.2 20.5 11.9 5.4 2.4 1.C 0.5 80 40.4 34.3 26.0 18.1 10.3 4.6 2.C C.6 0.4 60 35.3 29.8 72.4 15.3 6.5 3.6 1.5 C.5 50 32.4 27.3 20.3 13.7 7.6 3.1 1.3 0.4 40 29.4 24.7 18.2 12.2 6.6 2.7 1.0 30 24.0 20.0 14.5 9.5 5.0 1.9 0.7 20 18.8 15.5 11.0 7.0 3.5 1.2 10 11.5 9.3 6.4 3.8 1.8 0.3 IE1. SOIL LCSS FPCM WINO EROSICN IN TCNS PER ACRE PER YEAR JANUARY.1981 C = 50 _ SURFACE - K . 0.5 I = 22C ILI IV144 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 55.0 47.3 32.8 26.6 15.9 7.8 3.6 1.7 1.0 8000 55.0 47.3 36.8 26.6 15.9 7.8 3.6 1.7 1.0 6000 55.0 47.3 36.8 26.6 15.9 7.8 3.6 1.7 1.0 4000 55.C 47.3 36.8 26.6 15.9 7.8 5.6 1.7 1.0 3000 55.0 47.3 36.8 26.6 15.9 7.8 3.6 1.7 1.0 2000 53.9 46.3 35.9 25.9 15.5 7.5 3.5 1.6 0.9 1000 49.4 42.3 32.6 23.2 13.7 6.5 7.9 1.3 0.6 800 47.7 40.8 31.3 27.2 13.0 6.1 2.7 1.2 0.5 600 44.C 37.5 28.7 20.1 11.6 5.3 2.3 1.0 0.5 400 39.8 33.8 25.6 17.8 10.1 4.5 1.9 0.8 0.4 300 36.7 31.1 23.4 16.0 9.0 3.9 1.6 0.6 200 31.2 26.7 15.9 13.4 7.4 3.0 1.2 0.4 150 27.7 23.2 17.0 11.3 6.1 2.4 0.9 100 23.9 19.9 14.4 9.4 4.9 1.9 0.7 PO 21.6 17.9 12.5 8.3 4.3 1.6 0.6 60 17.9 14.8 IC.5 6.6 3.3 1.1 50 15.5 12.7 8.9 5.5 2.7 C.S 40 13.7 11.2 7.8 4.7 2.3 0.7 30 11.1 9.0 6.1 3.6 1.7 0.3 70 7.6 6.0 4.0 2.2 0.9 10 3.6 7.8 1.7 0.8 • NOTE: SOIL LOSS FOR VALUES WHERE 'E• IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NCI SHOWN: CTNER VALUES NOT SHOWN IRE INVALID .. NOTE: VALUES SHOWN ARE FLAT SHALL GRAIN EQUIVALENT. NOT 'V' -55- (E18 SOIL LOSS FPCM WINO EROSION IN TONS PER ACRE PEP YEAR JANUARY.-1581 = 180 SURFACE - K = 1.0 ILI (VIA* -FLAT SMALL GRAIN R ESIOVE IN P CUNLS-PEA ACRE UNSHELTERED 250 500 750 -1000 1250 1500 Inc 2000 2250 2500 2750 3000 DISTANCE C IN FEET 18000 90.0 70.9 63.9 49.1 32.0 18.1 9.6 5.1 3.2 1.2 0.4 4000 90.0 78.9 63.5 49.1 32.0 10.1 9.6 5.1 3.2 1.2 0.4 2000 90.0 18.9 63.5 49.1 32.0 18.1 9.6 5..1 3.2 1.2 0.4 1800 87.2 76.4 61.1 47.2 30.6 17.2 9.0 4.6 3.0 1.1 0.4 0.3 400 79.5 69.4 55.6 42.1 26.8 14.7 1.5 3.9 2.4 0.8 200 70.5 61.2 40.5 36.2 22.6 11.9 5.9 2.9 1.8 0.6 150 64.0 55.4 43.6 32.1 19.7 10.1 4.9 2.4 1.4 100 58.1 50.1 39.1 28.5 17.2 8.5 4.0 1.9 1.1 80 54.4 46.6 36.4 26.2 15.7 7.6 3.6 1.6 0.5 60 48.1 4 1.1 31.6 22.5 13.2 6.2 2.8 1.2 0.5 40 39.7 33.7 25.5 17.7 10.1 4.4 1.9 0.8 0.4 0.5 20 26.6 22.2 16.3 10.7 5.7 2.2 0.9 10 17.2 14.1 10.0 6.2 3.1 1.1 1014 SOIL LOSS FRCP MIND EROSION IN IONS PER ACRE PEP YEAR JANUAPP `Y.19850 ( = I8C SURFACE - 0.7 ILI (vie* - FIAT SMALL GRAIN RESIDUE IN POUhC5 PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 .1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 63.0 54.5 42.0 31.5 19.3 9.8 4.7 2.3 1.3 8000 63.0 54.5 42.8 31.5 19.3 9.8 4.1 2.3 1.3 6000 63.C 54.5 42.8 31.5 19.3 9.8 4.7 2.3 1.3 4000 63.0 54.5 42.6 31.5 19.3 9.8 4.7 2.3 1.3 3000 63.C 54.5 42.0 31.5 19.3 9.9 4.7 2.3 1.3 2000 62.5 54.0 42.4 31.1 -19.1 5.7 4.1 2.2 1.3 1000 58.0 50.7 39.6 28.9 17.5- 8.7 4.1 1.9 1.1 000 57.3 49.4 30.5 28.0 16.9 8.3 3.9 1.8 1.1 600 54.0 46.4 36.1 26.0 15.5 7.5 3.5 1.6 0.9 400 49.9 42.8 33.0 23.5 13.9 6.6 3.0 1.3 0.6 300 46.4 35.6 30.4 21.5 12.5 5.6 2.6 1.1 0.5 200 40.1 34.6 26.2 18.2 - 10.4 4.6 2.0 0.6 0.4 150 36.4 30.8 23.1 15.9 8.9 3.8 1.6 C'.5 100 32.6 27.4 20.4 13.8 7.6 3.2 1.3 0.4 60 29.5 24.7 18.3 12.2 6.6 2.7 1.0 60 24.1 20.1 14.E 9.5 5.0 LS 0.1 50 22.C 19.3 13.2 8.5 4.4 1.6 0.6 40 20.0 IE.5 11.8 7.5 3.8 1.4 30 16.0 13.1 5.2 5.1 2.8 0.9 20 12.2 5.9 6.6 4.0 1.9 0.4 10 6.5 5.7 3.4 1.9 0.7 1014 SOIL LOSS FROM WIND EROSION IN TCNS PEP ACRE PER YEAR JANUARY,-I581 SURFACE - 8 = 0.5 I = 180 ILI (VI* - FLAT SMALL GRAIN RESIDUE IN POUNCS PER ACRE UNSHELTERED 5000 DISTANCE 0 250 SOC 750 1000 12550 1500 1750 2000 2250 2500 2750 IN FEET 10000 45.0 36.4 25.4 20.7 12.0 5.5 2.4 1.1 0.5 8000 45.0 36.4 29.4 20.7 12.0 5.5 2.4 1.1 0.5 6000 45.0 36.4 25.4 20.7 12.0 5.5 2.4 1.1 0.5 4000 45.C 38.4 29.4 20.7 12.0 5.5 2.4 1.1 0.5 3000 45.C 38.4 29.4 20.7 12.0 5.5 2.4 1.1 0.5 2000 43.1 36.7 20.0 19.6 11.3 5.1 2.2 1.0 0.4 1000 38.4 32.6 24.6 17.0 9.6 4.2 1.8 C.7 0.3 800 37.0 31.4 23.6 16.2 9.1 3.9 1.1 0.6 609 33.5 28.6 21.4 14.5 8.1 3.4 1.4 0.5 400 29.0 25.1 16.5 12.4 6.7 2.7 1.1 300 26.3 22.0 16.1 10.6 5.6 2.2 0.8 200 22.3 12.5 13.4 0.6 4.5 1.1 0.6 150 19.1 15.6 11.3 7.1 3.6 1.3 100 15.5 13.0 9.1 5.6 2.8 0.9 R0 14.2 11.6 6.1 4.9 2.4 0.8 60 11.3 9.1 8.2 3.7 1.1 0.3 50 9.6 7.7 5.2 3.0 1.4 0.3 40 7.9 8.3 4.2 2.4 0.9 30 5.3 4.2 2.7 1.4 0.6 20 3.1 2.8 1.8 0.8 10 1.6 1.2 0.6 THAN 0.1 CR• NOIEE SOIL ARE NCI SHOWN; OTHER VALUES NOTE GREATER THAN SHOWN ARE INVALID f4 NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT 'V' -56- 1114 SOIL LOSS FFCM NINO EROSION IN TCNS PER ACRE PER YEAR JANUARY.15$I C C . 50 SURFACE - K • 1.0 I • 160 ILI (V144 - FLAT SPALL GRAIA RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 25(0 2750 3000 IN FEET 10000 80.0 65.8 56.0 42.4 27.1 14.8 7.6 3.5 2.4 0.8 8000 80.0 69.8 56.0 42.4 27.1 14.8 7.6 3.9 2.4 1.8 6000 80.0 65.8 56.0 42.4 27.1 14.8 7.6 3.9 2.4 0.8 4000 80.0 65.8 56.0 42.4 27.1 14.8 7.6 3.5 2.4 0.8 3000 80.0 69.8 56.0 42.4 27.1 14.8 7.6 3.9 7.4 0.8 2000 80.C 65.8 56.C 42.4 27.1 14.8 7.6 3.9 2.4 0.8 1000 77.7 67.8 54.2 40.9 26.0 14.1 1.2 3.7 2.3 C.8 800 75.9 66.1 52.8 39.7 25.1 13.5 6.3 3.5 2.1 C.7 600 13.6 64.1 51.0 38.2 24.1 12.8 6.4 3.2 2.0 0.6 40] 69.C 59.9 47.4 35.2 21.9 11.5 5.7 2.8 1.7 0.5 300 65.5 56.7 44.7 33.0 20.4 10.5 5.1 2.5 1.5 0.5 200 51.5 44.8 38.9 28.2 17.1 8.5 4.0 1.9 1.1 ISO 53.0 45.5 35.2 25.3 15.1 7.3 3.4 1.5 0.9 100 48.1 41.1 31.6 22.5 13.2 6.2 2.8 1.2 0.5 50 43.8 31.4 28.5 70.0 11.6 5.3 2.3 1.0 0.4 60 38.1 32.3 24.4 16.8 9.5 4.1 1.8 0.6 53 34.1 29.3 22.C 15.0 8.3 3.5 1.5 0.5 43 31.8 26.7 19.9 13.4 1.4 3.0 1.2 0.4 3J 26.6 22.2 16.3 10.1 5.7 2.2 0.9 70 20.8 17.3 12.4 1.9 4.1 1.5 0.5 10 12.9 10.5 1.2 4.3 2.1 0.4 (E14 SOIL LOSS FROM MIND EROSION IN TENS PER ACPE PER ;OAP JANUARY:2RM C • 50 SURFACE - K • 0.1 1 • 160 ILI (VIP* - FLAT SPOIL GRATA RESIDUE IA PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 S00 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 56.0 48.2 31.5 27.2 16.3 8.0 3.8 1.7 1.0 8000 56.0 49.2 31.5 27.2 16.3 8.0 3.8 1.7 1.0 6000 56.C 48.2 37.5 27.2 16.3 8.0 3.8 1.7 1.0 4000 56.0 48.2 37.5 27.2 16.3 8.0 3.8 1.7 1.0 3000 56.0 48.2 31.5 27.2 16.3 8.0 3.8 1.1 1.0 2000 54.9 47.2 36.7 26.5 15.9 7.1 3.6 1.7 I.C 1000 50.7 43.5 33.6 24.0 14.2 6.8 3.1 1.4 0.8 800 48.8 41.8 32.2 22.9 13.5 6.3 2.9 1.3 0.6 600 45.3 38.7 29.6 20.9 12.1 5.6 2.5 1.I 0.5 400 41.0 34.8 26.5 18.4 10.5 4.7 2.0 0.4 0.4 300 37.7 32.0 24.1 16.6 9.4 4.1 1.1 C.6 200 32.8 27.6 20.6 13.9 7.7 3.2 1.3 0.4 ISO 28.5 24.2 17.9 11.9 6.4 2.6 1.0 100 24.6 20.5 14.9 9.7 5.1 2.0 0.7 80 22.4 19.6 13.4 8.7 4.5 1.7 0.6 60 18.7 15.5 11.0 6.9 3.5 1.2 50 16.4 13.5 9.5 5.9 2.9 1.0 40 14.3 II.? 8.2 5.0 2.4 0.8 30 11.8 9.5 6.5 3.9 1.8 0.4 20 8.2 6.6 4.4 2.5 1.0 10 3.5 3.0 1.5 0.9 (818 SOIL LOSS FROM MIND EROSION IN TONS PER ACRE PER YEAR JANUARY.1S81 C = 50 SURFACE - A • 0.5 1 • l6C ILI (Y)4* - FLAT SMALL GRAIN RESIDUE IA PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IM FEET 10000 40.0 34.0 25.1 17.8 10.2 4.5 1.9 C.8 0.4 8000 40.0 34.0 25.7 11.8 10.2 4.5 1.9 0.8 0.4 6000 40.0 34.0 25.7 17.8 10.2 4.5 1.9 0.8 0.4 4000 40.0 34.0 25.7 11.8 10.2 4.5 1.9 0.8 0.4 3000 39.4 33.4 25.3 17.5 9.9 4.4 1.9 0.8 0.4 2000 37.7 31.9 24.0 16.6 9.3 4.1 1.1 0.6 1000 33.9 28.6 21.4 14.5 6.1 3.4 1.4 0.5 800 32.6 27.4 20.4 13.8 7.6 3.2 1.3 C.4 600 29.5 24.8 18.3 12.2 6.6 2.7 1.1 400 25.3 21.1 15.4 10.1 5.3 2.1 0.8 300 22.5 19.0 13.8 8.9 4.6 1.7 0.6 200 19.6 16.2 11.5 7.3 3.7 1.3 150 16.2 13.3 9.3 5.8 2.9 1.0 100 13.5 11.0 7.6 4.6 2.2 0.7 80 11.7 9.5 6.5 3.8 1.8 0.4 60 9.1 1.3 4.9 2.8 1.1 0.3 50 7.4 5.9 3.9 2.2 0.9 40 5.6 4.4 2.8 1.5 0.6 30 4.3 3.4 2.1 1.1 C.4 20 2.7 2.1 1.3 0.6 10 1.2 0.9 0.5 • NOTE: SOIL LOSS FOR VALUES WHERE •E• IS LESS THAN C.1 CR GREATER THAN 440.0 ARE ACT SHOWN: OTHER VALUES NOT SHOWA ERE INVALID 44 NOTE: VALUES SFCMN ARE FLAT SMALL GRAIN EQUIVALENT. NCI •V• -57- 1E14 SOIL LOSS PROP WINO EROSION IN TCNS PER ACPF PER YEAR JANUARC -V.19850 I • 134 SURFACE - M • LO 1U IyJ•• - FLAT SHALL GRAIN RESIDUE M PCUNCS PER ACRE VNDIISTANCEO DISTANCE 0 250 300 750 1000 1250 1500 115[ 2000 2250 2500 2150 3000 IN FEET 1 p000 61.0 50.1 45.9 34.0 21.1 10.9 5.4 2.6 1.6 0.5 6000 67.0 58.1 45.5 34.0 21.1 10.9 5.4 '.6 1.6 C.5 3000 67.0 58.1 45.9 34.0 21.1 IC.5 5.4 2.6 1.6 0.5 10.5 6.5 1301 63.1 54.6 42.9 31.5 19.3 9.8 4.8 2.3 1 3 803 62.C 51.6 42.1 30.8 18.9 9.5 4.6 2.2 1.3 601 58.2 50.1 39.2 28.5 17.3 8.6 4.1 1.5 1.1 300 51.2 4?.5 33.5 24.3 14.4 6.9 3.1 1.4 0.8 200 45.3 38.1 25.6 20.9 12.1 5.6 2.5 1.1 0.5 150 40.2 34.1 25.8 17.9 10.2 4.5 1.9 0.8 0.4 1P) 32.8 21.6 20.6 13.9 7.7 3.2 1.3 0.4 60 27.8 23.3 17.1 11.3 6.1 7.4 0.9 5) 24.6 20.5 14.5 5.7 5.1 2.0 0.7 49 22.4 18.6 13.4 8.7 4.5 1.7 0.6 30 18.6 15.3 10.5 6.9 3.5 1.2 7O 13.8 11.3 7.8 ♦.7 2.3 0.7 10 8.0 6.4 4.2 2.4 1.0 1E1s SOIL LOSS FRCP WINO ER051CN IN TCNS PFR ACRE PEP TEAR JANUARY.I5850 SURFACE - W • 0.7 I • 134 ILI Mss - FLAT SMALL GRAIN RESIOUE IN PCUNOS PEP ACRE UNSNELTEREO DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10009 46.9 40.1 30.8 21.8 12.7 5.9 2.6 1.2 0.5 8000. 46.5 40.1 30.8 21.8 12.7 5.9 2.6 1.2 0.5 6000 46.5 40.1 30.8 21.8 12.7 5.9 - 2.6 1.2 0.5 4000 46.9 40.1 30.8 21.8 12.7 5.9 2.6 1.2 0.5 3000 46.5 40.1 30.8 21.8 12.7 5.9 2.6 1.2 0.5 2000 45.3 38.6 25.6 20.8 12.1 5.6 2.5 1.1 0.5 1000 40.4 34.3 26.0 18.1 10.3 4.6 2.0 0.6 0.4 600 38.9 31.0 24.9 11.2 9.8 4.3 1.8 C.8 0.3 600 35.6 30.1 22.6 15.5 8.6 3.7 1.5 C'.5 400 31.8 26.1 19.9 13.4 1.4 3.0 1.2 0.4 300 28.5 23.9 17.6 11.7 6.3 2.5 1.0 200 23.8 19.8 14.4 9.3 4.9 1.8 0.7 ISO 20.7 11.1 12.3 1.8 4.0 1.5 C.5 100 17.4 14.3 IC.2 6.3 3.2 1.1 60 15.4 12.6 8.8 5.4 2.7 0.9 60 12.3 50 10.6 18.6 5.8 3.4 1.6 0.3 40 9.C 1.2 4.9 2.8 1.3 0.3 30 6.6 5.2 3.4 1.9 0.7 20 4.1 3.2 2.C 1.1 0.4 i8 i.S ..t £.7 .., .... IE1s SOIL LOSS FPCM WINO EROSION IN TCNS PER ACRE PER YEAR JANUART?1585C 0 SURFACE - K • 0.5 I • 134 1L1 IVIs - FLAT SMALL GRAIN RESIDUE IN POUNDS PEP ACRE UNSNELTFREF DISTANCE 0 250 5CC 750 1000 1250 150O 1150 2000 2250 2500 2750 3000 IN FEET 10009 33.5 28.3 21.1 14.3 7.9 3.3 1.4 0.5 0000 33.5 28.3 21.1 14.3 7.9 3..3 1.4 O.5 6003 33.`. 29.3 21.1 14.3 7.9 3.3 1.4 0.5 4000 32.4 21.2 20.3 13.7 7.5 3.1 1.3 0.4 3000 31.5 26.5 19.7 13.3 7.3 3.0 1.2 0.4 2000 30.0 25.7 15.1 12.8 7.0 2.0 1.1 0.4 1003 25.2 21.0 15.3 10.0 5.3 2.0 0.8 800 24.2 20.2 14.7 9.5 5.0 1.5 0.1 600 22.3 11.6 13.4 8.6 4.5 1.7 0.6 400 19.1 16.3 11.6 7.4 3.8 1.3 300 17.5 14.4 10.2 6.4 3.2 1.1 200 14.1 11.5 0.0 4.9 2.4 0.8 ISO 11.9 9.7 6.6 4.0 1.9 0.4 101 9.8 7.9 5.3 3.1 1.4 C.3 80 9.0 6.4 4.2 2.4 1.0 60 5.3 4.2 2.1 1.4 0.6 50 4.4 3.5 2.2 1.1 0.4 40 3.7 2.9 1.P 0.9 10 2.4 1.9 1.1 0.5 20 1.5 1.1 0.6 10 • NCTF: µ0. L0 ARE NOT SHOWN; CTNER VALUES NOT 51401.11 THAN 0.1 CR GREATER THAN 51401.11 APE INVALID s NCIFI VALUES SHOWN ARE FIAT SMALL GRAIN EOUIVALEAT. NCT .V' -58- (F14 SOIL LOSS FROM NINO EROSION IN IONS PER ACRE PER YEAR JANUAR...1981 C . 50 SURFACE - K • 1.0 I . 66 ILI IV H4 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE C 750 500 750 1000 I25C 1500 1750 2000 2250 2500 2150 3000 IN FEET 10000 43.0 36.6 27.5 19.5 11.3 5.1 2.2 I.C 0.4 P000 43.0 36.6 27.9 19.5 11.3 5.1 2.2 1.0 0.4 600O 43.C 36.6 27.5 19.5 11.3 5.1 2.2 1.C 0.4 4000 43.0 36.6 27.9 19.5 11.3 5.1 2.2 1.e 0.4 7009 42.7 34.3 27.7 19.4 11.1 5.0 2.2 0.5 0.4 2000 40.7 34.6 26.2 18.2 10.4 4.6 2.0 0.8 0.4 1000 36.6 30.9 23.3 16.0 9.0 3.9 1.6 0.5 800 35.1 29.6 22.2 15.2 8.5 3.6 1.5 C.5 600 32.2 27.1 20.2 13.6 7.5 3.1 1.3 0.4 400 23.0 23.5 17.3 11.5 6.2 2.4 1.0 3C0 24.7 20.6 15.0 9.8 5.2 2.0 0.7 209 21.2 17.6 12.6 8.1 4.2 1.5 0.5 150 10.0 14.8 10.5 6.6 3.3 1.1 IOn 14.8 12.1 8.4 5.2 2.5 0.8 80 13.2 10.8 7.4 4.5 2.1 0.4 60 10.4 3.4 5.7 3.3 1.5 C.3 50 8.7 7.0 4.7 2.7 1.2 C.2 40 7.0 5.5 3.6 2.0 0.8 30 4.E 3.8 2.♦ 1.3 0.5 20 3.3 2.5 1.6 0.7 ID 1.4 1.1 0.6 1114 SOIL LOSS FROM WINO FROSICN IN TENS PER ACRE PER YEAR JANUARY.1181 C • 50 SURFACE - K . 0.7 I • $6 ILI (V144 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750. 1000 1250 1500 1750 2000 2250 Z500 2750 3000 IN FEET 10000 30.1 25.3 18.7 12.5 6.8 2.8 1.1 0.4 8000 30.1 25.3 18.7 12.5 6.8 2.8 1.1 0.4 6000 30.1 25.3 10.7 12.5 6.6 2.8 1.1 0.4 4000 29.3 24.6 18.2 12.1 6.6 2.6 1.0 3000 28.2 23.6 17.4 11.5 6.2 2.5 1.0 2000 26.3 21.5 16.1 10.6 5.6 2.2 0.8 1000 22.3 10.5 13.4 8.6 4.5 1.6 0.6 B00 21.4 17.8 12.1 8.2 4.2 1.5 0.6 600 19.1 15.8 11.3 7.1 3.6 1.3 400 16.3 13.4 9.4 5.8 2.9 1.0 300 14.2 11.6 8.1 4.9 2.4 0.8 200 11.7 5.5 6.5 3.9 1.8 0.4 150 9.4 7.6 5.1 3.0 1.3 0.3 100 7.2 5.7 3.! 2.1 0.8 BO 5.4 4.3 2.0 1.5 0.6 60 3.5 3.0 1.5 0.9 50 3.2 2.5 1.5 0.7 40 2.5 1.9 1.1 0.5 30 1.6 1.2 0.7 20 0.5 0.5 10 (114 SOIL LOSS FOCH WIND EROSION IN TONS PER ACRE PEP VEAR JANUARY.1981 C • 50 SURFACE - K • 0.5 I • 86 ILI (V144 - FLAT SMALL GRAI6 RESIDUE IN PCUNOS PER ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 21.5 17.8 12.! 8.2 4.2 1.6 0.6 8000 21.5 17.8 12.8 8.2 4.2 1.6 0.6 6000 21.5 17.! 12.P 8.2 4.2 1.6 0.6 4000 20.3 16.! 12.0 7.7 3.9 1.4 0.5 3000 19,5 16.1 11.5 1.3 3.7 1.3 2000 17.7 li,e �,y3 �,�3•z. � 1000 14.5 11.0 8.3 5.0 2.4 0.8 800 13.4 10.9 7.6 4.6 2.2 0.7 600 11.9 9.6 6.6 3.9 1.8 C.♦ 400 9.6 7.8 5.2 3.0 1.4 0.3 300 8.0 6.4 4.3 2.4 1.0 200 5.2 4.1 2.6 1.4 0.5 150 4.0 3.2 2.C 1.0 0.4 100 3.0 2.3 1.4 0.7 e0 2.1 1.6 1.0 0.4 60 1.5 1.1 0.6 50 1.1 0.9 0.5 40 0.9 0.5 30 0.6 0.4 20 10 • NOTE. SOIL LOSS FOP VALUES WHERE 'E• IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NCI SHOWN: OTHER VALUES NOT SHOWN APE INV4LID 44 NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT: NOT 'V' -59- . I 1514 SOIL LESS FPCN NIND ERDSICN IN TONS PER ACRE PER YEAR JANUARY.19650 SURFACE - K • 1.0 15 56 ILI IVIH - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1150 2000 2250 2500 2750 3000 IN FRET 10000 28.C 23.5 17.3 11.4 6.2 2.4 0.9 8000 28.0 23.5 17.3 11.4 6.2 2.4 0.9 6001 29.0 23.5 17.3 11.4 6.2 2.4 0.9 4000 26.9 22.5 16.5 10.9 5.8 2.3 0.4 3000 ?5.1 21.4 15.7 10.3 5.5 2.1 0.8 2000 24.2 20.1 14.6 9.5 5.0 1.9 0.1 LOCO 20.8 17.2 12.4 7.9 4.1 1.5 0.5 800 19.7 16.3 11.6 7.4 3.8 1.3 600 11.7 14.3 10.1 6.3 3.1 1.1 400 14.7 12.0 8.4 5.1 2.5 0.8 300 13.0 10.6 1.3 4.4 2.1 0.4 200 10.4 4.4 4.7 3.3 1.5 0.3 150 8.0 6.4 4.3 2.4 1.0 100 5.7 4.5 2.9 1.6 0.6 80 4.5 3.6 2.3 1.2 0.5 60 3.2 2.5 1.5 0.7 50 2.5 1.9 1.2 0.5 40 1.5 1.4 0.6 30 1.3 1.0 0.5 20 0.8 0.4 10 IF)* SOIL LOSS FROM WINO EROSION IN IONS PER ACRE Pip YEAR JANUART.I9850 SURFACE - K • 0.7 1 • 56 ILI Ivies - FLAT SMALL GRAIN RESIDUE IN PCUNCS PEP ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2150 3000 IN FEET 10000 19.6 16.2 11.6 7.3 3.7 1.3 8000 19.6 16.2 11.6 7.3 3.7 1.3 6000 19.5 16.1 11.5 1.3 3.7 1.3 4000 18.2 15.0 10.7 6.7 3.4 1.2 3000 17.3 14.2 10.1 6.3 3.1 1.1 2000 15.4 12.6 8.8 5.4 2.7 C.9 1000 12.8 IC.4 7.2 4.3 2.1 0.4 800 11.8 5.5 2.5 3.9 1.8 0.4 600 10.2 8.3 5.6 3.3 1.5 0.3 400 1.5 6.3 4.2 2.4 0.9 300 6.3 5.0 3.3 1.8 0.7 200 4.3 3.4 2.1 1.1 0.4 150 3.3 2.5 1.6 0.7 100 2.2 1.1 1.C 0.5 80 1.7 1.3 C.7 60 1.1 0.8 0.4 50 0.5 0.5 40 0.7 C.4' 30 20 10 1714 SOIL LOSS FPCM %INO EROSION IN IONS PFR ACRE PEP YEAR JANUARY.I581 SURFACE - P • 0.5 I • 56 ILI IV140 - FLAT SMALL GRAIN RESIDUE IN POUNCS PER ACRE UNSHELTERED DISTANCE C 750 50C 150 1000 I25C 1500 1150 2000 2250 2500 2750 '000 IN FRET 10000 14.0 11.4 7.5 4.8 2.3 0.1 8000 14.0 11.4 1.5 4.8 2.3 0.1 6000 13.5 11.0 7.6 4.6 2.2 0.1 4009 12.6 IC.2 1.C 4.2 2.0 0.4 3000 11.1 5.5 6.5 3.9 1.@ 0.4 2000 10.5 8.5 5.1 3.4 1.6 0.3 1000 1.1 6.2 4.1 2.3 0.9 800 6.5 5.2 33.4 1.9 0.7 600 4.0 3.B .4 1.3 0.5 40) 3.9 3.0 1.5 C.9 300 2.9 2.3 1.4 0.6 201 1.8 1.4 C.7 150 1.3 C.9 0.5 100 0.8 0.5 80 0.6 '.4 60 50 40 30 20 10 • NOTE: SOIL LOSS FOR VALUES NFEPE 'F' IS LESS TNAN 0.1 CR GREATER THAN 440.0 ARE NOT SHCNN; OTHER VALUES NOT SHChN ARE INVALID 4• NOTE: VALUES SHONN ARE FLAT SMALL GRAIN EQUIVALENT. NOT 'V' -60- (F1• Spit LOSS fPOM VINO FPUS16W IN TINS PIP 0067 PER YIAP JANUARV,1481 C 50 SURfACP - N . I.0 1 • 48 Ill (VI•• - FIAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED TIISIANC( 0 250 500 750 1000 1250 1300 1150 2000 2150 7500 2750 1000 IN FFFT 10000 24.0 20.0 14.5 9.4 5.0 1.9 0.7 8000 24.0 20.0 14.5 9.4 5.0 1.9 0.1 6000 24.C 70.0 14.5 9.4 5.0 1.9 0.1 4000 22.9 19.0 13.8 8.9 4.6 1.1 0.6 1000 22.1 18.1 1).2 9.5 4.4 1.6 0.6 J000 20.7 17.1 12.3 7.9 4.0 1.5 0.5 1000 11.4 14.3 IC.2 6.3 3.2. 1.1 800 15.8 13.0 0.1 3.6 2.0 C.C 600 14.0 11.4 1.9 4.8 7.1 0.7 400 12.1 9.8 6.7 4.0 1.9 0.4 100 10.4 8.4 5.1 ].3 1.5 0.1 200 7.6 6.1 4.0 2.3 0.9 ISO 5.1 4.0 2.6 1.4 0.5 100 4.0 •.1 1.5 0.9 90 1.2 2.5 1.5 0.7 60 2.0 1.5 C.8 SO 1.6 1.7 0.1 40 1.3 1.0 0.•. 10 0.8 0.5 20 10 (11. 5(11L Lt 15 0816 01ND AW(IS166 IA IONS P74 ACP7 668 YFAR JANVARY,1981 C • 50 SUPIAEF - R • 0.1 1 - 46 ILI (V)•• - 7161 SMALL GRAIN RISIOUI IA P0UNC5 PEP ACRI UNSHELTERED D15764CF 0 25C 500 150 1000 1250 1500 1750 2000 2250 2500 2153 1000 IN fFFI 10000 16.E 11.6 5.7 6.1 3.0 1.0 8000 16.8 11.8 9.1 6.1 3.0 1.0 6000 16.? 13.? 0.4 5.8 2.9 1.0 4000 15.0 12.3 8.6 5.3 7.6 0.8 )000 14.2 11.6 8.1 4.9 2,4 0.8 1001 13.0 10.6 7.3 4.4 2.1 0.4 1009 10.7 0.3 5.6 3.3 I. 0.3 900 OJ 7.5 5.0 2.9 1.1 0.1 60) 1.7 6.1 4.1 7.3 0.9 409 5.6 4.4 7.6 I.5 0.6 100 4.5 1.5 2.2 1.2 0.5 '0) 3.2 l.. 1.5 0.7 ILI 2.0 1.5 C.P 100 1.4 1.1 0.6 PI 1.1 C.9 C.4 69 0.1 1.4 SO 4n 30 20 In Ifl• SOIL LOSS FPCM VINO 16051CN IN TENS PER AEP( PEP YEAR JANUARY.1481 C • 50 SDR7AC7 - K • 0.5 I • 48 III (VI•• - TLAT SMAII GRAIN RESIDUE I6 PCUN05 PER ACRE UNSHFIvEPFO OISIANCF 0 250 500 150 1000 1250 1500 1150 2000 2250 1500 2750 3000 IN FFFT IC000 12.0 5.1 6.7 4.0 1.9 n.a 6000 12.0 9.7 6.7 4.0 1.9 0.4 60011 11.4 5.2 6.] 1.1 1.1 0.3 4000 10.5 e.5 5.7 1.4 1.6 C. 3000 9.1 I.5 5.0 2.9 1.3 0.3 2000 8.• 4.6 4.4 2.5 1.1 0.2 1009 5.2 4.1 l.F 1.4 O.5 600 4.6 ).6 7.3 1.2 0.5 600 1.7 2.9 1.6 0.6 40') 2.1 2.0 I.? 0.6 100 1.6 1.4 0.1 200 1.2 0.9 0.5 150 0.8 0.5 100 0.5 0.1 PO 60 Sn 40 .1 20 10 • wit. S(IL LOSS FOP VAlll(S 0011( 'F• IS IFSS THAN 0.1 OP GPFI,CN THAN 449.0 ARE NCl SHCVNI CltIFP VALUES NOT SHOWN APE INVAI In •. N017: VAIUIS SHOWA APE FIAT SMAII GRAIN PC619111.7, AC7 'V' -61- 1E1• SOIL LOSS EACH WINO EROSION Eh IONS PEP ACRE PER YEAR JANUARY.19850 I • 38 SURFACE - L • 1.C ILL 19 194 - FLAT SMALL GRAIN RESIDUE IN PCU A05 PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1755C 2000 2253 2500 2750 3000 lA FEET 10000 19.C 15.1 11.2 1.1 3.6 1.3 P000 19.0 15.7 11.2 1.1 3.6 1.3 6000 18.8 15.5 11.0 1.0 3.5 1.2 4000 17.! 14.4 10.2 6.4 3.2 1.1 3000 16.5 13.5 9.5 5.9 2.9 1.0 2000 14.8 12.1 8.4 5.2 2.5 0.8 1000 12.2 9.9 6.8 4.1 1.9 0.4 600 11.2 9.1 6.2 3.7 1.7 0.3 bon 9.7 7.8 5.3 3.a 1.4 0.3 400 1.4 5.9 3.9 2.2 0.9 300 5.8 4.6 3.0 1.6 0.6 209 4.1 3.2 2.C 1.1 0.4 150 3.0 7.3 1.4 0.1 100 1.9 1.5 0.8 00 1.6 1.2 0.6 60 1.0 n.6 50 0.8 0.5 40 0.6 0.4 30 20 in IE1• SOIL LOSS FROM WINO EROSION IN TENS PER ACRE PER YEAR JANUACY-19B50 SURFACE - L All 138 ILL IV N 4 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 I75C 2000 2250 2500 2750 3000 IN FEET 10000 13.3 10.8 7.5 4.5 2.2 0.4 8000 13.3 10.8 7.5 4.5 2.2 0.4 6000 12.8 10.4 7.2 4.3 2.0 0.4 4000 11.E 9.6 6.6 3.9 1.6 0.4 3000. 10.6 8.7 6.0 3.5 1.6 0.3 2000 9.1 7.8 5.2 3.0 1.4 0.3 1000 6.8 5.4 3.6 2.0 0.8 800 5.6 4.5 2.5 1.6 0.6 600 4.4 3.5 2.2 1.1 0.4 400 3.4 2.7 1.7 0.8 300 2.4 1.9 1.1 0.5 200 1.6 1.2 0.7 ISO 1.1 C.B C.4 100 0.1 0.4 80 60 50 40 30 20 10 1E1• SOIL LOSS FROM WIND EROSION IN TENS PER ACRE PEP YEAR JANUARY.1981 SURFACE - M C.5 1 • 38 ILI 1y14• - FLAT SMALL GRAIN RESIDUE IN PCUNCS PEP ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 9.5 1.6 5.1 3.0 1.4 0.3 8000 9.4 7.6 5.1 2.9 1.3 0.3 6000 8.7 7.0 4.7 2.7 1.2 0.2 4000 8.0 6.4 4.2 2.4 1.0 3000 6.8 5.4 3.5 2.0 0.8 2000 5.6 4.4 2.9 1.5 0.6 1000 3.7 2.9 1.8 0.9 800 3.2 2.4 1.5 0.7 600 2.3 1.8 1.1 0.5 400 1.6 1.2 0.6 300 1.1 0.8 0.4 200 0.2 0.4 150 100 60 60 50 40 30 20 10 • NOlE' SOIL LOSS FOP VALUES WHERE if. IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NOT SHOWN: OTHER VALUES NOT SHOWN APE INVALID .4 NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NCT -62- • If). SOLI LOSS (PUN WINO fAIISION IN T(NS PfP AfRf PIP YEAR JANUACV.19P1 SORIACI - A • I.C T • 21 III 114 - FIAT SHALL GRAIN RESIDUE IN PCUMUS PIP ACME UNSNII TEPf D OISTANCF 0 250 500 150 1000 1250 1500 115( 2000 2250 2500 2150 1000 IN IFFI 10000 In.. P.5 •.P 1.4 1.6 0.1 4100 10.5 0.5 1.11 1.4 1.6 0.1 min) 9.P 1.9 5.1 1.1 1.4 C.1 4000 9.0 1.7 4.9 1.8 1.1 0.1 1000 F.P 6.1 4.7 2.1 n.9 2000 6.! 4.1 1.5 1.0 0.11 1000 4.3 1.1 2.1 1.1 0.4 000 1.1 2.9 1.0 6.9 60n `.9 2.2 1.♦ 0.6 400 1.5 1.4 0.11 100 1.4 1.1 0.6 200 0.8 C.5 150 0.5 0.1 Inn An Nn 40 40 30 10 10 IFI. SOIL LOSS FROM WINO EROSION IN '(N1 PER ACRE PIP VI AP JANUARY.1981 SURF ACE - P • 0.1 I • 21 ILI IVIN - FIAT SWILL GRAIN PF510UF IM PC11605 PIP *CPI UNSNF111310 DISTANCE 0 23C 500 250 1000 12•.0 1500 115C 2000 2250 2500 2150 3000 IN 1111 10000 1.3 3.9 IA 2.2 0.9 6000 1.0 5.6 1.6 2.0 0.6 6000 6.3 5.0 3.2 1.A 0.1 1000 1000 4.1 3.7 2.4 1.3 0.5 2000 4.0 1.1 1.5 0.9 1000 1.9 1.5 0.2 0.5 600 1.9 1.5 0.6 600 1.5 1.5 0.6 409 1.0 C.4 309 0.1 C.. 200 I59 Inn An 60 50 40 30 20 ID 1(14 5011 LOSS (PCP WINO FMCSICN 16 TINS PIP ACE! PIA 'OAP JANUARY.IT!3n SUPFACI - N • 0.5 I 21 ILA 11011.1 - FIAT SMAl1 411416 PFSIOU( I6 PCUNCS P19 ACP( UNSPILIFPID OISIANCE 0 750 50C 150 1000 1250 1300 1150 200n 2250 25(0 2150 1100 IN flit 10000 5.2 4.1 2.1 I. 0.6 3000 4.5 1.9 2.5 I.3 0.5 6000 4.P 1.4 2.4 1.1 0.5 4000 4.2 1.1 2.1 1.1 0.4 3000 3.6 3.0 l.c 0.9 2000 3.1 7.4 1.5 0.1 1000 1.8 1.3 0.1 PA) 1.• 1.1 0.Y 600 1.0 0.6 400 0.1 0.4 100 200 IRO 100 PO 60 5n 40 10 20 In • N011: 440 SOIL A 1 I DIFP INeN APF Nfl S : 0111(1. VALOIS 5013NE W6 APF INVALID • .• NOTE: VALUES SNOMN APF FLIT SMALL GPIIN EOUIVALFPT. NIT 'V• —(1"I— 1E16 SOIL LOSS FPCM WIND EROSION IN IONS PER ACRE PEP YEAR JANUA`T-1981 50 SURFACE - K • 1.0 I . 12 ILI IVISA - FLAT SMALL GRAIN RESIDUf IN POUNDS PER ACRE UNSHELTERED DISTANCE C 250 500 750 1000 1250 1500 1750 2000 2250 2500 2150 3000 IN FEET 10000 6.C 4.8 3.1 1.1 0.7 8000 5.6 4.5 2.9 1.6 0.6 6000 5.1 4.0 2.6 1.4 0.5 4000 4.6 3.6 2.3 1.2 0.5 3000 4.2 3.3 2.0 1.1 0.4 2000 3.4 2.1 1.6 0.8 1000 1.9 1.5 O.@ 803 1.6 1.2 0.1 600 1.2 C.9 C.5 400 0.8 C.5 300 0.6 0.3 200 150 IGO 80 60 50 40 30 20 10 111* SOIL LOSS FPCM MIND EROSICN IN TONS PER ACRE PER YEAR JANUARY.1981 C 10 SURFACE - K • 0.7 I 12 ILI Iy1AA - FLAT SMALL GRAIN RESIDUE IN PCUNOS PEP ACRE UNSPELIFRED DISTANCE 0 250 500 750 1000 1250 1500 1150 2000 2250 2500 2750 3000 IN FEET 10000 4.2 1.3 2.1 1.1 0.4 8000 4.0 3.1 1.9 C.9 6000 3.8 2.9 1.8 0.9 4001 3.1 2.4 1.5 0.7 3000 2.8 2.1 1.7 0.6 2000 2.1 1.6 0.5 0.4 1000 1.3 1.0 0.5 800 1.1 C.8 C.4 600 0.8 0.4 400 300 200 150 100 RO 60 50 40 30 20 10 IE1A SOIL LOSS FROM MIND EROSION IN IONS PER ACRE PER YEAR JANUAPY.1981 SURFACE - K • 0.5 1 . 12 ILI TV14A - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE - 250 500 750 1000 1250 1500 1150 2000 2250 2500 2150 3000 IN FEET 10000 3.0 2.3 1.4 0.7 8000 2.7 2.1 1.2 0.6 6000 2.4 1.5 1.1 0.5 4000 1.9 t.5 0.8 3000 1.7 1.3 0.1 2000 1.4 1.1 0.6 1000 0.9 0.5 800 0.1 C.4 600 400 300 200 150 100 fl0 6. 50 40 30 20 10 THAN 0.1• NLIE- LCSS PCP VALUE WHERE .E. IS ARE NOT SHCMN: OTHER VALUES NOT S SHCMN ARE I R GREATER THAN INVALID 44 NCTFI VALUES SFC44 APE FLAT SMALL GRAIN FOUIVALENlr NOT •V• -64- (E11 SOIL LOSS FROM WIND EROSICN IN ICNS PER ACRE PEP YEAR JANUARY.198110 SURFACE - 8 • I.C I . 310 ILI (VIP* - FLAT SMALL GRAIN RESIDUE IN ',CURDS PER ACRE UNSHELTERED DISTANCE 0 250 S00 750 1000 1250 1500 1750 2000 2250 2500 2750. 3000 16 FEEL 10000 186.1 168.2 144.5 121.7 85.5 63.5 40.2 26.5 19.3 10.2 6.0 1.5 0.2 8000 186.0 160.2 144.5 121.7 89.5 63.5 40.2 26.5 19.3 11.2 6.0 1.5 0.8 6000 146.0 160.2 144.5 121.7 89.5 63.5 40.2 26.5 19.3 10.2 6.C 1.5 C.8 4009 186.0 169.2 144.5 121.7 89.5 63.5 40.2 26.5 19.3 11.2 6.C 1.5 C.8 3000 146.0 160.2 144.5 121.7 89.5 63.5 40.2 26.5 19.3 10.2 6.0 1.5 C.8 2000 106.0 168.2 144.5 121.7 89.5 63.5 40.2 26.55 15.3 10.2 6.0 1.5 0.0 1000 186.C 160.2 144.5 121.7 89.5 63.5 40.2 26.5 19.3 10.2 6.0 1.5 0.8 800 186.0 165.2 144.5 121.7 89.5 63.5 40.2 26.5 19.3 IC.2 6.0 1.5 1.8 600 186.C 164.2 144.5 121.7 89.5 63.5 40.2 16.5 19.3 10.2 6.0 1.5 L.8 400 186.1 160.2 144.5 121.7 89.5 63.5 40.2 26.5 19.3 10.2 6.0 1.5 0.8 300 184.1 16(.4 142.8 120.1 88.1 62.4 39.3 25..5 18.E 9.9 5.8 1.5 0.8 200 177.9 160.6 137.4 115.1 84.0 58.8 36.0 24.0 11.3 8.9 5.2 1.3 0.7 150 170.0 1'3.9 131.1 109.3 79.2 54.8 33.9 21.8 15.6 1.9 4.5 1.1 0.6 100 164.6 148.1 126.C 104.5 75.2 51.4 31.6 20.1 14.3 7.1 4.0 1.0 0.5 80 158.'. 142.2 120.5 99.4 71.1 40.1 29.2 10.4 13.0 6.3 3.5 0.8 C.5 60 141.2 131.8 111.1 90.8 64.2 42.4 25.3 15.6 10.8 5.1 2.8 0.6 50 141.4 126.4 100.1 96.3 60.6 39.5 23.4 14.2 9.8 4.6 2.4 0.2 40 135.2 120.6 101.0 01.7 56.9 36.6 21.4 12.9 8.8 4.0 2.1 0.2 30 122.4 108.8 SC.3 72.1 49.4 30.8 ❑.6 10.3 6.5 3.0 1.5 0.2 20 106.8 94.4 17.5 60.8 40.7 24.4 13.4 1.5 4.9 2.0 I.C 0.1 I0 82.1 71.8 57.7 43.8 28.1 15.5 8.0 4.1 2.6 0.9 0.3 1118 SOIL LOSS FPCM WINO EROSION IN 1CNS PER ACRE PEP YEAR JANUARY.19010 SURFACE - K • 0.7 I • 310 ILI I4),, - FLAT SMALL GRAIN RESIDUE IN POUNDS PEP ACRE UNSHELTERED DISTANCE C 250 500 750 1000 1250 1500 17550 2101 2250 2500 2750 3000 IN FEET 10000 130.2 116.0 56.8 17.9 53.9 34.3 19.5 11.8 8.0 3.6 1.5 0.2 8000 130.2 116.0 96.8 77.9 53.9 34.3 19.9 11.8 8.0 3.6 1.5 0.2 6000 130.2 116.0 56.8 77.9 53.9 34.3 19.9 11.8 8.0 3.6 1.5 0.2 4000 130.2 116.0 96.8 77.9 53.9 34.3 19.9 11.8 8.0 3.6 1.9 0.2 3000 130.2 116.0 56.0 77.9 53.9 34.3 19.9 11.8 8.0 3.6 1.9 0.2 2000 130.2 116.0 56.8 77.9 53.9 34.3 I9.S 11.8 8.0 3.6 1.5 0.2 1000 130.2 116.0 56.8 17.9 53.9 34.3 19.9 11.8 8.0 3.6 1.9 0.2 800 129.0 115.6 56.♦ 77.6 53.7 34.1 19.7 11.7 1.9 3.5 1.8 0.2 603 125.9 112.C 51.2 74.7 51.4 37.4 18.6 10.5 7.4 3.3 1.7 0.2 400 121.7 100.1 89.7 11.6 49.0 30.5 17.4 10.1 6.8 2.9 1.5 0.2 300 ]11.8 104.5 86.5 68.1 46.8 18.8 16.3 9.4 6.3 2.7 1.3 0.2 200 109.9 57.2 80.0 63.0 42.4 25.6 14.2 8.0 5.3 2.2 1.1 0.2 150 103.9 91.1 75.1 58.8 39.2 23.2 12.7 7.1 4.6 1.9 0.5 0.1 100 57.8 86.0 70.1 54.5 35.9 20.9 11.3 6.2 4.0 1.6 0.7 0.1 80 51.6 80.4 65.2 50.2 32.8 18.7 9.9 5.3 3.4 1.3 0.4 60 82.4 72.0 51.5 44.0 28.2 15.6 8.1 4.2 2.6 C.S 0.3 50 77.1 67.3 53.8 40.5 25.1 13.9 7.1 3.6 2.2 0.7 40 72.3 62.5 50.0 37.4 23.5 12.4 6.2 3.1 1.5 0.6 30 63.5 55.0 43.2 31.8 15.5 10.0 4.8 2.3 1.4 20 53.6 46.0 35.7 25.1 15.4 7.4 3.4 1.6 0.9 10 37.2 31.5 23.7 16.3 9.2 4.0 1.7 0.6 (E18 SOIL LOSS FPCM WIND EROSION IN ICNS PER ACRE PEP YEAR JANUARY.1981 C • 60 SURFACE - N • 0.5. 1 • 310 (LI (VI** - FLAT SMALL GRAIN RESIDUE Ih PCUNCS PER ACRE UNSHELTERED DISTANCE C 250 500 750 1000 1250 1500 17`1 2000 2250 2500 2750 3000 TN FEET 10000 93.0 81.7 66.3 51.2 33.5 19.2 10.2 5.5 3.5 1.3 C.4 8000 93.0 81.7 66.3 51.2 33.5 19.2 10.2 5.5 3.5 1.3 0.4 6000 93.0 81.1 66.3 51.2 33.5 19.2 10.2 5.5 3.5 1.3 0.4 4000 93.0 81.7 66.3 51.2 33.5 19.2 10.2 5.5 3.5 1.3 0.4 3000 93.0 81.7 62.3 51.2 33.5 19.2 10.2 5.5 3.5 1.3 0.4 7000 93.0 81.7 66.3 51.2 33.5 15.2 10.2 5.5 3.5 1.3 0.4 1000 90.1 75.1 64.0 49.2 32.0 18.2 9.6 5.1 3.2 1.2 0.4 800 87.9 77.0 62.2 47.7 30.9 11.4 9.1 4.8 3.0 1.1 0.4 600 84.S 74.3 59.8 45.6 29.4 16.4 8.5 4.5 2.8 1.0 0.3 400 79.4 69.3 55.5 42.0 26.8 14.6 7.5 3.8 2.4 0.8 300 75.6 65.8 52.5 39.5 25.0 13.4 6.8 3.4 2.1 0.7 200 68.1 59.1 46.8 34.7 21.6 11.2 5.5 2.7 1.6 C.5 150 61.4 53.1 41.6 30.5 18.6 9.4 4.5 2.2 1.3 100 56.1 48.3 31.6 27.2 16.4 8.0 3.8 1.8 1.0 80 51.9 44.6 34.5 24.7 14.7 7.0 3.2 1.5 0.8 60 ♦5.S. 39.2 30.0 21.2 12.3 5.7 2.5 1.1 0.5 50 41.7 35.5 27.0 18.8 10.8 4.8 2.1 C.S 0.4 40 38.0 32.2 24.3 16.8 9.5 4.1 1.8 0.6 30 32.8 27.6 20.6 13.9 7.7 3.2 1.3 0.4 20 25.2 21.1 15.4 10.1 5.3 2.0 0.8 10 16.6 13.6 9.6 6.0 2.9 1.0 • NOTE: SOIL LOSS FIR VALUES WHERE •F• IS LESS THAN 0.1 CR GREATER THAN 440.0 ARE NCI SHOWN: OTHER VALUES NOT SHOO. ARE 1694110 48 NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NCT 'V• -65- 161• SOIL LOSS FPCM WIND EROSICN IN 1CNS-PER ACRE PER YEAR JANUARY.=19860 SURFACE - M • 1.0 I • 250 ILL Mots - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2750 2500 2750 3000 IN FEET 10000 (50.C 1344 1134 93.0 65.4 43.8 16.3 16.3 11.4 5.4 3.0 0.7 8000 150.0 134.4 113.4 91.0 65.9 43.5 26.3 16.3 11.4 5.4 3.0 0.7 6003 150.3 134.4 113.4 93.0 65.9 43.8 26.3 16.3 11.4 5.4 3.C 0.7 400) 150.0 134.4 113.4 93.0 65.9 43.6 76.3 16.3 11.4 5.4 3.0 0.1 3003 150.0 134.4 113.4 93.0 65.9 43.5 26.3 16.3 11.4 5.4 3.0 0.7 2003 150.0 134.4 113.4 93.0 65.9 43.8 26.3 16.3 11.4 5.4 3.0 0.7 1800 150.0 134.4 113.4 93.0 25.9 43.8 26.3 16.3 11.4 5.4 3.6 0.7 600 150.0 134.4 113.4 93.0 65.9 43.8 26.3 16.3 11.4 5.4 3.0 0.7 400 146.7 131.3 110.6 90.4 63.6 42.1 25.1 15.5 10.7 5.1 2.7 0.3 300 143.3 128.2 101.8 81.8 61.8 40.5 24.0 14.7 10.2 4.7 2.5 0.2 200 136.4 121.8 102.0 52.6 57.6 37.2 21.8 11.1 9.0 4.1 2.2 0.2 150 129.3 115.1 52.0 77.2 53.4 33.9 19.6 11.6 7.9 3.5 1.8 0.2 100 121.5 108.2 25.8 71.1 49.1 30.6 11.4 10.2 6.8 3.0 1.5 0.2 80 115.2 102.1 84.3 66.8 45.3 27.1 15.6 8.9 5.9 2.5 1.2 0.2 60 106.4 94.0 77.1 60.5 40.5 24.2 13.3 7.5 4.9 2.0 1.C 0.1 50 100.6 88.7 72.5 56.5 37.4 22.0 11.5 6.6 4.3 1.7 0.8 0.1 40 54.3 82.9 61.3 52.0 34.1 19.6 10.5 5.7 3.6 1.4 0.4 30 81.9 13.4 59.1 45.0 28.9 16.1 6.3 4.4 2.1 1.0 0.3 20 72.3 62.8 50.0 31.3 23.4 12.4 6.2 3.1 1.9 0.6 10 52.2 44.8 34.1 24.9 14.8 7.1 3.3 1.5 0.8 (El* SOIL LOSS FROM WIND EROSICM IN 1CNS PER ACRE PEP YEAR JANUARV.1981 C • 60 SURFACE - R • 0.7 1 • 250 ILI (VIM* - FLAT SMALL GRAIN RESIDUE IN PCUNCS PEP ACRE UNSHELTERED DISTANCE 0 250 SOC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 1CS.C 92.7 76.C 59.5 39.1 23.6 13.0 7.2 ♦.1 1.9 0.9 0.1 8000 IC5.0 92.7 76.C 59.5 39.7 23.6 13.0 7.2 4.7 1.9 0.9 0.1 6000 105.0 92.7 16.6 59.5 39.7 23.6 13.0 7.2 4.7 1.9 0.9 0.1 4000 105.0 92.7 76.C 59.5 39.7 23.6 13.0 7.2 4.7 1.9 0.9 0.1 3000 105.0 92.7 76.0 59.5 39.7 23.6 13.0 7.2 4.7 1.9 0.9 0.1 2000 105.0 52.7 76.C 59.5 39.7 23.6 13.0 7.2 4.1 1.9 0.9 0.1 1000 103.8 91.6 75.0 58.7 39.1 23.2 12.1 7.1 4.6 1.5 0.5 0.1 800 101.8 89.7 13.4 57.3 38.0 22.4 12.2 6.8 4.4 1.7 0.8 0.1 600 99.6 81.1 71.6 55.7 36.9 21.6 11.7 6.4 4.1 1.6 0.6 0.1 400 94.4 83.0 67.4 52.1 34.2 19.7 10.5 5.7 3.6 1.4 0.4 100 89.9 78.8 63.8 49.0 31.9 16.1 9.6 5.1 3.2 1.2 0.4 200 82.5 72.1 52.0 44.1 28.3 15.6 8.1 4.2 2.6 0.9 0.3 150 76.0 66.2 52.8 39.7 25.1 13.5 6.9 3.5 7.1 0.7 100 69.5 66.7 48.1 35.6 22.3 11.7 5.8 2.9 1.7 C.6 8) 64.9 56.7 44.3 32.6 20.1 10.3 5.3 2.4 1.4 63 57.1 49.2 32.4 27.8 16.8 8.3 3.9 1.6 1.1 50 53.2 45.7 35.5 25.5 15.2 7.3 3.4 1.6 0.5 40 49.3 42.2 32.5 23.2 13.7 6.4 2.9 1.3 0.6 30 44.5 32.0 29.0 20.4 11.8 5.4 2.4 I.C 0.5 20 34.3 28.9 21.6 14.7 8.2 3.4 1.4 0.5 13 23.C 19.1 13.8 8.9 4.7 1.7 0.6 IE14 SOIL LCSS FPCN WINO EROSICN IN !CRS PER ACRE PER YEAR JANUARY.1991 C • 60 SURFACE - N • C.5 I • 150 (LI (V1•• - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE LNSHELTFREO DISTANCE 0 250 500 750 1000 1250 1500 1250 2000 2250 2566 2750 3000 IN FEET 10001 75.C 65.1 52.1 39.1 24.7 13.2 6.7 3.4 2.1 C.7 8300 75.C 65.3 52.1 39.1 14.7 13.2 6.7 3.4 2.1 0.7 6300 75.0 65.3 52.1 39.1 24.7 13.2 6.7 3.4 2.1 0.7 4000 75.C 65.3 52.1 39.1 24.7 13.2 6.1 -3.4 2.1 C.7 1000 75.0 65.3 52.1 39.1 24.7 13.7 6.1 3.4 1.1 0.7 2000 14.4 64.6 51.6 32.7 24.4 13.1 6.6 3.3 2.0 0.7 1000 70.7 61.4 48.7 36.3 12.7 12.0 5.5 3.0 1.8 6.6 800 65.5 59.4 47.0 34.9 21.7 11.3 5.6 2.8 1.7 C.5 600 64.1 55.5 41.1 32.2 19.8 IC.1 4.9 2.4 1.4 400 58.9 50.2 35.7 28.9 17.5 6.1 4.1 2.0 1.1 300 55.5 47.7 31.1 76.8 16.1 7.9 3.7 1.7 1.0 200 50.0 42.8 31.0 23.6 13.9 6.6 3.0 1.3 0.6 150 44.8 38.2 29.2 20.6 11.9 5.5 2.4 1.1 0.5 100 39.7 33.7 25.5 17.7 10.1 4.4 1.5 0.8 0.4 80 36.1 30.7 23.0 15.8 8.9 3.8 1.6 0.5 60 31.2 26.3 15.5 13.1 7.1 2.5 1.2 0.4 50 78.2 23.6 17.4 11.6 6.2 2.5 1.0 40 25.0 20.8 15.2 5.9 5.3 2.0 0.8 30 21.2 17.6 12.7 8.1 4.2 1.5 0.6 20 16.2 13.3 9.4 5.8 2.9 1.0 16 13.2 8.2 5.5 3.2 1.5 C.3 • NOTE: SOIL LCSS FOP VALUES WHERE 'E• IS LESS THAN 0.1 CR GREATER MAN 440.0 ARE NCT SHOWN: ETHER VALUES NOT SHOWN APE INVALID a NOTE: VALUES SI-CVN ARE FLAT SMALL GRAIN EOUIVALSRI. NCT 'V• -66- • 1E14 SOIL LOSS FRCS WINO EROSION IN TONS PEP ACRE PER WEAR JANUARY.-1961 I I . 220 SURFACE - L • LC ILI 11 111 - FLAT SMALL GRAIN RESIDUE IN PNh05 PER ACRE DISTANUNSHELTEREDCE 0 250 500 750 1000 1250 1500 Il5t 2000 2250 2500 2750 3000 IN FEET 10000 132.0 117.6 58.3 79.2 55.0 35.1 20.4 12.2 8.3 3.7 1.9 0.2 8000 132.0 117.6 98.3 79.2 55.0 35.1 20.4 12.2 8.3 3.7 1.5 0.2 4000 132.0 117.6 18.3 79.2 55.0 35.1 20.4 12.2 8.3 3.7 15 0.2 3000 132.0 117.6 98.3 79.2 55.0 35.1 20.4 12.2 8.3 3.7 1.9 0.2 2000 132.C 117.6 58.3 79.2 55.0 35.1 20.4 12.2 8.3 3.7 1.9 0.2 1800 132.0 117.6 58.3 79.2 55.0 35.1 20.4 12.2 8.3 3.7 1.9 0.2 600 128.4 114.3 95.2 16.5 52.8 33.5 19.3 11.4 7.7 1.4 1.8 0.2 10.7 300 120.2 106.7 88.5 70.5 48.2 29.9 17.0 5.8 6.6 2.8 1.4 0.2 8.5 5.6 2.3 1.1 0.2 1200 112.5 99.6 82.1 64.9 43.8 26.6 14.950 106.3 93.9 77.C 60.5 40.5 24.2 13.3 7.5 4.9 2.0 1.0 0.1 1880 194.5 83.0 61.5 52.2 34.2 19.7 10.5 5.7 3.6 1.4 0.8 0.1 0 60 84.2 73.8 59.4 45.3 29.1 16.2 8.4 4.4 2.8 1.0 0.3 50 78.8 68.7 55.0 41.6 26.5 14.4 7.4 3.! 2.3 0.8 30 65.4 56.6 44.7 33.0 20.3 10.5 5.1 2.5 1.5 0.5 20 54.7 47.1 36.6 26.4 15.8 1.0 10 38.1 32.3 24.3 16.8 9.5 4.1 1.@ 0.6 1610 SOIL 1C 55 FPCM WIND EROS I[N IN 1CN5 PER ACRE PER YEAR JANUACW•196660 I • 220 limo - K • 0.1 ILI IV 4 - FL FLAT SMELL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 52.4 81.1 65.! 50.7 33.2 19.C 10.1 5.4 3.4 1.3 0.4 6000 52.4 61.1 65.8 50.7 33.2 15.C 10.1 5.4 3.4 1.3 0.4 4000 92.4 81.1 65.! 50.7 33.2 15.0 10.1 5.4 3.4 1.3 0.4 2007 15.4 3.4 1.3 0.4 100'1 89.6 18.5 63.6 48.8 31.7 18.C 9.5 5.1 3.2 1.2 0 4 600 87.3 76.5 61.8 47.3 30.6 11.2 9.0 4.8 3.0 1.1 0.4 0.3 400 78.5 68.8 55.1 41.7 26.5 14.5 7.4 3.8 2.3 0.8 200 67.5 51.5 46.3 34.3 21.3 11.0 5.4 2.7 1.6 0.5 100 55.t 47.8 37.2 26.9 16.2 7.9 3.7 1.7 1.C 60 45.3 38.7 29.6 20.9 12.1 5.6 2.5 1.1 0.5 10.6 0.4 40 37.6 31.9 24.0 16.5 9.3 4.0 1.7 0.6 30 32.4 21.2 20.3 13.7 1.5 3.1 1.3 0.4 21 24.8 2C.7 15.1 0.7 10 16.3 13.3 5.4 5.8 2.9 1.0 C • 60 1E)• SOIL LOSS FRCP WINO FROS1CN IN IONS PEP ACRE PER TEAR JANDA:0.1S61 10 SURFACE - R • 0.5 11.155 - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER RE ILI UNSHELTERED 0 250 SOO 150 1000 1250 1500 175C 2000 2250 2500 2750 3C00 DISTANCE IN FEET 66.0 57.2 45.1 33.3 20.6 10.6 5.2 2.5 1.5 0• 100005 66.0 57.2 45.1 33.3 20.6 10.6 5.7 7.•- 1.5 C.5 8000 66.C 51.2 45.1 33.3 20.6 10.6 5.2 2.5 1.5 0.5 6000 4000 66.0 57.2 45.1 33.3 20.6 10.6 5.2 2.5 1.5 O. 3000 60.5 2000 64.5 55.! 44.0 32.4 20.C 1C.2 5.0 2.4 1.4 1800 58.5 50.8 3 .4 28.9 17.5 8.7 4.1 2.0 1. 800 57.2 45.3 38.4 25.8 16.9 8.3 3.9 1.6 1.1 400 49.6 42.5 52.8 23.4 13.8 6.5 3.0 1.3 0.6 1 200 39.2 33.3 25.2 17.4 9.9 4.3 1.9 0.8 0.4 34.9 25.5 22.1 15.1 8.4 3.6 1.5 0.5 150 7.2 2.9 1.2 0.4 780 31.2 233 19.2 11.7 80 27.9 19.4 14.1 19 1 4.8 1.8 0.7 50 21.0 19.4 14.1 0.5 40 18.7 15.4 11.0 6.9 3.5 1.2 30 15.0 12.3 6.6 5.3 16 0.3 20 11.4 9.2 6.3 10 5.4 4.3 2.8 1.5 0.6 • NCTEI SOILCSS FOR VALUES WHERE .E' IS 0 ARE MCI SHOWN; 5 ETHEP VALUES NOT SHOWN ARE INVALID TER THAN 440. 55 NC1E' VALUES SHOWN APE FLAT SMALL GRAIN EQUIVALENT. NOT 'V' -67- 1814 SOIL LOSS FRCP WINO 88051(1. IN 1CNS PER ACRE PEP YEAR JANUARY`1981C C SURFACE - K • 1.C 1 . 180 ILI IV H• -FLAY SMALL GRAIN RESIDUE 43 PCUND5 PER ACRE UNSHELTERED DISTANCE C 25C 500 750 1000 1250 1500 1750 2000 2250 2500 2750 2000 IN FEET 10000 108.C 95.5 78.4 61.7 41.4 24.8 13.7 1.1 5.1 2.1 1.0 0.2 6000 108.0 95.5 78.4 61.7 41.4 24.8 13.7 7.7 5.1 2.1 1.C 0.2 6000 108.0 95.5 78.4 61.7 41.4 24.8 13.7 7.7 5.1 2.1 l.C 0.2 4000 106.0 55.5 78.4 61.7 41.4 24.6 13.7 7.7 5.1 2.1 1.0 0.2 3000 108.0 95.5 78.4 61.7 41.4 24.8 13.7 7.7 5.1 2.1 I.E 0.2 2000 108.0 59.5 78.4 61.7 41.4 24.6 13.7 7.7 5.1 2.1 1.0 0.2 1000 107.C 94.5 77.6 60.9 40.8 24.4 13.5 1.6 4.9 2.0 1.C 0.1 800 105.4 93.1 76.3 59.8 40.0 23.R 13.1 7.3 4.8 4.9 0.9 0.1 600 1C2.9 90.7 74.3 58.0 38.6 22.8 12.5 6.9 4.5 1.8 0:5 0.1 403 98.1 86.3 70.4 54.7 36.1 21.0 11.3 6.2 4.0 1.6 0.7 0.1 300 94.6 83.2 67.8 52.3 34.3 19.8 10.6 5.7 3.7 1.4 0.4 200 06.7 76.0 61.3 46.9 30.3 17.0 6.9 4.7 2.9 1.1 0.3 150 79.8 65.5 55.7 42.1 26.9 14.7 7.5 3.9 2.4 0.8 100 73.7 64.1 51.1 38.3 24.1 12.8 6.5 3.2 2.C C.6 80 69.C 59.9 47.5 35.3 22.0 11.5 5.7 2.8 1.7 0.5 60 60.5 52.3 41.0 29.9 18.3 5.2 4.4 2.1 1.2 50 56.3 40.5 37.6 27.4 16.5 8.1 3.6 1.8 1.0 40 52.3 44.6 34.7 24.9 14.8 7.1 3.3 1.5 0.8 30 41.3 40.5 31.1 22.0 12.9 6.0 2.7 1.2 0.5 20 36.3 30.7 23.1 15.8 8.9 3.0 1.6 6.5 10 24.2 20.1 14.6 9.5 5.0 1.5 0.7 1119 SOIL LOSS FROM WINO ERCSICN IA IONS PER ACRE PEP YEAR JANUARY.I5860 SURFACE - L • All I • 180 Ill IV 144 - FLAI SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1751 2000 2250 2500 2750 3000 IN FEET 10000 75.6 65.8 52.5 39.5 25.0 13.4 6.8 3.4 2.1 0.7 6000 75.6 65.8 52.5 39.5 25.0 13.4 6.8 3.4 2.1 0.7 4000 75.6 65.8 52.5 39.5 25.0 13.4 6.8 3.4 2.1 0.7 3000 75.6 65.8 52.5 39.5 25.0 13.4 6.8 3.4 2.1 0.7 2000 75.1 65.4 32.2 39.2 24.8 13.3 6.7 3.4 2.1 0.7 1000 71.♦ 62.1 49.3 36.8 23.0 12.2 6.1 3.C 1.8 0.6 800 69.6 60.4 47.9 35.6 22.2 11.6 5.8 2.8 1.7 0.5 600 65.1 56.4 44.4 32.8 20.2 10.4 5.1 2.5 1.5 0.5 400 59.7 51.5 40.3 29.4 17.9 8.9 4.3 2.0 1.2 300 56.3 40.4 37.7 27.3 16.5 8.1 3.8 1.8 1.0 200 50.8 43.5 33.6 24.0 14.2 6.8 3.l 1.4 0.0 150 45.7 39.0 29.8 21.1 12.3 5.6 2.5 1.1 0.5 100 40.5 34.4 28.1 18.1 10.4 4.6 2.0 0.8 0.4 80 36.9 31.2 23.5 16.1 9.1 3.9 1.7 0.6 60 31.8 26.8 19.5 13.4 1.4 3.0 1.2 0.4 50 28.9 24.2 17.9 11.9 6.4 2.6 1.0 40 25.7 21.4 15.7 10.3 5.5 2.1 0.8 30 21.6 18.0 12.9 8.3 4.3 1.6 0.6 20 16.4 3.7 9.6 6.0 3.0 1.0 10 10.4 18.4 5.7 3.3 1.5 0.3 1114 SOIL LOSS FRCP WINO ERCSICN ID 1CN5 PER ACRE PER YEAR JANUARY-1981C 60 SURFACE - R • 0.! I . 180 ILI IYI4s - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 54.0 46.4 36.0 26.0 15.5 7.5 3.5 1.6 0.9 8000 54.0 46.4 36.0 26.0 15.5 7.5 3.5 1.6 0.9 6000 54.0 46.4 36.0 26.0 15.5 7.5 3.5 1.6 0.9 4000 54.0 46.4 36.C 26.0 15.5 7.5 3.5 1.6 0.9 3000 54.0 46.4 36.0 26.0 15.5 1.5 3.5 1.6 0.9 2000 52.1 44.7 34.6 24.8 14.8 7.1 3.3 1.5 0.8 1000 41.2 40.4 31.0 22.0 12.9 6.0 2.7 1.2 0.5 800 45.! 38.8 29.7 21.0 12.2 5.6 2.5 1.1 0.5 600 41.5 35.3 26.8 18.7 10.7 4.8 2.1 0.9 0.4 400 36.5 30.9 23.2 15.9 8.9 3.8 1.6 0.5 300 33.3 26.1 21.C 14.2 7.9 3.3 1.3 0.5 200 28.5 23.9 17.6 11.7 6.3 2.5 1.0 150 24.1 20.1 14.6 9.5 5.0 1.9 0.7 100 21.0 17.4 12.5 8.0 4.1 1.5 C.5 83 19.1 15.6 11.2 7.1 3.6 1.3 60 14.9 12.2 6.5 5.2 2.5 0.6 50 13.2 10.7 7.4 4.5 2.1 0.4 40 11.4 9.2 6.3 3.7 1.7 0.3 30 8.! 1.1 4.7 2.7 1.2 0.2 20 5.4 4.3 2.7 1.5 0.6 10 2.5 1.9 1.2 0.5 • NOTE: SOIOSS FOR VALUE WHERE .E: IS 440.0L ARE NCI SHOW:: OTHER VALUES NOT SHOWN THAN 0.1 CP GREATER THAN SHOWN ARE INVALIC *4 NCTE• VALUES SHOWN ARE FLAT SMALL BRAIN EOUIVAIENI. NOT •V• -68- LEI* SOIL LESS UCH WINO EROSION IN IONS PEP ACRE PER YEAR JANUARY.1981 SURFACE - K • 1.C 60 I ILI IV1•• - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE 160 UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 100CU 96.C 24.4 68.7 53.2 35.0 2C.3 10.9 5.9 3.8 1.5 0.7 0.1 8000 96.0 84.4 68.7 53.2 35.0 20.3 10.9 5.9 3.8 1.5 0.7 0.1 6000 56.C 24.4 62.7 53.2 35.0 20.3 10.9 5.9 3.8 1.5 0.1 0.1 4003 96.0 24.4 68.7 53.2 35.0 20.3 10.5 5.9 3.8 1.5 0.7 0.1 3000 96.0 84.4 68.7 53.2 35.0 20.3 10.9 5.9 3.8 1.5 0.7 0.1 2000 96.0 84.♦ 68.7 53.2 35.0 20.3 10.9 5.9 3.8 1.5 0.7 0.1 1000 53.1 81.8 86.4 51.3 33.5 19.2 10.3 5.5 3.5 1.3 0.4 900 90.9 79.1 24.6 49.1 12.4 18.4 9.8 5.2 3.3 1.3 0.4 603 68.1 71.2 22.4 47.8 31.0 17.5 9.2 4.9 3.1 1.1 0.♦ 400 82.5 72.1 52.0 44.1 28.3 15.6 8.1 4.2 2.6 0.9 0.3 300 18.9 66.8 55.1 41.6 26.5 14.4 7.4 3.8 2.3 C.8 200 71.1 61.8 49.1 36.6 22.9 12.1 6.0 3.0 1.8 0.6 150 64.7 56.0 44.2 32.6 20.1 10.3 5.0 2.4 1.4 100 58.7 5C.6 39.6 28.8 17.5 2.7 4.1 1.9 1.1 RO 54.6 47.C 36.5 26.3 15.8 7.7 1.6 1.6 0.9 6J 48.7 41.6 32.0 22.8 13.4 6.3 2.8 1.3 0.6 SO 44.4 37.9 28.9 20.3 11.8 5.4 2.4 1.0 0.5 40 40.2 34.1 25.9 18.0 10.2 4.5 2.0 0.8 0.4 30 34.9 29.♦ 22.1 15.0 8.♦ 3.6 1.5 0.5 20 27.7 23.2 11.1 11.3 6.1 2.4 0.9 10 18.2 15.0 10.6 6.1 3.4 1.2 AEI• SOIL LOSS FRCP WINO FROSICN IN TENS PER ACRE PER YEAR JANUARY.1961 C = 60 SURFACE - k • 0.7 I • 160 ILI IV144 - FLAT SMALL GRAIN RESIDUE IN IOUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 115C 2000 2250 2500 2150 3000 IN FEET 10000 67.2 58.3 46.0 34.1 21.1 11.0 5.4 2.6 1.6 0.5 8000 67.2 56.3 46.0 34.1 21.1 11.0 5.4 2.6 1.8 0.5 6000 67.2 58.3 46.0 34.1 21.1 11.0 5.4 2.6 1.6 0.5 4000 67.2 52.3 46.0 34.1 21.1 11.0 5.4 2.6 1.6 0.5 3000 67.2 58.3 46.0 34.1 21.1 11.0 5.4 2.8 1.6 0.5 2000 65.1 56.9 44.9 33.2 20.5 10.6 5.2 2.5 1.5 0.5 1000 60.1 51.9 40.6 29.7 18.1 9.0 4.3 2.C 1.2 800 58.2 50.2 39.2 28.5 17.3 8.6 4.1 1.9 1.1 600 54.8 41.1 36.6 26.4 15.9 7.7 3.6 1.1 1.0 400 50.7 43.4 33.! 24.0 14.2 6.7 3.1 1.4 0.8 300 46.9 40.1 3C.7 21.8 12.7 5.9 2.6 1.2 0.5 200 40.4 34.3 26.0 18.1 10.3 4.6 2.0 0.0 0.4 150 36.0 30.4 22.9 15.7 8.8 3.8 1.6 0.5 100 32.1 21.1 IC.1 13.6 7.5 3.1 1.3 0.4 80 29.1 24.4 18.0 12.0 6.5 2.6 1.0 60 24.0 20.0 14.5 9.5 5.0 1.5 0.1 50 21.8 18.1 13.0 8.4 4.3 1.6 0.6 43 19.5 16.1 11.5 1.3 3.7 1.3 30 15.8 13.0 5.1 5.6 2.8 0.9 20 12.0 5.1 6.7 4.0 1.9 0.4 10 6.1 4.8 3.1 1.7 0.1 Ifl• SOIL LOSS FRCP VINO EROSION IN TENS PER ACRE PEP YEAR JANUARY.19E1 C 60 SURFACE - k • C.5 I • 16C ILI IVI•• - FLAT SMALL GRAIN RESIDUE 16 PEUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1155E 2C0C 2250 2500 2750 3000 IN FEET 10000 46.0 41.1 31.6 22.4 13.2 8.1 2.6 1.2 0.5 8000 48.0 41.1 31.6 22.4 - 13.2 6.1 2.8 1.2 C.5 6003 48.0 41.1 31.6 22.4 13.2 6.1 2.8 1.2 0.5 4000 48.0 41.1 31.6 22.4 13.2 6.1 2.d 1.2 0.5 3000 47.2 40.4 31.0 22.0 12.9 6.0 2.7 1.2 0.5 2000 45.1 36.5 29.4 20.1 12.1 5.5 2.5 1.1 0.5 1000 40.3 34.2 26.0 18.0 10.3 4.6 2.0 0.8 0.4 800 38.7 32.8 24.8 17.1 9.7 4.2 1.6 C.2 0.3 600 35.2 29.8 22.3 15.2 8.5 3.6 1.5 0.5 400 31.7 26.7 15d 13.4 7.3 3.0 1.2 C.< 300 28.5 21.5 17.6 II.7 6.3 2.5 1.0 203 23.5 19.9 14.5 9.♦ ♦.9 1.5 0.7 150 23.7 17.1 12.3 7.8 4.0 1.5 0.5 100 17.3 14.3 10.1 6.3 3.1 1.1 80 14.8 12.1 8.5 5.2 2.5 0.8 60 12.2 9.9 6.8 4.1 1.9 0.4 50 10.4 8.4 5.7 3.3 1.5 0.3 40 6.6 6.9 4.6 2.6 1.2 0.2 30 6.4 5.1 3.3 1.8 0.7 20 4.0 3.1 7.C 1.0 0.4 10 1.2 1.3 0.7 • NOTE: Sell LOSS FOR VALUES WHERE •E• 15 LESS 1646 C.1 CR JREATER THAN 440.0 APE 807 SHOWN; OTHER VALUES NOT SHOWN ARE INVALID •• NOTE: VALUES SHDYN ARE FLAT SMALL GRAIN EOUIVALENI. NOT 'V' -69- (El' $^It 1055 FRCP WINO {805101 Ik TONS PER ACRE PEP YEAR JANUARY.1581 I • 134 SURFACE - K • 1.C LLI 1y144 FLAT SMALL CRlIN RESICUf 15 nr gtf5 PER ACRE UNSHELTERED DISTANCE O 250 500 750 1000 1250 1500 1750 2000 2250 25C0 2750 3000 IN FEET 10000 80.4 70.2 56.3 42.7 .21.2 14.5 7.7 4.C 2.4 0.9 0.3 8000 80.4 70.2 56.3 ♦2.1 27.2 14.9 7.7 4.0 2.4 0.9 0.3 6000 80.4 70.2 56.3 42.7 27.2 14.9 7.7 4.0 2.4 C.9 0.3 4000 80.4 70.2 52.3 42.7 27.2 14.9 7.7 4.0 2.4 0.9 0.3 3000 80.4 70.2 56.3 42.7 27.2 14.9 7.7 4.0 2.4 C.9 0.3 2000 80.4 70.2 56.3 42.7 27.2 14.9 7.7 4.0 2.4 0.9 0.3 1800 75.8 66.0 52.7 39.6 25.1 13.5 6.8 3.5 2.1 0.7 600 71.7 62.3 49.5 37.0 23.2 12.3 6.1 3.1 1.8 C.6 400 66.6 57.7 45.5 33.7 20.9 10.8 5.3 2.6 1.5 C.5 300 62.5 54.0 42.4 31.1 19.1 9.7 4.7 2.2 1.3 200 56.1 48.3 37.6 27.2 16.4 8.0 3.8 1.8 1.0 150 51.2 43.9 33.9 24.3 14.4 6.9 3.1 1.4 0.8 100 46.0 39.3 30.1 21.3 12.4 5.7 2.6 1.1 0.5 80 41.7 35.5 27.C 18.8 10.6 4.8 2.1 0.5 0.4 60 36.0 30.5 22.5 15.7 8.8 3.6 1.6 0.5 SO 33.0 27.8 20.8 14.1 7.5 3.2 1.3 0.4 40 30.2 25.3 18.8 12.6 6.8 2.8 1.1 0.4 30 24.6 20.5 15.C 9.8 5.1 2.0 0.7 20 19.5 16.2 11.5 10 12.3 10.0 6.9 4.1 1.9 0.4 1 Ills SOIL 1055 RACK WIND EROSION IN TOMS PER ACRE PER YEAR JANWCY•.19660 1 • 134 SURFACE - L • 0.1 ILI (VIP* - FLAT SNAIL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 SOC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 it. FEET 10000 56.3 46.4 31.1 27.3 16.5 8.1 3.8 1.8 1.0 6000 56.3 45.4 37.7 27.3 16.5 8.1 3.8 1.8 1.0 1.8 1.0 3000 56.3 43.4 37.7 27.3 16.5 8.1 3.8 1.8 1.0 2000 54.1 47.0 36.6 26.4 15.6 7.7 3.6 1.7 1.0 1600 46.2 41.3 31.1 22.5 13.2 6.2 2.8 1.2 0.6 11.7 400 39.1 33.2 25.1 17.3 9.8 4.3 1.8 0.8 0.3 300 35.6 30.1 22.6 15.4 8.6 3.7 1.5 0.5 200 3I.C 26.1 19.3 13.0 7.1 2.9 1.2 0.4 ISO 24.4 22.0 16.1 10.6 5.7 2.2 0.8 100 22.6 1P.9 13.1 8.8 4.6 1.7 0.6 80 20.2 17.2 12.4 7.9 4.1 1.5 0.5 60 16.6 13.6 9.6 5.9 2.9 1.0 50 14.4 11.8 8.2 5.0 2.4 0.6 40 12.8 12.4 1.2 4.3 2.0 0.4 30 10.3 6.3 5.6 3.3 1.5 C.3 20 6.7 5.3 '..5 1.9 0.8 10 3.1 2.4 1.5 0.7 l El4 5011. LESS FROM WINO EROSICk IN 1CNS PER ACRE PEP TEAR JANUARY`1981 SURFACE - K • 0.5 I • 134 ILI 181.4 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSMELTEPEO DISTANCE 0 250 S00 750 1000 1240 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 40.2 34.1 25.9 18.0 10.2 4.5 2.0 0.8 0.4 8000 40.2 34.1 25.9 18.0 10.2 4.5 2.0 C.8 0.4 6000 40.2 34.1 25.5 18.0 10.2 4.5 2.0 C.8 0.4 4000 38.8 32.9 24.9 17.2 9.8 4.3 1.8 0.8 0.3 3000 37.8 32.1 24.2 16.7 9.4 4.1 1.7 0.6 2000 36.8 31.2 23.5 16.1 9.1 3.9 1.6 0.2 1000 31.9 26.9 20.0 13.5 1.4 3.1 1.2 C.4 800 30.7 25.8 19.2 12.9 7.0 2.9 1.1 0.4 600 28.0 23.5 17.3 11.4 6.2 2.4 0.9 400 24.3 20.2 14.1 9.6 5.0 1.9 0.7 300 22.2 18.5 13.3 8.6 4.5 1.6 0.6 700 18.5 15.3 10.5 6.8 3.4 1.2 150 15.4 12.6 8.8 5.4 2.7 C.9 100 13.1 10.7 7.4 4.4 2.1 0.4 60 11.3 9.1 6.2 3.7 1.7 0.3 60 8.5 6.8 4.6 2.6 1.2 0.2 50 6.9 5.5 3.2 2.0 0.8 40 5.2 4.1 2.2 1.4 0.5 30 3.8 3.0 1.5 0.9 20 2.2 1.7 1.0 0.5 10 0.8 0.5 • NOTE; SOIL LOSS FCP VALUES WHERE •E' IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE MCI SHOWNI ETHER VALUES NOT SHOWN ARE INVALID 44 NCIE: VALUES SHOWN APE FLAT SPALL GRAIN F00114LE4I. PICT •V• -70- Ic1A snit LOSS-FROM MIND EROSION IN TONS PER ACPE PER YEAR JANUARY:-1981 60 SURFACE - M • 1.0 I • 86 ILI IVIS• - FLAT SMALL WAIN RESIDUE IN POUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 150C 1150 2000 2250 2500 2750 3000 IN FEET 10000 51.6 44.3 34.2 24.5 14.6 7.0 3.2 1.4 0.8 8000 51.6 44.3 34.2 24.5 14.6 7.0 3.2 1.4 0.8 6000 51.6 44.3 34.2 24.5 14.6 7.0 3.2 1.4 0.8 4000 51.6 44.3 34.2 24.5 14.6 7.0 3.2 1.4 0.8 3000 51.3 44.0 34.C 24.3 14.4 6.9 3.2 1.4 0.8 2000 49.4 42.3 _32.6 23.2 13.7 6.4 2.9 1.3 0.6 1000 44.4 37.9 28.5 20.3 11.8 5.4 2.4 1.0 0.5 800 42.6 36.3 27.6 19.3 11.1 5.0 2.2 0.1 0.4 600 38.8 32.9 24.5 11.2 9.7 4.3 1.8 C.! 0.1 400 34.4 25.1 21.8 14.8 8.2 3.5 1.4 0.5 300 31.5 26.5 19.7 13.2 1.3 3.0 1.2 C.4 200 26.4 22.1 16.1 10.6 5.7 2.2 0.8 150 22.7 18.9" 13.7 8.8 4.6 1.7 0.6 100 19.5 16.2 11.5 7.3 3.7 1.3 80 17.3 14.3 10.1 6.3 3.1 1.1 60 13.8 11.3 7.! 4.7 2.3 0.7 50 12.0 9.8 6.7 4.0 1.9 0.4 40 10.3 8.3 5.6 3.3 1.5 C.3 30 1.8 6.3 4.2 2.3 0.9 20 4.1 3.7 2.4 1.2 0.5 10 2.1 1.6 0.9 0.4 IEI4 SOIL LOSS FRCS WIND EROSION IN TONS PER ACRE PER YEAR JANUARY= 19660 SURFACE - K • 0.7 1 • 86 ILI (VISA - FLAT SMALL GRAIN RESIDUE Il PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 300 IN FEET 10000 36.1 30.6 22.5 15.7 8.8 3.8 1.6 0.5 8000 36.1 30.6 22.9 15.7 8.8 3.8 1.6 0.5 6000 36.1 30.6 22.9 15.7 8.8 3.8 1.6 0.5 4000 35.3 29.1 22.4 15.3 8.5 3.6 1.5 0.5 3000 34.3 29.0 21.7 14.8 8.2 3.5 1.4 0.5 2000 32.7 27.6 20.6 13.9 7.7 3.2 1.3 0.4 1000 27.8 23.3 17.1 11.3 6.1 2.4 0.9 800 26.5 22.1 16.2 10.7 5.7 2.2 0.9 600 23.1 15.1 14.3 9.3 4.9 1.8 0.7 400 21.0 17.4 12.5 8.0 4.1 1.5 0.5 300 18.6 15.4 10.5 6.9 3.5 1.2 200 15.0 12.3 6.6 5.3 2.6 0.8 150 12.7 10.3 1.1 4.3 2.0 0.4 100 10.4 8.4 5.7 3.3 1.5 C.3 80 8.6 6.9 4.6 2.6 1.2 0.2 60 5.6 4.4 2.5 1.6 0.6 SO 4.6 3.6 7.3 1.2 0.5 , 40 3.8 3.C 1.5 0.9 30 2.6 2.0 1.2 0.6 20 1.5 1.1 0.6 10 0.6 0.3 IEIA SOIL LOSS FROM VINO EROSICN IN IONS PER ACRE PEP YEAR JANUARY:1981 C C . 60 SURFACE - K • C.!_ I • Pt ILI IVI•• - FLAT SMALL CRAIN RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 25.! 21.5 15.1 10.3 5.5 2.1 0.8 8000 25.8 21.5 15.7 10.3 5.5 2.1 0.8 6000 25.8 21.5 15.7 10.3 5.5 2.1 0.8 4009 24.3 20.3 14.1 9.6 5.1 1.9 0.7 3000 23.5 19.5 14.2 9.2 4.8 1.8 0.7 2009 21.8 18.1 13.0 6.4 4.3 1.6 0.6 1000 18.5 15.2 10.8 6.8 3.4 1.2 800 16.1 13.9 9.8 6.1 3.0 1.0 600 14.8 12.1 8.5 5.2 2.5 0.8 400 12.6 10.2 7.0 4.2 2.0 0.4 300 10.9 8.8 6.C 3.5 1.6 0.3 200 8.1 6.5 4.3 2.4 1.0 150 5.6 4.4 2.9 1.6 0.6 100 4.2 3.3 2.1 1.1 0.4 80 3.4 1.6 1.6 0.6 60 2.1 1.6 0.9 0.4 50 1.1 1.3 0.7 40 1.3 1.0 0.5 30 0.9 0.5 20 10 • NOTE: SOIL LOSS FOP VALUES WHERE •E• IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE MCI SHOWN; OTHER VALUES NOT SHCWN APE INVALID •• NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT 3V. -71- (Ely Sell LESS FPCM NINO EROSICH IN TONS PER ACRE PEP YEAR JANUARV.19860 SURFACE - K 1.C I - 56 ILI (V1.4 - FLAT SHALL GRAIN RESIDUE IN POUNDS PER ACRE UNSAELTFRED DISTANCE 0 250 500 750 1000 1250 1500 11SSC 2000 2250 2500 2750 3000 IN FEAT 10000 33.6 2P.3 21.2 14.4 8.0 3.3 1.4 C.5 3300 33.E 28.3 21.2 14.4 8.0 3.3 1.4 0.5 6000 33.6 28.3 21.2 14.4 8.0 3.3 1.4 0.5 4000 32.7 21.5 20.5 13.9 1.6 3.2 1.3 0.4 7003 31.7 76.6 19.8 13.3 7.3 7.) 1.2 0.4 2000 30.C 25.2 18.1 12.5 6.8 2.8 1.1 0.4 1001 24.9 20.1 15.1 9.9 5.2 2.0 0.8 800 23.8 l .8 14.4 5.3 4.9 1.8 0.1 600 21.5 17.8 12.8 8.2 4.2 1.6 0.6 ♦00 18.8 15.5 11.1 7.0 3.5 1.2 300 16.4 13.5 5.5 5.9 2.9 1.0 200 13.4 10.9 7.5 4.5 2.2 0.7 150 10.9 4.8 6.0 3.5 1.6 0.3 100 8.6 6.9 4.6 2.6 1.2 0.2 8) 6.E 5.4 3.6 2.0 0.8 60 4.5 3.5 2.2 1.2 0.4 50 2.7 2.9 1.8 0.9 ♦1 3.C 2.3 1.4 0.7 30 1.9 1.4 C.E 20 1.1 0.8 0.4 10 JAAU A I EI• SOIL LOSS FROM NAND ERRS ACA IA TCNS PER ACRE PEP YEARCY 198 x60 I . 5t SURFACE - K . 0.1 ILI 191.1.4 - FLAT SMALL GRAIN RESIDUE IN PCUMOS PER ACRE UNSHELTERED DISTANCE C 250 500 750 1000 1250 1500 175C 2000 2250 2500 2150 3000 IN FEET 9.2 4.8 1.8 0.7 10000 23.5 15.6 14.2 8000 23.5 19.6 14.2 9.2 4.8 1.8 0.1 4.8 1.8 0.1 6001 23.4 15.5 14.1 9.2 4.4 1.8 0.6 4000 27.2 18.4 13.3 8.6 3000 21.3 17.7 12.7 8.1 4.2 1.5 0.6 2000 19.5 16.1 11.5 7.3 3.7 1.3 1000 15.9 13.0 9.2 5.7 2.8 0.9 800 14.6 11.9 8.3 5.1 2.5 0.8 600 13.1 10.6 1.4 4.4 2.1 0.4 400 10.1 8.6 5.9 3.5 1.6 0.3 300 4.1 1.3 4.9 2.8 1.3 0.3 200 6.2 4.9 3.2 1.8 0.7 ISO 4.5 3.5 2.2 1.2 0.4 100 3.4 2.6 1.6 0.8 80 2.5 1.5 1.2 0.5 63 1.7 1.3 0.1 50 1.3 1.0 0.5 40 0.5 C.5 30 0.1 0.4 20 10 AEI• SOIL LOSS FRCP HIND EROSICA IA TENS PEP ALPE PEP YEAR JANUAPY.1981 C = 60 SURFACE - A . 0.5 I - 50 ILI IV1•• - FLAT SMALL GRAIN RESIDUE IN POUNCS PER SERF UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1150 2000 2250 2500 2750 3000 IN FEET 10003 16.8 13.8 5.7 6.1 3.0 1.0 8000 16.8 13.8 5.1 6.1 3.0 1.0 6000 16.1 11.2 5.3 5.8 2.8 1.0 4000 14.8 12.1 P.5 5.2 2.5 C.8 3900 14.0 11.4 7.5 4.8 2.3 0.1 2000 12.7 1C.4 7.1 4.3 2.0 0.4 1000 9.5 P.O 5.4 3.1 1.4 0.3 800 8.7 7.0 4.7 2.7 1.2 0.2 600 6.8 5,4 3.5 2.0 0.8 400 4.8 1.8 2.4 1.3 0.5 300 3.5 3.0 1.5 0.5 200 2.5 1.5 1.2 0.5 150 1.1 1.3 0.7 100 1.1 0.8 0.4 80 0.8 C.5 60 50 40 30 20 10 • NOTE: SOIL LESS FCR VALUES NHEPE •E• IS LESS TFAN C.1 ER GREATER THAN 440.0 APE NOT SHOWN; ETHER VALUES NOT SHENA ANF INVALID 44 NOTE: VALUES SHOWN APE FLAT SMALL GRAIN EOLIVALFNI. ACT •v• -72- IEI• SOIL LOSS FROM WINO EROSICN IN TENS PER ACRE PER TEAR JANUARY.1981 C • 60 SURFACE - M • 1.0 I = 46 ILI 11/104. - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 25C0 2750 3C00 IN FEET 10000 28.8 24.1 17.8 11.9 6.4 2.6 1.0 8000 28.8 24.1 17.8 11.9 6.4 2.6 1.0 6000 28.8 24.1 17.6 11.9 6.4 2.6 1.0 4000 27.1 22.7 16.6 11.0 5.9 2.3 0.9 3000 25.8 21.6 15.8 10.3 5.5 2.1 0.8 2000 24.2 20.1 14.f 9.5 5.0 1.9 0.7 1000 21.0 17.4 12.5 8.0 4.1 1.5 0.5 800 19.4 16.1 11.5 7.3 3.7 1.3 600 17.2 14.1 10.0 6.2 3.1 1.1 400 14.6 11.9 8.3 5.1 2.5 0.8 300 12.5 10.5 7.3 4.4 2.1 C.4 200 10.0 0.1 5.5 3.2 1.5 0.3 150 7.5 6.0 4.0 2.2 0.9 100 5.1 4.0 2.5 1.4 0.5 80 4.3 3.3 2.1 1.1 0.4 60 3.C 2.3 1.4 0.7 50 2.2 1.7 1.0 0.5 40 1.7 1.3 0.7 30 1.2 0.9 C.5 20 0.7 C.4 IO (Et* SOIL LOSS FRCP WIND EROSION IN TCNS PER ACRE PER YEAR JANUARY.1981 C - 60 SURFACE - N • 0.7 I • 48 ILI - 411100 - FLAT SMALL GRAIN RESIDUE IN ►CUNOS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 20.2 16.7 11.5 7.6 3.9 1.4 0.5 8000 20.2 16.7 11.5 7.6 3.9 1.4 0.5 6000 19.f 16.2 11.6 7.3 3.7 1.3 4000 18.4 15.1 10.8 6.8 3.4 1.2 3000 17.2 14.1 10.0 6.2 3.1 1.1 2000 15.5 12.7 8.5 5.5 2.7 0.5 1000 12.6 10.2 7.1 4.2 2.0 0.4 800 11.7 9.4 6.5 3.8 1.8 0.3 600 9.9 8.0 5.4 3.2 1.4 0.3 40) 7.E 6.3 4.2 2.3 0.9 300 6.1 4.8 3.1 1.7 0.7 200 4.2 3.3 2.1 1.1 0.4 150 3.C 2.3 1.4 0.7 100 1.5 1.4 0.8 80 1.5 1.1 0.f 60 0.9 0.5 50 0.7 C.4 40 0.5 C.3 30 20 10 LEI• SOIL LOSS FROM WINO EROSION IN IONS PER ACRE PER YEAR JANUARY.1981 C = 60 SURFACE - N • C.`_ 1 = 48 ILI (V1•• - FLAT SMALL GRAIN RESIDUE IN POUNCS PER ACRE UNSHELTERED DISTANCE C 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 14.4 11.8 P.2 5.0 2.4 0.8 8000 14.4 11.8 8.2 5.0 2.4 0.8 6000 13.8 11.2 1.E 4.7 2.3 0.1 4000 12.5 10.5 7.2 4.4 2.1 0.4 3000 11.7 4.5 6.5 3.8 1.8 0.4 2003 10.6 8.6 5.8 3.4 1.6 C.3 1000 1.5 6.0 4.0 2.2 0.9 800 6.3 5.0 3.3 1.8 0.7 600 4.7 3.7 2.3 1.2 0.5 400 3.6 2.8 1.@ 0.8 300 2.6 2.0 1.2 0.6 700 1.6 1.2 0.7 150 1.1 C.8 C.4 100 0.7 C.4 80 60 50 49 30 20 10 • NOTE: SOIL LOSS FOR VALUES WHERE •E' IS LESS TFAN C.1 CR GREATER THAN 440.0 ARE NOT SHOWN: OTHER VALUES NOT SHCWN APE INVALID •• NOTE: VALUES SFOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT 'V• -73- (EI. 571 TL LC 55 FRCS WINO EROS ICN IN TCNS PER ACRE PEP TEAR JANUAiY-I9B 60 I • 38 SURFACE - K' • 1.0 IVI18110* - FLAT SMALL GRAIN RESIDUE IN PCUKCS PER ACRE ELI 3000 UNSHELTERED DISTANCE ELTERE C 250 500 750 1000 1250 1500 1TSC 2000 2250 2500 2750 IN FEET 10000 22.8 18.9 13.7 8.9 4.6 1.1 0.6 8000 22.8 18.9 13.7 8.9 4.6 1.7 0.6 6000 22.6 18.8 13.6 8.8 4.6 1.7 0.6 4000 21.4 17.7 12.8 8.2 4.2 1.5 0.6 3000 20.4 16.9 12.1 7.7 3.9 1.4 0.5 2000 18.6 15.4 10.9 6.9 3.5 1.2 1000 14.9 12.2 8.5 5.2 2.6 0.8 809 14.C 11.4 1.9 4.8 2.3 0.7 600 12.4 10.1 6.9 4.1 2.0 0.4 400 10.1 8.1 5.5 3.2 1.5 C.3 300 8.5 6.8 4.5 2.6 1.2 0.2 200 5.6 4.4 2.9 1.6 0.6 150 4.2 3.2 2.C 1.1 0.4 100 3.0 2.3 1.4 0.T 80 2.2 1.6 1.C 0.5 60 1.5 1.1 0.6 50 1.1 C.8 0.4 40 0.8 0.5 30 0.6 0.3 20 10 AEI• SOIL LOSS FROM WIND FROSICN IN TCNS PEP ACRE PER TEAR JANUARY.1981 C 60 SURFACE - K • 0.7 • 38 111 IV)!' - FLAI SMALL GRAIN RESIDUE IN PCUNDS PER ACRE UNSHELTERED DISTANCE C 250 900 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 16.0 13.1 9.2 5.7 2.8 C•9 • 6000 16.0 13.1 9.2 5.7 2.8 0.9 6000 15.2 12.4 8.7 5.3 2.6 0.9 4000 14.2 11.6 8.1 4.9 2.4 0.8 3000 13.2 10.7 7.4 4.5 2.1 0.4 2000 12.0 9.8 6.7 4.0 1.9 0.4 1000 9.1 7.3 4.9 2.8 1.3 0.3 800 7.9 6.4 4.2 2.4 1.0 600 5.9 4.7 3.0 1.7 0.6 400 4.4 3.5 2.2 1.2 0.4 300 3.4 2.7 1.7 0.8 200 2.1 1.6 1.0 0.4 150 1.5 1.1 0.6 100 1.0 0.5 80 0.7 0.4 60 90 40 30 20 10 IE1• SOIL LOSS FROM WIND EROSION TN TONS PEP ACRE PER TEAR JANUARY.1981 C • 60 SURFACE - K • 0.5 I • 38 ILI (VIA* - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 11.4 5.2 6.3 3.7 1.7 0.3 8000 11.3 9.2 6.3. 3.7 1.7 0.3 6000 10.6 8.5 5.! 3.4 1.6 0.3 4000 9.8 7.9 5.3 3.1 1.4 0.3 3000 8.7 6.9 4.6 2.7 1.2 0.2 2000 7.5 6.0 3.5 2.2 0.9 1000 4.5 3.5 2.2 1.2 0.5 800 4.0 3.1 1.9 0.9 600 3.1 2.4 1.5 0.7 400 1.9 1.5 0.8 300 1.4 1.1 0.6 200 0.8 0.5 ISO 0.5 0.3 100 80 60 50 40 30 20 10 • NOTE; SOIL LOSS PCP VALUES WHERE •E• IS LESS THAN 0.1 CR GREATER THAN 440.0 ARE NCI SHOWN; CTHER VALUES NOT SHOWN ARE INVALID •• NDIE: VALUES SHOW. ARE FLAT SMALL GRAIN EQUIVALENT, 101 •V• -74- /EI• SOIL LOSS FROM WINO EROSICN IN TCNS PEP ACRE PER YEAR JANUARY.1981 C • 60 SURFACE - R • 1.0 I • 21 ILI FVI•+ - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 S00 750 1000 1250 1500 1150 2000 2250 2500 2750 3000 IN FEET 10000 12.6 10.2 7.1 4.2 2.0 0.4 8000 12.6 1C.2 1.1 4.2 2.0 0.4 6000 11.5 9.6 2.6 3.9 1.8 0.4 4000 11.1 5.0 6.1 3.6 1.7 0.3 3000 9.9 8.0 5.4 3.1 1.4 0.3 2000 5.! 7.1 4.8 2.7 1.2 0.2 1000 5.3 4.2 2.1 1.4 0.6 800 4.6 3.6 2.3 1.2 0.5 600 3.8 2.9 1.8 0.9 400 2.6 2.0 1.2 0.6 300 1.8 1.4 C.1 200 1.0 0.6 150 0.7 0.4 100 80 60 50 40 30 20 19 FEI• SOIL LOSS FROM WIND EROSION IN TONS PER ACRE PEP YEAR JANUARY.1981 C • 60 SURFACE - M • 0.7 I • 21 ILI I - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 8.8 7.1 4.7 2.7 1.2 0.2 8000 8.5 6.8 4.5 2.6 1.1 0.2 6000 7.7 6.2 4.1 2.3 0.9 4000 7.0 5.6 3.7 2.0 0.8 3000 5.9 4.7 3.0 1.6 0.6 2000 4.6 3.6 2.3 1.2 0.5 1000 3.1 2.4 1.5 0.7 800 2.5 1.9 1.2 0.5 600 1.8 1.4 0.7 400 1.2 0.9 0.5 300 0.! C.5 200 150 100 80 60 50 40 30 20 10 CFI+ SOIL LOSS FRCP WIND EROSICN IN TCNS PER ACRE PER YEAR JANUARY.1981 C • 60 SURFACE - M • 0.5 I • 21 ILI IV H• - FLAT SMALL GRAIN RESIDUE IN POGNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 6.3 5.0 3.2 1.8 0.7 P000 5.9 4.7 3.C 1.7 0.6 6000 5.5 4.5 2.8 1.5 0.6 4000 4.6 3.6 2.3 1.2 0.5 3000 4.3 3.4 2.1 1.1 0.4 2000 3.6 2.8 1.7 0.8 1000 2.0 1.5 0.8 800 1.7 1.3 0.7 600 1.2 0.9 C.5 400 0.@ 0.5 300 0.6 0.4 200 150 100 80 60 50 40 30 20 10 • NOTE: SOIL LOSS FCP VALUES WHERE 'F' 15 LESS THAN 0.1 CP GREATER THAN 440.0 ARE NCT SHOWN: OTHER VALUES NOT SHOWN ARE INVALID ++ NCTF: VALUES SHCWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT 'V' -75- IE1• SOIL LOSS FROM KIND EROSION IN TENS PEP ACRE PER YEAR JANUA`Y`1986D I • 12 SURFACE L 1.0 IU (Bp.. - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNQISAECE0 GHT E F*8NCE 0 250 SOC 150 1000 1250 1500 ITSC 2000 2250 2500 2750 3000 IN FEET 10000 7.2 5.7 3.8 2.1 0.8 8000 6.8 5.4 3.6 2.0 0.8 6000 6.3 5.0 3.3 1.8 0.7 4000 5.2 4.1 2.6 1.4 0.5 3000 4.1 3.7 2.3 1.2 0.5 2000 3.5 3.1 1.5 0.9 1000 0.5 800 1.9 1.4 1.1 600 1.4 1.1 0.6 400 0.5 0.5 300 0.7 0.4 200 150 100 80 60 50 40 30 20 •10 1E1• SOIL LCSS FRCM WINO EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 SURFACE - K + 0.7 I . 12 Ill IV)** - FL AI SMALL GRAIN RESIDUE IN POUNDS PEP ACRE UNSHELTERED .750 500 750 1000 1250 1500 1750 2000 2250 2500 2150 3000 DISTANCE 0 IN FEET 10000 S.C 4.C 2.5 1.4 0.5 8000 4.8 3.8 2.4 1.3 0.5 6000 4.6 3.6 2.3 1.2 0.5 4000 4.0 3.1 1.5 0.9 3000 3.8 2.8 1.7 0.8 2000 2.9 2.2 1.4 0.6 1000 1.7 1.3 C.7 B00 1.4 1.1 C.6 600 1.0 0.5 400 0.7 0.4 300 200 ISO 100 83 60 50 40 30 20 10 1E)• SOIL LOSS FROM WIND EROSION Ih TONS PER ACRE PEP YEAR JANUARY.1981 SURFACE - N • 0.5 I • 12 ILI (VI•• - FLAT SMALL GPAIN RESIDUE lA POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750. 3000 IN FEET 10000 3.6 2.8 1.7 0.8 8000 3.3 2.5 1.6 0.7 6000 3.C 2.3 1.4 0.7 4000 2.4 1.8 1.1 C.5 3000 7.0 1.5 0.8 7000 1.7 1.3 0.7 1000 1.0 0.6 800 0.5 0.5 600 0.6 0.4 400 300 200 150 100 80 60 50 40 30 20 10 • NOTE: SOIL LOSS FOP VALUES WHERE 'F' IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NCI SHOIN: OTHER VALUES NOT SHOWN APE INVALID 8• NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT 'V' -76- 1 IFI• SOIL LOSS FROM WINO EROSION IN IONS PEP ACRE PEP TEAR JANUARY=190C 60 SURFACE - 4 - 1.C 1 • 310 ILI IVI•• - FLAT SMALL GRAIN RESIDUE IN PCUNGS PER ACRE UNSHELTERED DISTANCE C ?50 900 750 1000 1250 1500 175C 2000 2250 2500 2150 3000 IN FEET 10000 248.0 227.1 155.1 174.4 134.1 104.6 10.9 51.0 39.2 23.6 15.5 4.5 3.0 8000 248.0 227.1 199.1 114.4 134.1 104.6 70.9 51.0 39.2 23.6 15.5 4.5 3.0 6000 248.C 221.1 155.7 174.4 134.7 104.6 10.9 51.0 39.2 23.6 15.5 4.5 3.0 4000 248.0 221.1 199.1 174.4 134.7 104.6 10.9 51.0 39.2 23.6 15.5 4.5 3.0 3000 248.0 221.1 199.7 114.4 134.7 104.6 10.9 51.0 39.2 23.6 15.5 4.5 3.0 2000 248.0 227.1 159.1 114.4 134.7 104.6 10.9 51.0 39.2 23.6 15.5 4.5 3.0 1000 248.0 221.1 159.1 174.4 134.1 104.6 10.9 51.0 39.2 23.6 15.5 4.5 3.0 000 248.0 221.1 199.1 174.4 134.7 104.6 10.9 51.0 34.2 23.6 15.5 4.5 3.0 600 248.0 227.1 159.7 174.4 134.7 104.6 10.9 51.0 39.2 23.6 15.5 4.5 3.0 400 248.0 227.1 159.1 174.4 134.7 104.E 70.9 51.0 39.2 23.6 15.5 4.5 3.0 300 245.5 224.7 157.4 172.2 132.8 102.8 69.5 49.8 38.3 22.9 15.0 4.3 2.5 200 238.0 717.5 190.7 165.6 127.0 91.4 65.3 46.4 35.4 20.9 13.5 3.8 2.5 ISO 230.5 210.4 183.5 159.1 121.4 92.1 61.3 43.2 32.6 15.0 12.2 3.4 2.2 100 223.0 201.2 177.2 152.7 115.0 87.0 57.5 40.0 30.1 17.3 10.5 3.0 2.0 80 215.5 196.1 170.5 146.3 110.3 82.0 53.1 37.0 27.7 15.6 9.1 2.6 1.1 60 201.0 184.3 159.4 135.1 101.3 11.5 41.7 12.3 23.9 13.1 8.0 2.1 1.4 50 193.6 115.4 1•.1.2 127.9 94.1 68.1 ♦l.5 29.C 21.3 11.4 6.8 1.8 1.1 40 185.8 164.0 144.1 121.5 89.3 63.4 40.1 26.4 14.2 10.1 6.0 1.5 1.8 30 110.5 151.6 131.0 109.1 19.0 54.6 33.6 21.8 15.6 7.9 4.5 1.l 0.6 20 148.1 133.2 112.3 91.9 65.1 43.1 25.8 15.9 11.1 5.1 2.9 0.7 10 111.1 103.8 05.9 68.2 46.4 28.5 16.1 9.3 6.2 2.6 1.3 0.2 1118 SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PER TEAR JANUART.1501 SURFACE - K • 0.1 I • 310 ILI (Vie. - FLAT SMALL GRAIN RESIDUE 11 POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 SOC 150 1000 1250 1500 1756 2000 2250 2500 7150 3000 IN FEET 0.6 10000 173.6 156.5 133.7 111.6 81.1 56.4 35.0 72.1 16.3 8.3 4.0 1.7 8000 173.6 156.5 133.7 111.6 61.1 56.4 35.0 22.1 16.3 0.3 4.8 1.2 0.6 6000 173.6 156.5 133.7 111.6 01.1 56.4 35.0 22.1 16.3 0.3 4.8 1.2 0.6 4000 113.E 156.5 133.7 111.6 01.1 56.4 35.0 22.7 16.3 8.3 4.8 1.2 0.6 3000 173.6 156.5 133.1 111.6 81.1 56.4 35.0 22.7 16.3 8.3 4.8 1.2 0.6 2000 173.E 156.5 133.7 111.6 81.1 56.4 35.0 22.7 16.3 0.3 4.6 1.2 0.6 1000 173.6 156.5 133.1 111.6 81.1 56.4 35.0 22.1 16.3 8.3 4.8 1.2 0.6 800 113.0 156.0 133.2 111.1 00.7 56.1 34.8 22.55 16.1 E.2 4.1 1.2 0.6 600 166.4 151.1 129.2 101.5 71.7 53.5 33.0 21.2 15.1 1.6 4.3 1.1 0.6 400 163.6 141.3 125.3 103.8 74.7 51.0 31.3 19.5 14.1 7.0 3.9 0.9 0.5 300 159.1 142.9 121.2 100.1 200 147.9 132.4 111.6 91.3 64.6 42.1 25.5 15.7 11.0 5.2 2.0 0.8 C.5 6 150 140.1 125.2 105.1 85.4 59.8 38.9 23.0 13.9 9.6 4.4 2.4 0.2 100 131.8 111.5 50.1 79.1 54.9 35.0 20.4 12.1 8.3 3.1 1.9 0.2 80 124.0 110.2 91.6 73.3 50.3 31.5 18.0 IC.6 7.1 3.1 1.6 0.2 60 112.0 99.9 02.4 65.1 44.0 26.8 15.0 8.5 5.6 2.4 1.2 0.2 SO 106.8 94.3 71.4 60.8 40.1 24.3 13.4 1.5 4.9 7.0 1.0 0.1 40 101.3 09.3 13.0 56.9 37.6 22.2 12.1 6.1 4.3 1.1 0.0 0.1 30 91.2 00.0 64.9 49.9 32.6 18.5 9.8 5.3 3.3 1.3 0.4 1 A0 10 57.4 49.4 38.6 28.0 16.9 8.4 3.9 1.8 1.1 1214 SOIL LESS FROM WIND EROSION IN TENS PER ACRE PER TEAR JANUART.1581 SURFACE - K • 0.3 I • 310 ILI IV14• - FLAT SHALL SPAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 SOO 150 1000 1250 1500 17SC 2000 2250 2500 2150 3000 IN FEET 10000 124.0 110.2 91.6 73.3 50.3 31.5 18.0 10.6 7.1 3.1 1.6 0.2 8000 124.0 110.2 91.6 73.3 50.3 31.5 18.0 10.6 7.1 3.1 1.6 0.2 6000 124.0 110.2 51.6 13.3 50.3 31.5 18.0 10.6 7.1 3.1 1.6 0.2 4000 124.0 110.2 91.6 733 50.3 31.5 18.0 10.6 7.1 3.1 1.6 0.2 3000 124.0 110.2 91.6 13.3 50.3 31.5 18.0 10.6 1.1 3.1 1.6 0.2 2000 124.C 110.2 91.6 73.3 50.3 31.5 18.0 10.6 7.1 3.1 1.6 0.2 1000 120.3 106.0 88.5 70.6 48.2 29.9 17.0 5.9 6.6 2.8 1.4 0.2 800 111.7 104.4 06.♦ 68.6 46.7 28.8 16.3 9.4 6.2 2.1 1.3 0.2 600 114.1 101.1 83.4 66.1 44.7 21.3 15.3 8.8 5.8 2.4 1.2 0.2 400 100.2 95.6 78.6 61.8 41.4 24.9 13.8 7.7 5.1 2.1 1.C 0.2 300 103.8 91.6 75.0 58.7 39.1 23.2 12.1 7.1 4.6 1.8 0.9 0.1 200 55.1 83.6 66.0 52.6 34.5 19.9 10.1 5.8 3.1 1.4 0.4 150 81.5 76.1 61.9 41.4 30.1 11.3 9.1 4.8 3.0 1.1 0.4 100 80.1 69.9 56.1 42.4 27.1 14.0 7.6 3.9 2.4 0.9 0.3 nO 75.0 65.3 52.0 39.1 24.1 13.2 6.7 3.4 2.1 0.1 60 61.4 58.5 46.2 34.3 21.3 11.0 5.4 2.1 1.6 0.5 SO 62.1 53.6 42.1 30.9 18.9 9.6 4.6 2.2 1.3 40 51.6 49.6 36.1 28.1 17.0 8.4 4.0 1.9 1.1 30 50.9 43.6 33.7 24.1 14.3 6.8 3.1 1.4 0.8 20 41.3 35.1 26.1 18.6 10.6 4.8 2.1 C.5 0.4 10 29.2 24.5 16.1 12.0 6.5 2.6 1.0 • NOTE: SOIL LOSS FOP VALUES WHERE 'E• IS LESS THAN 0.1 CP GREATER THAN 440.0 ARE MCI SHOWN; ETMER VALUES 1401 SH[WM ARE INVALID •• MCIE: VALUES SFOWM APE FLAT SMALL GRAIN EQUIVALENT. NCI 'V• -77- CEP' SOIL LESS FROM NIND EROSION IM TENS PER ACRE PEP TEAR JANUARY..1981 SURFACE - R • 1.C 1 • 250 ILI IVIN - FLAT SMALL GRAIN RESIDUE 1F POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 2C0.C 18(.4 156.8 133.2 99.2. 72.1 4663 31.3 23.1 12.6 7.6 2.0 1.3 8000 200.0. 181.4 156.8 133.2 99.2 72.1 46.3 31.3 23.1 12.6 7.6 2.0 1.3 6000 200.0 181.4. 156.8 133.2 99.2 72.1 46.3 31.3 23.1 12.6 7.6 2.0 1.3 4000 200.0 181.4 156.8 133.2 99.2 72.1 46.3 31.3 23.1 12.6 7.6 2.0 1.3 3000 200.0 181.4 156.8 133.2 59.2 72.1 46.3 31.3 23.1 12.6 7.6 2.0 1.3 2000 200.0 181.4. 156.8 133.2 59.2 72.1 46.3 31.3 23.1 12.6 7.6 2.0 1.3 1000 200.0 181.4 156.8 133.2 99.2 72.1 46.3 31.3 23.1 12.6 7.6 2.0 1.3 800 200.0 181.4 156.8 133.2 99.2 72.1 46.3 31.3 23.1 12.6 7.6 2.0 1.3 600 200.0. 181.4 156.8 133.2 99.2 72.1 46.3 31.3 23.1 12.6 7.6 2.0 1.3 400 194.: 176.2 151.9 128.6 55.3 68.6 43.8 29.3 21.5 11.6 6.9 1.8 1.1 300 189.2 171.2 147.3 124.3 91.7 65.5 41.6 27.6 20.1 10.7 6.3 1.6 1.0 200 181.5 164.0 140.6 118.0 86.4 60.9 38.3 25.1 18.2 9.5 5.5 1.4 0.8 150 172.4 155.4 132.6 110.6 80.3 55.7 34.6 22.3 16.0 8.1 4.7 1.1 0.6 100 164.0 147.5 125.4 103.9 74.8 51.1 31.3 19.9 14.1 7.0 4.0 1.0 0.5 80 155.0 135.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 C.4 60 143.3 128.2 101.8 87.6 61.8 40.5 24.0 14.7 10.2 4.7 2.5 0.2 50 135.5 120.9 101.2 81.9 57.1 36.8 21.5 12.5 8.8 4.0 2.1 0.2 40 127.4 113.4 94.4 75.8 52.3 33.0 19.0 11.2 7.6 3.4 1.7 0.2 30 114.5 101.5 83.8 66.4 44.9 27.5 15.4 8.8 5.8 2.5 1.2 0.2 20 101.3 89.3 73.0 56.9 37.8 22.2 12.1 6.7 4.3 1.7 0.8 0.1 10 76.4 66.5 53.1 40.0 25.3 13.7 6.9 3.5 2.2 0.7 LEI* $011. LOSS FROM WINO EROSION IN TENS PEP ACRE PER TEAR JANUARV.19810 SURFACE - R' • 0.7 I • 250 IL) 11164 - FLAT SMALL GRAIN RESIDUE 14 POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 SOC 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 140.0 125.1 105.0 85.3 59.8 38.9 22.9 13.5 9.6 4.4 2.4 0.2 8000 140.0 125.1 ICS.C 85.3 59.8 38.9 22.9 13.5 9.6 4.4 2.4 0.2 6000 140.0 125.1 105.0 85.3 59.8 38.9 22.9 13.4 5.6 4.4 2.4 0.2 4000 140.0 125.1 1C5.C 85.3 59.8 38.9 22.9 13.9 9.6 4.4 2.4 0.2 3000 140.0 125.1 I05.C 85.3 59.8 38.9 22.9 13.9 9.6 4.4 2.4 0.2 2000 140.0 125.1 105.0 85.3 59.8 38.9 22.9 13.9 9.6 4.4 2.4 0.2 1000 138.4 123.6 103.E 84.1 58.8 38.1 22.4 13.6 9.3 4.3 2.3 0.2 800 135.5 120.9 101.2 81.9 57.1 36.8 21.5 12.5 8.8 4.0 2.1 0.2 600 132.5 118.1 98.7 79.6 55.3 35.3 20.6 12.3 8.4 3.8 2.0 0.2 400 125.9 112.0 93.2 74.7 51.4 32.4 18.6 10.9 7.4 3.3 1.7 0.2 300 120.0 106.5 88.3 70.3 48.0 25.8 16.9 9.8 6.6 2.8 1.4 0.2 200 111.5 98.6 81.2 64.1 43.3 26.2 14.6 8.3 5.5 2.3 1.1 0.2 150 104.3 92.0 75.4 59.0 39.4 23.4 12.8 7.1 4.6 1.9 0.9 0.1 100 97.1 85.5 69.6 54.0 35.6 20.7 11.1 6.1 3.9 1.5 0.7 0.1 80 91.4 80.3 65.0 50.1 32.7 18.6 9.9 5.3 3.4 1.3 0.4. 60 81.7 71.4 57.3 43.5 27.9 15.3 7.9 4.1 2.5 C.9 0.3 S0 76.2 66.7 53.3 40.1 25.4 13.7 7.0 3.5 2.2 0.7 40 71.! 62.4 49.6 37.0 23.2 12.3 6.1 3.1 1.9 0.6 30 65.7 56.9 44.9 33.2 20.5 10.6 5.2 2.5 1.5 0.5 20 53.0 45.5 35.2 25.3 15.1 7.3 3.4 1.5 0.9 10 37.8 32.0 24.2 16.6 9.4 4.1 1.7 0.6 (E14 SOIL LOSS FROM NINO EPOSICI. IN TONS PER ACRE PER YEAR JANUARY.1981 SURFACE - K • 0.5. I • 25C 111 (VI** - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 100.0 88.-1 71.9 56.0 37.1 21.7 11.8 6.5 4.2 1.7 0.8 0.1 8000 100.0 88.1 71.9 56.0 37.1 21.7 11.8 6.5 4.2 1.7 0.8 0.1 6000 100.0 88.1 71.5 56.0 37.1 21.7 11.8 6.5 4.2 1.7 0.8 0.1 • 4000 100.0 88.1 71.9 56.0 37.1 21.7 11.8 6.5 4.2 1.7 0.8 0.1 3000 100.C 88.1 71.9 56.0 37.1 21.7, 11.8 6.5 4.2 1.7 0.8 0.1 2000 59.3 87.4 71.4 55.5 36.7 21.5 11.6 6.4 4.1 1.6 0.8 0.1 1000 94.6 83.1 67.6 52.2 34.3 19.7 10.6 5.7 3.6 1.4 0.4 800 92.C 80.8 65.5 50.5 33.0 18.8 10.0 5.4 3.4 1.3 0.4 600 87.1 76.3 21.6 47.1 30.5 17.1 9.0 4.7 3.0 1.1 0.3 400 80.8 70.6 56.6 42.9 27.5 15.1 7.8 4.0 2.5 C.9 0.3 300 76.5 66.6 53.2 40.1 25.4 13.7 6.9 3.5 2.2 0.7 200 69.1 6C.6 48.0 35.7 22.3 11.7 5.8 7.9 1.7 0.6 150 63.0 54.5 42.8 31.5 19.3 5.8 4.7 2.3 1.3 100 57.2 45.3 38.4 27.9 16.9 8.3 3.9 1.8 1.1 80 53.1 45.6 35.4 25.4 15.2 7.3 3.4 1.5 0.9 60 46.3 39.6 30.3 21.4 12.5 5.8 2.6 1.1 0.5 50 42.5 36.2 27.5 19.3 11.1 5.0 2.2 0.5 0.4 40 38.5 33.0 24.9 17.2 9.8 4.3 1.8 0.8 0.3 30 33.5 28.3 21.1 14.3 7.9 3.3 1.4 0.5 20 26.7 22.3 16.4 10.8 5.8 2.2 0.9 10 18.2 15.0 10.6 6.7 3.4 1.2 • NOTE: SOIL LOSS FOP VALUES WHERE 'E' IS LESS THAN 0.1 CR GREATER THAN 440.0 ARE MCI SHOWN: OTHER VALUES NOT SHOWN ARE INVALID Al NDIE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. 501 'V' -78- 1E14 SCIL LOSS FOCI; WINO EROSION IN 1005 PER ACRE PER TEAR JANUART.I9EC BC SURFACE - A . I.C 1 • 220 ILI IVI•• - FLAT SHALL GRAIN RESIOUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 1S0 1000 1250 150C 175C 2000 2250 2500 2750 3000 IN FEEL 10000 176.C 158.8 131.0 113.5 82.7 57.1 36.0 23.4 16.8 0.6 5.0 1.2 0.7 8000 116.0 158.5 135.8 113.5 82.7 51.7 36.0 23.4 16.8 8.6 5.0 1.2 0.1 6000 176.0 158.8 131.0 113.5 82.7 57.1 36.0 21.4 16.8 0.6 5.0 I.2 0.1 4000 176_C 156.8 135.8 113.5 82.7 57.1 36.0 23.4 16.8 2.6 5.0 1.2 0.7 3000 176.0 156.8 135.8 113.5 82.2 51.1 36.0 23.4 16.8 2.6 5.0 1.2 C.7 2000 116.0 158.0 135.8 113.5 82.7 51.7 36.0 23.4 16.8 0.6 5.0 1.2 0.7 1000 116.0 158.8 135.8 113.5 82.7 57.7 36.0 23.4 16.8 0.6 5.0 1.2 0.7 800 176.0 150.8 135.8 113.5 82.7 57.1 36.0 23.4 16.8 0.6 4.0 1.2 0.1 600 171.2 154.3 131.7 109.7 19.5 55.1 34.1 22.0 19.7 8.0 4.6 1.1 0.6 400 167.0 150.4 120.0 106.♦ 16.8 52.0 32.5 70.8 14.8 l.♦ 4.2 1.0 0.6 300 162.2 145.9 121.9 102.6 13.7 50.2 30.7 19.4 13.8 6.8 3.8 0.9 0.5 200 150.0 135.2 114.1 93.6 66.4 44.2 26.5 16.5 11.5 5.5 3.0 0.I 0.4 150 143.2 128.1 107.7 07.7 61.7 40.4 24.0 14.6 10.1 4.7 2.5 0.2 100 135.2 121.0 101.3 81.9 57.1 36.8 21.5 12.9 8.9 4.0 2.1 0.2 80 121.E 113.6 94.6 76.0 52.4 33.1 19.1 11.3 1.6 3.4 I.? 0.2 60 I1S.C 101.9 04.2 66.7 45.2 27.7 15.6 8.9 5.9 2.5 1.2 0.2 SO 108.6 96.0 18.9 62.1 41.7 25.1 13.9 7.8 5.1 2.1 1.0 0.2 40 103.2 91.1 14.5 58.3 30.8 23.0 12.6 7.0 4.5 1.8 0.9 0.1 30 93.3 82.0 66.6 51.4 33.6 19.3 10.3 5.5 1.5 1.4 0.4 1 10 58.4 50.4 39.4 78.6 17.♦ 8.6 0.8 4.1 1.9 1.1 IEI• SOIL LOSS FPCM WIND EROSION IA TONS PEP ACRE PER YEAR JANUACV.1981 10 SURFACE - K • 0.7 1 • 220 ILI IVI•• - FLAT SMALL GRAIN RESIDUE IA POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 150 1000 1250 1500 1150 2000 2250 2500 2750 1000 Ii FEET 10000 123.2 105.5 50.9 72.7 49.9 31.2 11.8 10.4 7.0 3.1 1.5 0.2 8000 123.2 105.5 90.9 72.7 49.9 31.2 17.8 10.4 1.0 3.1 1.5 0.2 6000 123.2 105.5 50.9 72.7 49.9 31.2 17.8 10.4 1.0 3.1 1.5 0.2 4000 123.2 105.5 90.9 12.7 49.9 11.7 11.8 10.4 1.0 3.1 1.5 0.2 3000 123.2 105.5 50.9 72.7 49.9 31.2 11.8 10.4 7.0 3.1 1.5 0.2 2000 123.2 105.5 90.9 12.1 49.9 11.2 17.8 10.4 1.0 3.1 1.5 0.2 1000 119.2 106.1 21.5 .70.0 41.8 29.6 16.8 9.7 6.5 2.8 1.4 0.2 803 117.0 103.7 85.8 68.1 46.3 28.5 16.1 9.3 6.2 2.6 1.3 0.2 600 113.4 100.4 87.8 25.5 44.3 27.0 15.1 8.6 5.7 2.4 1.2 0.2 400 107.5 95.0 18.1 61.3 41.1 24.6 13.6 1.6 5.0 2.1 I.C 0.1 300 103.0 90.9 14.4 58.1 38.7 22.9 12.5 6.9 4.5 1.8 0.5 0.1 200 44.4 82.9 61.4 52.1 34.2 19.1 10.5 5.7 3.6 1.4 0.4 150 26.0 76.0 61.3 46.9 30.3 17.0 8.9 4.7 3.0 1.1 0.3 100 19.4 64.3 55.5 47.0 26.8 14.6 7.5 3.8 2.4 0.8 80 74.3 44.1 51.5 38.6 24.4 13.0 6.6 3.3 2.0 0.1 60 66.1 57.8 45.1 33.8 20.9 10.8 5.3 2.6 1.5 0.5 SO 61.4 53.0 41.6 30.4 18.6 9.4 4.5 2.1 1.3 40 57.0 49.1 38.1 27.8 16.8 8.3 3.9 1.8 1.1 30 50.3 43.1 1...1 23.8 14.1 6.7 3.0 1.4 0.8 20 40.7 14.6 26.2 18.2 10.4 4.6 2.0 0.8 0.4 10 28.7 24.0 17.7 11.8 6.4 2.5 1.0 III* SOIL LCS5 FPCM WIND ER0SICN IN 'CAS PER ACRE PER TEAR JANUARV.1921 C 10 SURFACE - R • 0.! I • 220 ILI IVI•• - FLAT SPALL GRAIN RESIDUE IN PCUNC5 PER ACRE UNSE EL IF RE0 DISTANCE C 230 500 750 1000 1250 1500 1750 7000 2250 2500 2750 3C00 IN EFFI 0.4 10000 8P.C 11.1 22.3 41.1 31.0 11.4 9.2 4.5 3.1 1.1 6000 08.0 17.1 21.1 47.7 31.0 11.4 9.2 4.9 3.1 1.1 0.4 6000 88.C 11.1 22.3 47.7 31.0 11.4 9.2 4.9 3.1 1.1 0.4 4000 08.0 71.1 22.3 47.1 31.0 11.4 9.2 4.5 3.1 1.1 0.4 3000 M.0 11.1 62.3 47.7 31.0 17.4 9.2 4.9 3.1 1.1 0.4 2000 86.3 15.6 61.0 46.6 30.1 16.9 8.8 4.6 2.9 1.1 0.3 1000 19.1 69.6 55.2 ♦2.2 26.9 14.7 7.5 3.9 2.4 0.8 P00 17.1 67.7 54.2 40.9 26.0 14.1 7.2 3.7 2.2 0.6 600 73.4 63.8 50.8 38.0 73.9 12.1 6.4 3.2 2.0 0.6 400 68.2 59.2 46.8 34.7 21.6 11.2 5.5 2.1 1.6 0.5 100 21.2 54.6 43.0 31.6 19.4 9.9 4.8 2.3 1.4 200 55.9 48.1 31_4 21.1 16.3 8.0 3.1 1.1 1.0 ISO 50.6 43.5 33.2 24.0 14.2 6.0 3.1 1.4 0.8 100 45.5 38.4 24.0 21.0 12.2 5.6 2.5 1.1 0.5 PO 41.3 35.1 26.1 18.6 10.6 4.8 2.1 0.5 0.4 60 35.1 30.2 22.1 15.5 8.7 3.7 1.5 C.5 50 32.1 21.5 20.5 13.9 7.1 3.2 1.3 0.4 40 29.2 24.5 18.4 12.3 6.7 2.1 1.1 30 74.5 20.4 14.0 9.7 5.1 1.9 0.7 70 19.4 18.1 11.5 10 12.C 4.8 6.7 4.0 1.9 0.4 • NCIE: SCIL LOSS FOP VALUES WHERE 'E• IS LESS THAN 0.1 CR GREATER THAN 440.0 APE HOT SHOWN; OTHER VALUES NOT SHOWN APE INVALID •• MOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EOUIVALERI. NOT •V• -79- IE1• SOIL LOSS FROM WINO EROSION IN TCNS PER ACRE PER YEAR JANUARY,198C 80 SURFACE - K • 1.0 I • 180 (LI . IV144 - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 SO0 750 1000 1250 1500 1750 2000 2250 2500 2750 3C00 IN FEET 10000 144.0 128.8 108.4 88.3 62.2 40.0 24.2 14.8 10.3 4.8 2.6 0.2 6000 144.0 128.8 1C8.4 88.3 62.2 40.8 24.2 14.8 10.3 4.8 2.6 0.2 4000 144.C 128.8 ICed 88.3 62.2 40.8 24.2 14.8 10.3 4.8 2.6 0.2 3000 144.0 129.8 110.4 88.3 62.2 40.8 24.2 14.8 10.3 4.8 2.6 0.2 2000 144.0 128.6 1C8.4 88.3 62.2 40.8 24.2 14.8 10.3 4.8 2.6 0.2 1000 142.7 127.6 107.2 87.3 61.4 40.2 23.8 14.5 10.0 4.7 2.5 0.2 800 140.7 125.1 105.5 85.8 60.2 39.2 23.1 14.1 9.7 4.5 2.4 0.2 600 137.1 122.4 102.6 83.1 58.0 37.5 22.0 13.3 5.1 4.2 2.2 0.2 400 130.1 116.4 97.2 78.3 54.2 34.5 20.0 11.9 8.1 3.6 1.9 0.2 300 126.3 112.4 53.5 75.0 51.6 32.5 18.7 11.G 7.4 3.3 1.7 0.2 200 116.5 103.2 85.4 67.8 46.0 28.3 15.9 9.2 6.1 2.6 1.3 0.2 150 108.5 95.9 78.8 62.0 41.6 25.0 13.8 7.8 5.1 2.1 I.C 0.2 100 101.8 85.7 73.4 51.3 38.0 22.4 12.2 6.8 4.4 1.7 0.8 0.1 80 56.3 84.7 68.9 53.4 35.2 20.4 10.9 6.0 3.8 1.5 0.7 0.1 60 86.7 75.9 61.3 46.8 30.3 17.0 8.9 4.7 2.5 1.1 0.3 50 80.6 70.3 56.4 42.8 21.3 15.0 7.7 4.0 2.5 1.9 0.3 40 75.5 65.7 52.4 39.4 24.9 13.4 6.8 3.4 2.1 0.1 30 69.5 60.3 47.8 35.6 22.2 11.6 5.8 2.8 1.7 C.5 20 55.8 41.8 31.2 26.9 16.2 7.9 3.7 1.7 1.0 .10 39.7 33.1 25.5 17.7 10.1 4.4 t.9 0.8 0.4 1E14 SOIL LOSS FROM WINO EROSION IN 1CNS PEP ACPE PER YEAR JANUARV.1981 C • 80 SURFACE - K • 0.7 I • 180 (LI (VIS4 - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1750 2000 2250 25C0 2750 3000 IN FEET 10000 100.8 88.8 72.6 56.6 37.5 22.0 12.0 6.6 4.3 1.7 0.8 0.1 8000 100.8 88.8 72.6 56.6 37.5 22.0 12.0 6.6 4.3 1.7 0.8 0.1 6000 100.8 88.8 72.6 56.6 37.5 22.0 12.0 6.6 4.3 1.7 0.8 0.1 4000 100.8 88.8 72.6 56.6 37.5 22.0 12.0 6.6 4.3 1.7 0.8 0.1 3000 100.8 88.8 12.6 56.6 37.5 22.0 12.0 6.6 4.3 1.7 0.8 0.1 2000 100.3 88.4 72.2 56.2 37.2 21.8 11.9 6.5 4.2 1.7 0.8 0.1 1000 95.6 84.1 68.4 53.0 34.8 20.1 10.8 5.9 3.8 1.5 0.7 0.1 800 93.3 82.0 66.6 51.4 33.7 15.3 10.3 5.5 3.5 1.4 0.4 600 88.3 77.♦ 62.6 48.0 31.1 17.5 9.2 4.9 3.1 1.2 0.4 400 82.1 71.8 57.7 43.8 28.1 15.5 8.0 4.2 2.6 0.9 0.3. 300 77.6 67.6 54.1 40.8 25.9 14.0 7.1 3.6 2.2 0.7 200 70.8 61.5 48.9 36.4 22.8 12.0 6.0 3.0 1.8 C.6 I•SO 64.2 55.6 43.8 32.2 19.8 10.1 4.9 2.4 1.4 100 58.2 50.1 39.2 28.5 17.2 8.6 4.0 1.9 1.1 80 54.0 46.4 36.C 26.0 15.5 7.5 3.5 1.6 0.9 60 47.3 40.4 31.0 22.0 12.9 6.0 2.7 1.2 0.5 50 43.4 37.0 28.2 19.8 11.4 5.2 2.3 1.0 0.4 40 39.E 33.7 25.5 17.7 10.0 4.4 1.9 0.8 0.4 30 34.1 28.8 21.5 14.6 8.1 3.4 1.4 0.5 20 27.3 22.9 16.8 11.1 6.0 2.3 0.9 10 18.6 15.3 10.9 6.9 3.5 1.2 (E14 SOIL LOSS FROM WIND EROSION IN TCNS PEP ACPE PER YEAR JANUARY.I981 C • 80 SURFACE - K • 0.5 I • 180 (LI (VI** - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 72.0 62.6 49.7 37.2 23.3 12.3 6.2 3.1 1.9 0.6 8000 72.0 62.6 49.7 37.2 23.3 12.3 6.2 3.1 1.9 0.6 6000 72.0 62.6 49.7 37.2 23.3 12.3 6.2 3.1 1.9 0.6 4000 72.0 62.6 49.7 37.2 23.3 12.3 6.2 3.1 1.9 0.6 3000 72.0 62.6 49.7 37.2 23.3 12.3 6.2 3.1 1.9 0.6 2000 69.7 60.5 48.0 35.7 22.3 11.7 5.8 2.9 1.7 0.6 1000 63.2 54.6 43.0 31.6 19.4 9.9 4.8 2.3 1.4 800 60.9 52.6 41.3 30.2 18.4 5.3 4.4 2.1 1.2 600 56.8 48.9 38.1 27.7 16.7 8.2 3.9 1.8 1.0 400 51.3 44.0 34.0 24.3 14.4 6.9 3.2 1.4 0.6 300 47.1 40.2 30.9 21.9 12.8 5.9 2.1 1.2 0.5 200 40.5 34.4 26.1 18.1 10.4 4.6 2.0 C.8 0.4 150 35.7 30.2 22.7 15.5 8.7 3.7 1.5 0.5 100 31.6 26.6 19.8 13.3 7.3 3.0 1.2 0.4 80 29.0 24.3 17.9 12.0 6.5 2.6 1.0 60 23.5 19.6 14.2 9.2 4.8 1.8 0.7 50 21.1 17.5 12.6 8.1 4.1 1.5 0.5 40 18.7 15.4 11.0 6.9 3.5 1.2 30 14.9 12.2 8.5 5.2 2.5 0.8 20 11.4 5.3 6.3 3.7 1.8 0.3 10 5.2 4.1 2.6 1.4 0.5 • NOTE: SOIL LOSS FOR VALUES WHERE •E• IS LESS THAN 0.1 OP GREATER THAN 440.0 ARE NOT SHOWN: OTHER VALUES NOT SHCNN ARE INVALID 44 NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NCI •Y' _80- If)* SOIL LOSS FRCP WIND EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C • 80 SURFACE - R • 1.C I • 160 ILI (VI•• - FLAT SMALL GRAIN RESIDUE IN POUNOS PER ACRE UNSHELTERED DISTANCE C - 250 50C 150 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FFET 10000 128.0 113.5 54.5 76.3 52.6 33.3 19.2 11.4 7.7 3.4 1.8 0.2 8000 128.0 113.9 54.9 76.3 52.6 33.3 19.2 11.4 7.7 3.4 1.8 0.2 6000 128.C 113.9 54.5 76.3 52.6 33.3 19.2 11.4 7.7 3.4 1.8 0.2 4000 129.0 113.5 54.9 76.3 52.6 33.3 19.2 11.4 7.7 3.4 1.8 0.2 3000 128.0 113.9 94.9 76.3 52.6 33.3 19.2 11.4 7.7 3.4 1.8 0.2 2000 128.0 113.5 54.9 76.3 52.6 33.3 19.2 11.4 7.7 3.4 1.8 0.2 1000 124.3 110.5 51.8 73.5 50.5 31.6 18.1 10.6 7.1 3.1 1.6 0.2 800 121.3 107.8 89.4 71.3 48.8 30.4 17.3 10.1 6.7 2.9 1.5 0.2 600 117.9 104.6 86.6 68.8 46.9 28.9 16.3 9.4 6.3 2.7 1.3 0.2 400 111.5 98.7 81.3 64.2 43.3 26.2 14.6 0.3 5.5 2.3 1.1 0.2 300 107.6 55.1 78.1 61.4 41.1 24.7 13.6 1.7 5.0 2.1 I.C 0.1 200 98.7 86.5 70.9 55.1 36.4 21.3 11.5 6.3 4.1 1.6 0.7 0.1 150 51.3 80.1 65.0 50.0 32.6 18.6 9.9 5.3 3.3 1.3 0.4 100 84.1 73.5 59.2 45.1 29.0 16.1 8.4 4.4 2.7 1.0 0.3 80 78.3 68.3 54.7 41.3 26.3 14.3 7.3 3.7 2.3 0.8 60 71.0 61.7 49.0 36.6 22.9 12.1 6.0 3.0 1.8 0.6 50 65.6 56.9 44.8 33.1 20.5 10.5 5.1 2.5 1.5 0.5 40 60.1 51.9 40.7 29.7 18.1 9.1 4.3 2.1 1.2 30 53.8 46.2 35.9 25.6 15.5 7.5 3.5 1.6 0.9 20 44.3 37.8 28.9 20.3 11.8 5.4 2.4 1.0 0.5 10 31.3 26.3 19.5 13.1 7.2 3.0 1.2 0.4 (E14 SOIL LCSS FROM WINO EROSION IN TENS PER ACRE PEP YEAR JANUARY.I5280 SURFACE - K • 0.7 I • 160 ILI (y)$* - FLAT SMALL GRAIN RESIDUE IA POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 89.6 72.6 23.6 48.8 31.8 18.0 9.5 5.1 3.2 1.2 0.4 8000 89.6 78.6 63.6 ♦8.0 31.8 18.0 9.5 5.1 3.2 1.2 0.4 6000 89.2 78.6 63.6 48.8 31.8 18.0 9.5 5.1 3.2 1.2 0.4 4000 89.6 78.6 23.6 48.8 31.8 18.0 9.5 5.1 3.2 1.2 0.4 3000 89.6 78.6 63.6 48.8 31.8 18.0 9.5 5.1 3.2 1.2 0.4 2000 80.0 77.1 62.3 47.7 31.0 17.4 9.2 4.9 3.1 1.1 0.4 1000 81.7 71.4 57.3 43.5 27.9 15.3 7.9 4.1 2.5 0.9 0.3 800 79.1 69.0 55.3 41.8 26.6 14.5 1.4 3.8 2.4 G.8 600 74.5 65.3 52.C 39.1 24.7 13.2 6.7 3.4 2.1 0.7 400 69.8 60.6 48.1 35.8 22.3 11.7 5.8 2.9 1.7 0.6 300 64.9 56.2 44.3 32.6 20.1 10.3 5.0 2.4 1.4 200 57.4 49.4 38.5 28.0 16.9 8.3 3.9 1.8 1.1 150 52.3 44.8 34.7 24.9 14.8 7.1 3.3 1.5 0.8 100 47.0 40.2 30.9 21.8 12.0 5.9 2.7 1.2 C.5 80 42.9 36.5 27.0 19.5 11.2 5.1 2.2 I.C 0.4 60 37.0 31.3 23.5 16.2 9.1 3.9 1.7 0.6 50 33.8 28.5 21.3 14.5 8.0 3.4 1.4 0.5 40 30.9 25.5 19.2 12.9 7.1 2.9 1.2 0.4 30 25.5 21.3 15.6 10.2 5.4 2.1 0.8 20 20.4 16.5 12.1 7.1 3.9 1.4 0.5 10 12.8 10.4 7.2 4.3 2.1 0.4 (El' SOIL LOSS FROM WINO EROSION IN TENS PER ACRE PER YEAR JANUARY.•1981C 80 SURFACE - K • 0.5 1 • 160 ILI (VI** - FLAT SMALL GRAI6 RESICLE IN PCU605 PER ACRE UNSHELTERED DISTANCE C 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 ?C00 IN fEEI 10000 64.0 55.4 43.6 32.1 19.7 10.1 4.9 2.4 1.4 6000 84.0 55.4 43.6 32.1 19.7 10.1 4.S 2.4 1.4 4000 64.0 55.4 43.6 32.1 19.7 IC.1 4.9 2.4 1.4 3000 63.0 54.5 42.8 31.5 19.9 9.8 4.7 2.3 1.3 2000 60.2 52.0 40.7 29.8 18.1 9.1 4.3 2.1 1.2 1000 55.f 47.0 37.2 26.9 16.2 7.9 3.7 1.7 1.0 800 53.1 46.1 35.0 25.8 15.4 7.5 3.5 1.6 0.5 600 49.6 42.5 32.6 23.4 13.8 6.5 3.0 1.3 0.6 400 44.6 38.0 29.1 20.5 11.9 5.4 2.4 1.0 0.5 300 40.4 34.3 26.0 18.1 10.3 4.6 2.0 C.! 0.4 200 35.3 29.8 22.4 15.3 8.5 3.6 1.5 C.5 150 31.1 26.1 19.4 13.0 7.1 2.9 1.2 0.4 100 26.3 22.0 16.1 10.6 5.6 2.2 0.8 80 23.3 19.4 14.1 9.1 4.8 1.8 0.7 60 19.0 16.4 11.7 7.4 3.8 1.3 50 17.2 14.1 10.0 6.2 3.1 1.1 40 14.7 12.0 8.4 5.1 2.5 0.8 30 12.4 10.1 6.9 4.2 2.0 0.4 20 8.7 7.C 4.7 2.7 1.2 0.2 10 4.C '_.2 2.C 1.0 0.4 • NOTE: SOIL LOSS FCR VALUES WHERE 'E• IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NCT SHOWN: CTHEP VALUES NOT SHCWN ARE INVALID 5• NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EGUIVALENT. NOT 'V' -81- ISIS SOIL 1055 FROM HIND EROSICN IN TCNS PER ACRE PER YEAR JANUARY.I981 C • 80 SURFACE - M • 1.0 1 = 134 ILI (v1•• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 107.2 94.7 77.8 61.1 40.9 24.5 13.5 7.6 570 2.0 l.C 0.1 8000 107.2 94.7 77.8 61.1 40.9 24.5 13.5 7.6 5.0 2.0 1.0 0.1 6000 107.2 94.7 77.8 61.1 40.9 24.5 13.5 7.6 5.0 2.0 1.0 0.1 4000 107.2 94.7 77.8 61.1 40.9 24.5 13.5 7.6 5.0 2.0 I.C 0.1 3000 107.2 94.7 77.8 61.1 40.9 24.5 13.5 7.6 5.0 2.0 1.C 0.1 2000 107.2 94.7 77.8 61.1 40.9 24.5 13.5 7.6 5.0 2.0 1.0 0.1 1000 103.2 91.0 74.5 58.3 38.8 23.0 12.6 7.0 4.5 1.8 0.9 0.1 800 102.1 90.0 73.6 57.5 38.2 22.5 12.3 6.8 4.4 1.8 0.8 0.1 600 97.2 85.6 69.7 54.1 35.6 20.7 11.2 6.1 3.9 1.5 0.7 0.1 400 91.1 80.0 64.8 49.9 32.5 18.5 9.9 5.3 3.3 1.3 0.4 300 86.5 75.8 61.1 46.8 30.2 16.9 8.9 4.7 2.9 1.1 0.3 200 78.3 68.3 54.7 41.3 26.3 14.3 T.3 3.7 2.3 0.8 150 72.2 62.8 49.5 37.3 23.4 12.4 6.2 3.1 1.5 0.6 100 65.8 57.0 *4.9 33.2 20.5 10.6 5.2 2.5 1.5 0.5 80 60.2 51.9 40.7 29.7 18.1 9.1 4.3 2.1 1.2 60 53.8 46.2 35.8 25.8 15.4 7.5 3.5 1.6 0.9 SO 49.8 42.7 32.9 23.5 13.9 6.6 3.0 1.3 0.6 40 45.7 35.1 29.9 21.1 12.3 5.7 2.5 1.1 0.5 30 39.1 33.2 25.1 17.4 9.9 4.3 1.8 0.8 0.3 20 32.0 26.5 20.0 I3.S 7.4 3.1 1.2 0.4 10 21.7 18.0 12.9 8.3 4.3 1.6 0.6 IE10 SOIL LOSS FROM HIND EROSION IN TONS PEP ACRE PEP YEAR JANUARY.1981 SURFACE - K • 0.7 1 • 134 (LI 1V1•• - FLAT SMALL GRAIN RESIDUE IN POUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 75.0 65.3 52.1 39.1 24.7 13.3 6.7 3.4 2.1 0.7 8000 75.0 65.3 52.1 39.1 24.7 13.3 6.7 3.4 2.1 0.7 6000 75.0 65.3 52.1 39.1 24.7 13.3 6.7 3.4 2.1 0.7 4000 75.C 65.3 52.1 39.1 24.7 13.3 6.7 3.4 2.1 0.7 3000 75.0 65.3 52.1 39.1 24.7 13.3 6.7 3.4 2.1 0.7 2000 73.1 63.6 50.6 37.9 23.8 12.7 6.4 3.2 1.9 0.6 1000 67.1 58.2 46.0 34.0 21.1 10.9 5.4 2.6 1.6 0.5 800 64.8 56.1 44.2 32.6 20.1 10.3 5.0 2.4 1.4 600 59.7 51.5 40.3 29.4 17.9 8.9 4.3 2.0 1.2 400 54.5 46.9 36.4 26.3 15.7 7.6 3.6 1.6 0.5 300 50.4 43.2 33.3 23.8 14.1 6.7 3.0 1.4 0.8 200 44.0 37.5 28.6 20.1 11.6 5.3 2.3 1.C 0.4 150 38.6 32.7 24.7 17.0 9.7 4.2 1.8 0.7 0.3 100 34.0 28.7 21.5 14.6 8.1 3.4 1.4 0.5 80 31.5 26.5 19.7 13.2 7.3 3.0 1.2 0.4 60 25.4 21.2 15.5 10.1 5.4 2.1 0.8 50 23.0 19.1 13.8 9.0 4.7 1.7 0.6 40 20.7 17.2 12.3 7.9 4.0 1.5 0.5 30 17.1 14.1 10.G 6.2 3.1 1.1 20 12.8 10.4 7.2 4.3 2.0 0.4 10 6.7 5.4 3.5 1.9 0.8 (214 SOIL LOSS FRCN WIND EROSICN IN TCNS PER ACRE PER YEAR JANUARY.1981 C • 80 SURFACE - K • 0.5 I • 134 (LI IV)*$ - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 53.2 46.0 35.7 25.7 15.4 7.4 3.4 1.6 0.9 8000 53.6 46.0 35.7 25.7 15.4 7.4 3.4 1.6 0.9 6000 53.2 46.0 35.7 25.7 15.4 7.4 3.4 1.2 0.9 4000 52.0 44.6 34.5 24.8 14.7 7.1 3.2 1.5 0.8 3000 50.9 43.6 33.7 24.1 14.3 6.8 3.1 1.4 0.8 2000 49.7 42.5 32.8 23.4 13.8 6.5 3.0 1.3 0.6 1000 43.0 36.6 27.9 19.5 11.3 5.1 2.2 1.0 0.4 800 41.3 35.1 26.7 18.6 10.6 4.8 2.1 0.5 0.4 600 38.3 32.5 24.5 16.9 9.6 4.2 1.8 0.6 400 34.4 29.1 21.7 14.8 8.2 3.5 1.4 0.5 300 31.7 26.7 19.9 13.4 7.3 3.0 1.2 0.4 200 26.4 22.1 16.2 10.6 5.7 2.2 0.8 150 22.9 19.0 13.E 8.9 4.6 1.7 0.6 100 19.9 12.5 11.8 7.5 3.8 1.4 80 17.3 14.2 10.1 6.3 3.1 1.1 60 13.8 11.3 7.8 4.7 2.3 0.7 SO 12.1 9.8 6.8 4.0 1.9 0.4 40 10.4 8.4 5.7 3.3 1.5 0.3 30 7.5 6.0 3.5 2.2 0.9 20 4.4 3.5 2.2 1.2 0.4 10 1.2 1.2 0.6 • NOTE; SOIL 1015 FOR VALUES WHERE 'E' IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NCI SHOWN; OTHER VALUES NOT SHOWN APE INVALID •• NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NCI 'V' -82- 161. SOIL LOSS fPCM WIND EROSICN IN TCMS PER ACRE PER YEAR JANUARY.1981 C • 80 SURFACE - R • 1.0 I • 86 ILI IV H4 - FLAT SMALL GRAIN RESIDUE 18 PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 68.8 59.7 47.3 35.1 21.9 11.4 5.6 2.! 1.7 0.5 8000 68.8 59.7 47.3 35.1 21.9 11.4 5.6 2.8 1.7 C.5 6000 68.0 59.7 47.3 35.1 21.9 11.4 5.6 2.8 1.7 0.5 4000 68.8 59.7 47.3 35.1 21.9 11.4 5.6 2.! 1.7 C.5 3000 68.4 59.3 47.0 34.9 21.7 11.3 5.6 2.7 1.6 0.5 2000 65.! 57.0 45.0 33.2 20.5 IC.6 5.2 2.5 1.5 0.5 1000 59.6 51.4 40.2 29.3 17.8 8.9 4.2 2.0 1.2 800 57.! 49.8 38.9 28.3 17.1 8.5 4.0 1.9 1.1 600 53.9 46.3 35.5 25.9 15.5 7.5 3.5 1.6 0.9 400 48.5 41.5 32.0 22.7 13.4 6.3 2.8 1.3 0.6 300 44.3 37.8 28.9 20.3 11.7 5.4 2.4 I.C 0.5 200 38.3 32.5 24.5 16.9 9.6 4.2 1.8 0.7 0.3 150 33.8 28.5 21.3 14.4 8.0 3.4 1.4 C.5 100 29.6 24.8 18.3 12.3 6.7 2.7 1.1 80 26.3 22.0 16.1 10.6 5.6 2.2 0.8 60 22.0 18.2 13.2 8.5 4.4 1.6 0.6 50 19.5 16.1 11.5 7.3 3.7 1.3 40 17.0 14.0 9.9 6.1 3.1 1.0 30 13.9 11.3 7.9 4.8 2.3 0.7 20 10.3 8.3 5.6 3.3 1.5 0.3 10 4.7 3.7 2.3 1.2 0.5 1610 SOIL LOSS FRCP WIND EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C • 80 SURFACE - K • 0.7 1 • 86 ILI IVI44 - FLAT SMALL GRAIN RESIDUE IR PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 S00 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 48.7 41.2 31.7 22.5 13.2 6.2 2.8 1.2 0.5 8000 48.2 41.2 31.7 22.5 13.2 6.2 2.6 1.2 0.5 6000 48.2 41.2 31.7 22.5 13.2 6.2 2.8 1.2 0.5 4000 47.2 40.3 31.0 21.9 12.8 6.0 2.7 1.2 0.5 3000 45.6 39.1 30.0 21.2 12.3 5.7 2.5 1.1 0.5 2000 43.6 37.1 28.3 19.9 11.5 5.2 2.3 1.C 0.4 1000 37.6 31.8 24.0 16.5 9.3 4.0 1.7 0.6 800 36.3 30.7 23.1 15.8 8.9 3.8 1.6 0.5 600 33.2 28.0 20.9 14.1 7.8 3.3 1.3 0.4 400 29.6 24.9 18.4 12.3 6.7 2.7 1.1 300 26.1 21.8 15.9 10.5 5.6 2.2 0.8 200 22.3 18.5 13.3 8.6 4.5 1.6 0.6 150 19.0 15.7 11.2 7.1 3.6 1.3 100 15.7 12.9 9.0 5.6 2.7 0.5 80 13.7 11.2 7.1 ♦.l 2.3 0.7 60 10.6 8.6 5.8 3.4 1.6 0.3 50 8.5 7.2 4.8 2.8 1.2 0.3 40 7.3 5.8 3.8 2.1 0.8 30 4.7 3.7 2.3 1.2 0.5 20 3.0 2.3 1.4 0.7 10 1.1 0.8 0.4 IEI4 SOIL LOSS FPCM WINO EROSICN 1R TCNS PER ACRE PER YEAR JANUARY.1981 C • 80 SURFACE - R • 0.5 I • 86 ILI (7144 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 34.4 29.0 21.7 14.8 6.2 3.5 1.4 0.5 8000 34.4 29.0 21.7 14.8 8.2 3.5 1.4 0.5 6000 34.4 29.0 21.7 14.8 8.2 3.5 1.4 0.5 4000 32.5 27.7 20.6 14.0 7.7 3.2 1.3 C.4 3000 31.8 26.7 19.9 13.4 7.4 3.0 1.2 0.4 2000 29.5 24.8 18.3 12.2 6.6 2.7 1.1 1000 24.6 20.5 15.0 9.8 5.1 2.0 0.7 800 23.2 19.3 13.5 9.0 4.7 1.8 0.7 600 21.0 17.4 12.5 8.0 4.1 1.5 0.5 400 17.5 14.7 10.4 6.5 3.3 1.1 300 15.5 12.7 8.5 5.5 2.7 C.9 200 12.5 10.1 1.0 4.2 2.0 0.4 ISO 9.9 8.0 5.4 3.1 1.4 0.3 100 7.5 6.0 3.9 2.2 0.9 80 5.5 4.4 2.8 1.5 0.6 60 3.9 3.1 1.5 0.9 50 3.1 2.4 1.5 0.7 40 2.3 1.7 1.0 0.5 30 1.6 1.2 0.6 20 0.8 C.5 10 • NOTE: SOIL LOSS FOR VALUES WHERE 'E' IS LESS THAN 0.1 DR GREATER THAN 440.0 ARE NOT SHOWN: OTHER VALUES NOT SHOWN ARE INVALID •4 NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NOT •V' -83- 1814 SOIL LOSS FROM WINO EROSION IN TONS PEP ACRE PER YEAR JANUA`Y.1981 s 80 SURFACE - K • 1.0 1 • 56 ILI (VI** - FLAT SMALL GRAIN RESIDUE IN PCUNOS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3C00 IN FEET 10000 44.8 38.2 25.2 20.6 11.9 5.5 2.4 1.1 0.5 8000 44.8 38.2 29.2 20.6 11.9 5.5 2.4 1.1 0.5 6000 44.8 38.2 29.2 20.6 11.9 5.5 2.4 1.1 0.5 4000 43.5 37.0 28.2 19.8 11.4 5.2 2.3 1.C 0.4 3000 42.0 35.8 27.2 19.0 10.9 4.9 2.1 0.9 0.4 2000 39.8 33.8 25.6 17.7 10.1 4.5 1.9 0.8 0.4 1000 34.8 29.3 22.0 15.0 8.3 3.5 1.5 0.5 800 33.3 28.1 20.9 14.2 7.9 3.3 1.3 0.5 690 30.4 25.5 18.9 12.7 6.9 2.8 1.1 0.4 400 26.4 22.0 16.1 10.6 5.7 2.2 0.6 100 23.6 15.6 14.2 9.2 4.8 1.8 0.7 200 20.0 16.5 11.8 7.5 3.8 1.4 150 16.5 13.5 9.5 5.9 2.9 1.0 100 13.6 11.1 7.7 4.7 2.2 0.7 BO 11.8 5.6 6.6 3.9 1.8 0.4 60 8.8 7.0 1.7 2.7 1.2 0.2 50 7.1 5.6 3.7 2.1 0.8 49 5.4 4.2 2.7 1.5 0.6 30 3.5 3.0 1.9 0.9 20 2.1 1.6 0.5 0.4 10 0.8 0.5 1E14 SOIL LOSS FRCM WIND EROSION IN IONS PER ACRE PER YEAR JANUARY.1981 SURFACE - K • 0.7 I • 56 ILI IV144 - FLAT SMALL GRAIN RESIDUE Ih POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 I75C 2000 2250 2500 2750 3000 IN FEET 10000 31.4 26.4 19.6 13.2 7.2 3.C 1.2 0.4 8000 31.4 26.4 19.6 13.2 7.2 3.0 1.2 0.4 6000 31.3 26.3 19.5 13.1 7.2 2.9 1.2 0.4 4000 29.6 24.8 18.4 12.3 6.7 2.7 1.1 3000 28.2 23.6 17.4 11.5 6.2 2.5 1.0 2000 25.4 21.2 15.5 10.1 5.4 2.1 0.8 1000 21.8 18.1 13.1 8.4 4.3 1.6 0.6 800 20.4 16.9 12.1 7.7 4.0 1.4 0.5 600 18.2 15.0 10.7 6.7 3.4 1.2 400 14.9 12.2 8.5 5.2 2.5 0.8 300 13.2 10.8 7.4 4.5 2.1 0.4 200 10.3 8.3 5.6 3.3 1.5 0.3 150 7.8 6.2 4.1 2.3 0.9 100 5.3 4.2 2.7 1.5 0.6 80 4.3 3.3 2.1 1.1 0.4 60 3.0 2.3 1.4 0.7 50 2.1 1.6 0.5 0.4 40 I.? 1.3 0.7 30 1.1 C.9 0.5 20 C.6 0.3 10 Ills SOIL LOSS FROM WIND EROSION IN IONS PER ACRE PEP YEAR JANUARY.1981 s 80 SURFACE - K • 0.5 I • 56 ILI IVI44 - FLAT SMALL GRAIN RESIDUE IN POUNCS PER ACRE UNSHELTERED �OOC DISTANCE 0 250 500 750 1000 1250 1500 1756 2000 2250 2500 2750 IN FEET 10000 22.4 18.6 13.4 8.1 4.5 1.7 0.6 8000 22.4 18.6 13.4 8.7 4.5 1.7 0.6 6000 21.8 18.C 13.C 8.4 4.3 1.6 0.6 4000 20.4 16.9 12.1 7.7 4.0 1.4 0.5 3000 19.2 15.9 11.3 7.2 3.6 1.3 2000 17.5 14.4 10.2 6.4 3.2 1.1 1000 13.5 11.3 7.9 4.8 2.3 0.7 800 12.7 10.3 7.1 4.3 2.0 0.4 600 10.7 8.6 5.5 3.4 1.6 0.3 400 P.5 6.8 4.5 2.6 1.1 0.2 300 6.3 5.0 3.2 1.8 0.7 200 4.2 3.3 2.1 1.1 0.4 150 2.5 2.3 1.4 0.6 100 1.8 1.4 0.8 60 1.4 1.1 0.6 60 0.8 C.5 50 0.f C.4 40 30 20 10 • NOTE: SOIL LOSS FOR VALUES WHERE 'E•• IS LESS THAN 0.1 CP GPEAIER THAN 440.0 ARE NOT SHOWN: OTHER VALUES NOT SHOWN ARE INVALID $5 NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. ACT 'V' _84_ IEI• SOIL LOSS FROM MIND EROSICN IN TONS PER ACRE PER YEAR JANUARY.1981 C • 80 SURFACE - R • 1.0 I • 40 ILI IVI * - FLAT SMALL GRAIN RESIDUE IN POUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 I75C 2000 2250 2500 2750 3000 IN FEET 10000 38.4 32.6 24.6 17.0 9.6 4.2 1.8 0.7 0.3 8000 38.4 32.6 24.6 17.0 9.6 4.2 1.8 0.7 0.3 6000 38.4 32.6 24.6 17.0 9.6 4.2 1.8 0.7 0.3 4000 36.8 31.1 23.4 16.1 9.0 3.9 1.6 0.6 3000 35.5 30.0 22.5 15.4 8.6 3.7 1.5 0.5 2000 33.7 28.4 21.2 14.4 8.0 3.3 1.4 0.5 1000 29.5 24.7 18.3 12.2 6.6 2.7 1.0 800 27.1 22.7 16.6 11.0 5.9 2.3 0.9 600 24.2 20.1 14.6 9.5 5.0 1.9 0.7 400 21.5 17.8 12.! 8.2 4.3 1.6 0.6 300 19.2 15.8 11.3 7.1 3.6 1.3 200 15.1 12.3 8.6 5.3 2.6 0.8 150 12.5 10.1 7.0 4.2 2.0 0.4 100 9.9 P.0 5.4 3.1 1.4 0.3 80 8.2 6.5 4.3 2.5 1.0 60 5.2 4.1 2.6 1.4 0.5 50 4.3 3.4 2.1 1.1 0.4 40 3.5 2.7 1.7 0.8 A0 2.2 1.7 1.0 0.5 20 1.2 0.9 0.5 10 (El* SOIL LOSS FROM WINO EROSION IN ICNS PER ACRE PER YEAR JANUARY.1981 C • 80 SURFACE - M • 0.7 - I • 48 ILI IVI•• - FLAT SMALL GRAIN RESIDUE IN PCUNOS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 26.9 22.5 16.5 10.9 5.8 2.3 .0.9 8000 26.9 22.5 16.5 10.9 5.8 2.3 0.9 6000 26.1 21.6 15.5 10.5 5.6 2.2 0.8 4000 24.5 20.4 14.! 9.7 5.1 1.9 0.7 3000 23.4 19.4 14.1 9.1 4.8 1.8 0.7 2000 21.8 10.1 13.0 8.4 4.3 1.6 0.6 1000 17.9 14.7 10.4 6.5 3.3 1.1 800 16.5 13.6 9.6 5.9 2.9 1.0 600 14.3 11.7 8.2 5.0 2.4 0.8 400 12.2 9.9 6.8 4.1 1.9 0.4 300 10.4 8.4 5.7 3.3 1.5 0.3 200 7.4 5.9 3.5 2.2 0.9 150 4.8 3.8 2.4 1.3 0.5 100 3.6 2.8 1.1 0.8 80 2.7 2.1 1.3 0.6 60 1.7 1.3 0.7 50 1.3 C.9 0.5 40 0.9 C.5 30 0.6 0.4 20 10 CEP: SOIL LOSS FROM WINO EROSION IN TCNS PER ACRE PER YEAR JANUARY.1981 C • 80 SURFACE - K • 0.5 I • 48 ILI IV)** - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 19.2 15.9 II.? 7.2 3.6 1.3 8000 19.2 15.9 11.3 7.2 3.6 1.3 6000 18.3 15.1 10.7 6.7 3.4 1.2 4000 17.0 14.0 5.9 6.2 3.1 1.0 3000 15.3 12.5 8.8 5.4 2.6 0.9 2000 14.1 11.5 8.0 4.9 2.4 0.8 1000 11.0 8.9 6.0 3.6 1.7 0.3 800 9.2 7.9 5.3 3.1 1.4 0.3 600 7.7 6.1 4.0 2.3 0.9 400 5.3 4.2 2.7 1.4 0.6 300 4.1 3.2 2.C 1.0 0.4 200 2.6 2.C 1.2 0.6 150 1.7 1.3 0.7 100 1.1 0.9 0.5 80 0.! 0.5 60 50 40 30 20 10 • NOTE: SOIL LOSS FOR VALUES WHERE •E` IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE ACT SHOWN: OTHER VALUES NOT SHOWN ARE INVALID •• NOTE: VALUES SHOWN APE FLAT SMALL GRAIN EQUIVALENT. NCT tV• -85- IEN SOIL LOSS FROM WINDEROSICN IN.TCNS PER ACRE PER YEAR JANUARY.1581 C • 80 SURFACE - K • 1.0 I = 38 ILI IV144- FLAT SMALL GRATA RESIDUE IN PCUMOS PER. ACRE UNSHELTERED DISTANCE 0 250 500 750 1000- 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 30.4 25.5 18.9 12.7 6.9 2.8-- 1.1 0.4 8000 30.4 25.5 18.9 12.7 6.9 2.8 1.1 0.4 6000 30.1 25.3 18.7. 12.5 6.8 2.8 1.1 0.4. 4000- 28.3 23.7 17.4 11.6 6.2 2.5 1.0 3000 26.7 22.4 16.4 10.8 5.8 2.3 0.9 2000 24.4 20.3 14.8 9.6 5.1 1.5. 0.7 1000 20.9 17.3 12.4 7.9 4.1 1.5 0.5. 800 19.5 16.1 11.5 7.3 3.7 1.3 600 17.3 14.2 1C.0 6.3 3.1 1.1 400 14.3 11.7 8.1 4.9 2.4 0.8 300 12.6 I0.2 7.1 4.2 2.0 0.4 200 9.7 7.8 5.3 3.0 1.4 0.3 150 7.1 5.7 3.7 2.1 0.8 100 4.8 3.8 2.4 1.3 0.5 80 3.9 3.1 1.5 0.9 60 2.6 2.0 1.2 0.6 50 1.9 1.4 0.8 40 1.5 1.1 0.6 30 1.0 0.6 20 10 IE14 SOIL LOSS FROM WINO EROSION IN IONS PER ACRE PER TEAR JANUAC •Y.l98e0 SURFACE - K • 0.7 I • 38 ILI IV-144 - FLAT SMALL GRAIN RESIOUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 21.3 17.6 12.7 8.! 4.2 1.5 0.6 8000 21.3 17.6 12.7 8.1 4.2 1.5 0.6 6000 20.5 17.0 12.2 7.8 4.0 1.4 0.5 4000 19.2 15.9 11.3 7.2 3.6 1.3 3000 17.8 14.6 10.4 6.5 3.3 1.1 2000 16.1 13.2 9.3 5.7 2.8 0.5 1000 12.8 10.4 7.2 4.3 2.1 0.4 800 11.6 9.4 6.5 3.8 1.8 0.3 600 9.2 7.7 5.2 3.0 1.4 0.3 400 7.4 5.9 3.9 2.2 0.9 300 5.1 4.0 2.5 1.4 0.5 200 3.7 2.9 1.8 0.9 150 2.4 tee 1.1 0.5 100 1.6 1.2 C.1 60 1.1 0.8 0.4 60 0.7 C.4 50 40 30 20 10 IE14 SOIL LOSS FROM WINO EROSION 114 TCNS PER ACRE PEP YEAR JANUARY:1981 C C . 80 SURFACE - N • 0.5 I = 38 ILI (V144 - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1230 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 15.2 12.4 8.7 5.3 2.6 0.9 8000 15.1 12.4 8.6 5.3 2.6 0.8 6000 14.3 11.7 8.1 5.0 2.4 0.8 4000 13.6 11.1 7.7 4.6 2.2 C.7 3000 12.4 10.0 6.9 4.1 2.0 0.4 2000 11.1 9.0 6.1 3.6 1.7 0.3 1000 7.5 6.0 3.9 2.2 0.9 800 6.3 5.0 3.2 1.8 0.7 600 4.7 3.7 2.3 1.2 0.5 400 3.4 2.6 1.6 0.8 300 2.3 1.8 1.1 0.5 200 1.3 1.0 0.5 150 0.9 0.5 100 0.5 0.3 eo 60 50 40 30 20 10 • NOTE: SOIL LOSS FOR VALUES WHERE sEs IS LESS THAN 0.1 OR GREATER THAN 440.0 ARE NOT SHOWN: OTHER.VALUES NOT SHOWN APE INVALID 44 NOTE: VALUES SHOWN ARE FLAT COAL: GRAIN EQUIVALENT. MOT •Ve -86- IE1• SOIL LOSS FROM WINO EROSICN IN TENS PER ACRE PER YEAR JANUART.1981 C • B0 SURFACE - K • 1.0 I • 21 111 - FLAT SMALL GRAIN RESIOUE IN PCL'NOS PEP ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 16.8 13.8 5.7 6.1 3.0 1.0 8000 16.8 13.8 9.7 6.1 3.0 1.0 6000 15.8 12.9 9.1 5.6 2.7 0.9 4000 14.7 12.1 8.4 5.1 2.5 0.8 1000 13.5 11.0 7.6 4.6 2.2 0.7. 2000 12.5 10.1 1.C 4.2 2.0 0.4 1000 8.9 7.1 4.0 2.7 1.2 C.2 800 7.7 6.1 4.1 2.3 0.9 600 5.7 4.5 2.9 1.6 0.6 400 4.1 3.2 2.C 1.0 0.4 300 3.C 2.3 1.4 0.7 200 1.1 1.3 C.7 150 1.1 C.8 C.4 100 0.7 0.4 80 60 50 40 30 20 10 IEI• SOIL LOSS FROM WINO EROSION lit TCNS PEP ACRE PER YEAR JANUARY.1581 C • BO SURFACE - K • 0.7 I • 21 ILI IV/4• - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 750 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 11.8 5.5 6.5 3.9 1.8 0.4 8000 11.4 5.2 6.3 3.7 1.7 0.3 6000 10.6 8.6 5.8 3.4 1.6 0.3 4000 9.9 8.0 5.4 3.1 1.4 0.3 3000 0.8 7.0 4.7 2.7 1.2 0.2 2000 6.9 5.5 3.6 2.0 0.8 1000 4.4 3.4 2.2 1.1 0.4 800 3.8 2.9 1.! 0.9 600 2.8 2.1 1.3 0.6 400 1.8 1.3 0.7 300 1.2 0.9 0.5 200 0.8 0.4 150 100 80 60 50 40 30 20 10 AEI• SOIL LCSS FROM WINO EROSIEN IN TINS PER ACRE PER YEAR JANUARY.19P1 C - 80 SURFACE - K • 0.5 I • 21 ILI (VI•• - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 SOC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FFFT 10000 8.4 6.7 4.5 2.6 1.1 0.2 8000 8.0 6.4 4.3 2.4 1.0 6000 7.6 6.1 4.C 2.3 0.9 4000 6.2 4.9 3.2 1.8 0.7 3000 5.5 4.3 2.8 1.5 0.6 2000 4.5 3.5 2.2 1.2 0.5 1000 2.8 7.2 1.3 0.6 800 2.2 1.6 1.C 0.4 601 1.6 1.2 0.6 400 1.0 C.6 300 0.E 0.5 200 150 100 BO 60 50 40 30 20 10 • NOTE: SOIL LOSS FOR VALUES WHERE 'E' IS LESS THAN C.I CR GREATER THAN 440.0 ARE NCI SHOWN: OTHER VALUES NOT SHOWN PPE INVALID 4• METE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NCI 'V' -87- • IE1• SOIL LOSS FROM WEND EROSION IN TENS PER ACRE PER YEAR JANUARY.19880 SURFACE - K • I.C I .- 12 ILI IV'PR - FLAT SMALL GRAIN RESIDUE IN PCUNOS PER ACRE UNSHELTERED DISTANCE 0 250 500 150 1000 1250 1500 1150 20CC 2250 2500 2750 3900 IN FEET 10000 9.6 7.7 5.2 3.0 1.4 0.3 8000 9.2 7.4 5.0 2.9 1.3 0.3 6000 8.1 7.0 4.7 2.7 1.2 0.2 4000 7.6 6.0 4.C 2.2 0.9 3000 6.7 5.3 3.5 1.9 0.8 2000 5.0 3.9 2.5 1.3 0.5 1000 3.4 2.6 1.6 0.8 800 2.1 2.1 1.3 0.6 600 1.9 1.4 0.8 400 1.3 1.0 0.5 300 0.9 0.5 200 0.5 0.3 I50 100 80 60 50 40 30 20 10 (El* SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PER YEAR JANUARY.1981 C - 80 SURFACE - K • C.7 I • 12 ILI IV N• - FLAT SMALL GRAIN RESIDUE IN PCUNPS PEP ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 6.7 3.5 1.9 0.8 8000 6.2 4.9 3.2 1.7 0.7 6000 5.1 4.5 2.9 1.6 0.6 4000 4.7 3.7 2.3 1.2 0.5 3000 4.3 3.4 2.1 1.1 0.4 2000 3.6 2.8 I.E 0.8 1000 2.C 1.5 0.8 800 1.7 1.3 C.7 600 1.2 0.9 C.5 400 0.8 0.5 300 0.f 0.4 200 ISO 100 80 60 50 40 30 20 10 (El* SOIL LOSS FRCP WINO EROSION IN TENS PER ACRE PER YEAR JANUARY.19880 SURFACE - K • C.5 I • 12 ILI LV14t - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 4.8 3.8 2.4 1.3 0.5 8000 4.5 3.5 2.2 1.2 0.4 6000 4.2 3.3 2.1 1.1 0.4 4000 3.6 2.8 1.7 0.8 3000 3.1 2.4 1.5 0.7 2000 2.5 1.9 1.2 0.5 1000 1.6 1.2 0.6 800 1.3 1.0 0.5 600 0.9 C.5 400 0.t 0.4 300 200 150 100 80 60 50 40 30 20 10 • NCIE: SOI LOSS FOR VALUE WHERE 'E' IS ARE NCI SHOWN: OTHER VALUES NOT SHOWN THAN 0.1 OR GREATER THAN SHOWN ARE INVALID S. NOTE: VALUES SHOWN APE FLAT SMALL GRAIN EQUIVALENT. NCI 'V' -88- 1E14 SOIL LOSS FPCM WINO EROSICN IN TCNS PER ACRE PER TEAR JANUARY.I98l C - 100 SURFACE - K • 1.0 I • 310 ILI IVI• - FLAT SMALL GRAIN RESIDUE 16 PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 210.0 286.6 256.1 230.5 125.1 154.1 110.1 84.6 68.1 45.3 32.3 10.4 1.3 8000 .10.C 286.6 256.7 230.5 185.1 154.1 110.1 84.6 68.1 45.3 32.3 10.4 7.3 6000 2.10.0 286.6 256.7 230.5 185.1 154.1 110.1 84.6 68.1 45.3 32.3 L0.♦ 7.3 4000 310.0 286.6 256.7 230.5 185.1 154.1 110.1 84.6 68.1 45.3 32.3 10.4 7.3 1000 310.0 286.6 256.7 230.5 185.1 154.1 110.1 84.6 68.1 45.3 32.3 10.4 7.3 2000 2.10.0 286.6 256.7 230.5 185.1 154.1 110.1 04.6 68.1 45.3 32.3 10.4 7.3 1000 310.0 286.6 256.7 230.5 185.1 154.1 110.1 84.6 68.1 45.3 32.3 10.4 7.3 800 310.0 286.6 256.7 230.5 185.1 154.1 110.1 94.6 68.1 45.3 32.3 10.4 7.3 609 210.0 286.6 256.7 230.5 185.1 154.1 110.1 84.6 68.1 45.3 32.3 10.4 7.3 400 210.0 286.6 256.1 230.5-185.1 154.1 110.1 84.6 68.1 45.3 32.3 10.4 7.3 300 106.7 283.4 2553.6 227.4 182.3 151.2 107.0 82.6 66.3 43.8 31.2 10.0 7.0 200 296.5 273.9 244.5 218.4 174.0 142.9 101.1 76.7 61.2 39.0 28.0 8.8 6.1 150 287.5 264.9 235.9 209.8 166.3 135.2 94.9 71.3 56.5 36.3 25.2 7.8 5.4 100 278.3 256.1 227.4 201.5 158.8 121.8 89.0 66.2 52.2 33.0 22.7 6.9 4.7 PO 270.0 248.1 219.0 193.9 152.0 121.2 83.0 61.8 48.4 30.2 20.5 6.2 4.2 60 257.! 236.1 2[8.3 182.8 142.1 111.7 76.3 55.5 43.0 26.3 17.5 5.2 3.5 5n 248.1 227.8 200.4 175.0 135.3 105.2 71.3 51.3 39.5 23.8 15.6 4.5 3.C 40 240.0 219.4 192.5 161.4 128.5 98.8 66.4 47.3 36.2 21.4 13.9 4.0 2.6 30 222.5 202.8 176.8 157.2 115.4 86.7 57.2 39.8 30.0 17.2 10.8 3.0 1.9 20 197.2 178.8 154.? 130.9 97.2 10.3 45.1 30.3 22.3 12.1 7.3 1.9 1.2 10 157.5 141.4 119.8 98.8 70.6 41.6 28.9 16.2 12.8 6.3 3.5 0.8 A . IEI• SOIL LOSS FROM WINO ERCSICN IN TONS PEP ACRE PEP TEAR JANUART.198a0 SURFACE - K • 0.7 1 • 310 ILI 19144 - FLAT SMALL GRAIN RESIDUE IA PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 200C 2250 2500 2750 3000 14 FEET 10000 217.0 197.5 171.8 147.5 111.4 83.0 54.5 37.6 28.2 15.9 10.0 2.7 1.8 8000 217.0 197.5 171.8 147.5 111.4 83.0 54.5 37.6 28.2 15.9 10.0 2.7 1.8 6000 217.0 151.5 171.8 147.5 111.4 83.0 54.5 37.6 28.2 15.9 10.0 2.7 1.8 4000 217.0 197.5 111.8 147.5 111.4 83.0 54.5 37.6 28.2 15.9 10.0 2.7 1.8 3000 217.0 197.5 171.8 147.5 111.4 83.0 54.5 31.6 28.2 15.9 10.0 2.7 1.8 2000 717.0 197.5 171.! 147.5 111.4 83.0 54.5 37.6 28.2 15.9 10.0 2.7 1.8 1000 217.0 197.5 171.8 147.5 111.4 83.C 54.5 37.6 28.2 15.9 10.0 2.7 1.8 800 216.4 197.0 171.3 147.0 110.9 82.6 54.2 37.4 28.0 15.8 9.9 2.7 1.7 600 211.2 192.1 166.7 142.7 107.2 75.2 51.6 35.4 26.4 14.7 9.1 2.5 1.6 400 205.5 186.6 161.6 137.8 103.1 75.5 48.9 33.2 24.7 13.6 8.3 2.2 1.4 300 199.8 181.2 156.6 133.0 99.0 11.9 46.2 31.2 23.0 12.5 7.6 2.0 1.3 200 187.3 169.4 145.6 122.7 90.4 64.3 40.7 26.9 19.6 10.4 6.1 1.6 1.0 150 178.0 160.1 137.5 115.2 84.0 58.5 26.0 74.C 17.3 8.9 5.7 1.3 0.7 100 167.4 150.7 128.4 106.7 77.0 53.0 32.6 20.5 14.5 7.5 4.2 1.0 C.6 80 158.6 142.4 120.8 99.7 71.3 48.2 29.3 18.5 13.0 6.4 3.5 0.8 C.5 60 144.7 125.5 109.0 88.9 62.6 41.2 24.5 15.0 10.4 4.9 2.6 0.3 50 137.5 122.7 102.0 83.4 58.2 37.7 22.1 13.3 5.2 4.2 2.2 0.2 40 129.9 115.6 56.5 77.6 53.7 34.1 19.8 11.7 8.0 3.6 1.8 0.2 30 117.0 103.7 85.0 68.1 46.3 20.5 16.1 9.3 6.2 2.6 1.3 0.2 20 178.5 12.5 0.9 0.1 68.5 54.8 41.4 26.3 14.3 7.3 3.7 2.3 0.8 10 (EIS SOIL LOSS FPCM WINO EROSION IG TOWS PEA d£AE PEA JELR j:n9tR:.l,e - C • ICO SURFACE - K • 0.5 I • 310 IL1 1V1.. - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 50C 750 ICCC 125C 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 155.0 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 2.0 3.3 0.8 0.4 8000 155.0 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 0.4 6000 155.0 135.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 0.4 4000 155.C 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 0.4 3000 155.0 139.1 117.7 96.9 69.0 46.3 28.C 47.5 12.3 6.0 3.3 0.8 0.4 2000 155.[ 139.1 117.7 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 C.4 1000 150.0 134.4 113.4 93.0 65.9 43.8 26.3 16.3 11.4 5.4 3.0 0.7 800 147.3 131.9 111.2 90.9 64.2 42.5 25.4 15.6 10.9 5.1 2.8 0.6 601 143.7 128.5 1C!.1 88.1 62.0 40.6 24.1 14.8 10.2 4.8 2.6 0.2 400 136.8 122.1 102.3 82.9 57.8 37.3 21.9 13.2 9.0 4.1 2.2 0.2 300 130.7 116.4 91.2 18.3 54.2 34.5 20.0 11.9 8.1 3.6 1.9 0.2 200 119.0 105.6 81.5 69.6 47.5 29.4 16.6 9.6 6.4 2.8 1.4 0.2 150 110.4 57.7 80.4 63.4 42.7 25.8 14.3 8.1 5.3 2.2 1.1 0.2 100 103.5 91.3 74.1 58.4 38.9 23.1 12.6 7.0 4.6 1.8 0.9 0.1 80 97.4 05.7 69.9 54.2 35.8 20.8 11.2 6.1 3.5 1.5 C.7 0.1 63 88.3 71.4 62.6 48.0 31.1 17.6 9.2 4.9 3.1 1.2 0.4 50 62.4 72.0 57.8 44.0 28.2 15.6 8.0 4.2 2.2 0.5 0.3 40 77.0 67.2 53.7 40.4 25.7 13.9 7.1 3.6 2.2 0.7 30 68.7 59.6 47.2 35.1 21.8 11.4 5.6 2.8 1.1 0.5 20 57.2 45.? 38.4 27.9 16.9 8.3 3.9 1.P 1.1 I0 41.9 35.7 77.1 18.9 10.9 4.9 2.1 0.5 0.4 • NOTE: SOIL LOSS FOP VALUES WHERE 'E' IS LESS THAN 0.1 CP GREATER THAN 440.0 ARE NCI SHOWN; OTHER VALUES NOT SHCNN ARE INVALID •• NCTE: VALUES SFCWN ARE FLAT SNAIL GRAIN EQUIVALENT. NCI 'V' -89- 1E1• SOIL LOSS FROM MIND EROSION IN 1CNS PER.ACRE PER YEAR JANUARY.1981 C • 100 SURFACE - N • I.C I . 250 ILI (VI•• - FLAT SMALL GRAIN RESIDUE IA PCUNCS PEP ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 1A FEET 10000 250.8 229.0 201.! 176.1 136.2 106.1 12.0 51.9 40.0 24.1 15.9 4.6 3.1 8000 250.0 229.0 201.5 176.1 136.2 106.1 72.0 51.9 40.0 24.1 15.9 4.6 3.1 ' 6000 250.0 225.0 201.5 176.1 136.2 106.1 72.0 51.5 40.0 24.1 15.9 4.6 3.1 4000 250.C 229.0 201.! 116.1 136.2 106.1 72.0 51.5 40.0 24.1 15.9 4.6 3.1 3000 250.0 229.0 201.5 176.1 136.2 106.1 72.0 51.9 40.0 24.1 15.9 4.6 3.1 2000 250.0 229.0 201.5 176.1 136.2 106.1 72.0 51.5 40.0 24.1 15.9 4.6 3.1 1000 250.0 229.0 201.5 176.1 136.2 106.1 72.0 51.9 40.0 24.1 15.9 4.6 3.1 800 250.C 229.0 201.5 176.1 136.2 106.1 72.0 51.9 40.0 24.1 15.9 4.6 3.1 600 250.0 229.0 201.5 176.1 136.2 106.1 72.0 51.9 40.0 24.1 15.9 4.6 3.1 400 245.0 224.2 157.0 171.7 132.4 102.4 69.2 49.6 38.1 22.7 14.9 4.3 2.9 300 240.0 215.4 152.5 161.4 128.5 98.0 66.4 47.3 36.2 21.4 13.9 4.0 2.6 200 230.C 209.9 183.5 158.7121.0 91.8 21.1 42.9 32.6 18.9 12.1 3.4 2.2 150 220.C 200.4 174.5 150.1 113.6 85.0 55.9 38.8 29.2 16.6 10.4 2.9 1.9 100 210.C 190.9 165.6 141.6 106.3 78.4 51.0 34.9 26.0 14.5 8.9 2.4 1.5 80 200.0 181.4 156.8 133.2 99.2 12.1 46.3 31.3 23.1 12.6 7.6 2.0 1.3 60 185.4 167.6 144.0 121.2 89.0 63.2 39.9 26.3 19.1 10.1 5.9 1.5 0.8 50 176.0 158.7 13!.1 113.5 82.7 57.7 36.0 23.4 16.8 8.6 5.0 1.2 0.7 40 166.0 149.4 127.1 105.5 76.1 52.2 32.1 20.5 14.6 7.3 4.1 1.0 0.5 30 149.3 133.8 112.5 92.5 65.5 43.5 26.0 16.1 11.2 5.3 2.9 0.1 20 132.9 118.4 99.0 79.9 55.5 35.5 20.1 12.4 8.4 3.8 2.0 0.2 JO 103.3 91.2 74.6 58.4 38.9 23.0 12.6 7.0 4.5 1.8 C.9 0.1 (E14 36ii l6₹5 MN WINO CN03ICR IA 1CN$ PFP ICP€ P€P 7€AR JANUART.1981 C • 100 SURFACE - R • 0.1 I • 250 ILI IV1•• - FLAT SMALL GRAIN RESIDUE IA PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1150 2000 2250 2500 2750 3000 IN FEET 10000 175.0 157.8 134.9 112.1 82.0 57.2 35.6 23.1 16.6 8.5 4.9 1.2 0.7 8000 175.0 157.8 134.9 112.1 82.0 57.2 35.6 23.1 16.6 8.5 4.9 1.2 -0.7 6000. 175.0 157.8 134.9 112.7 82.0 57.2 35.6 23.1 16.6 8.5 4.9 1.2 0.7 4000 175.0 157.8 134.5 112.7 82.0 57.2 35.6 23.1 16.6 8.5 4.9 1.2 C.1 3000 175.0 157.8 134.9 112.7 82.0 57.2 35.6 23.1 16.6 8.5 4.9 1.2 0.7 2000 175.0 157.8 134.9 112.7 82.0 57.2 35.6 23.1 16.6 8.5 4.9 1.2 0.1 1000 172.9 155.6 133.1 111.0 80.6 56.0 34.8 22.4 16.1 8.2 4.1 1.2 0.6 800 169.2 152.4 129.9 106.1 78.2 53.9 33.3 21.4 15.3 7.7 4.4 1.1 C.6 600 165.8 149.2 127.0 105.4 76.0 52.1 32.C 20.4 14.5 7.3 4.1 1.0 0.5 400 158.2 142.1 120.5 99.4 71.1 48.0 29.2 15.4 13.0 6.3 3.5 0.8 0.5 300 150.2 134.6 113.7 93.2 66.1 43.9 26.4 16.3 11.4 5.4 3.0 0.7 0.4 200 141.! 126.3 106.1 86.3 60.6 39.5 23.4 14.2 9.8 4.6 2.4 0.2 ISO 131.9 117.5 58.2 79.1 54.9 35.1 20.4 12.1 0.3 3.7 1.9 0.2 100 122.C 108.4 50.0 71.8 49.2 30.7 17.5 10.2 6.8 3.0 1.5 0.2 80 115.3 102.2 84.4 66.9 45.4 21.8 15.6 9.0 5.9 2.5 1.2 0.2 60 105.! 52.9 76.2 59.1 39.9 23.1 13.1 7.3 4.7 1.9 0.9 0.1 50 99.9 88.0 71.8 55.9 37.0 21.7 11.8 6.5 4.2 1.7 0.8 0.1 40 53.9 82.5 61.0 51.8 33.9 19.5 10.4 5.6 3.6 1.4 0.4 30 86.E 76.0 61.4 46.9 30.4 11.0 8.9 4.1 3.0 1.1 0.3 20 11.1 62.3 49.5 37.0 23.2 12.3 6.1 3.1 1.8 0.6 10 53.2 46.1 35.7 25.7 15.4 1.4 3.4 1.6 0.9 1E1• SOIL LOSS FRCP WINO ERCSICN IN TENS PER ACRE PFR TEAR JANUARV.I48100 SURFACE - K • 0.•. I • 250 ILI (VI•. - FLAT SMALL GRAIN RESIDUE IN PCUNCS PEP ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2510 2750 3CC0 IN FEET 10000 125.0 111.1 52.4 74.0 50.9 32.0 18.3 10.8 7.2 3.2 1.6 0.2 8000 125.0 111.1 52.4 74.0 50.9 32.0 18.3 10.8 7.2 3.2 1.6 0.2 6000 125.0 111.1 52.4 14.0 50.9 12.0 10.3 10.8 7.2 3.2 1.6 0.2 4000 125.C 111.1 52.4 74.0 50.9 32.0 18.3 10.8 1.2 3.2 1.6 0.2 2000 124.1 110.3 51.7 73.3 50.4 31.•. 18.1 10.6 7.1 3.1 1.6 0.2 1000 118.2 104.9 86.8 69.0 47.0 29.0 16.4 5.5 6.3 2.7 1.4 0.2 800 115.3 102.2 84.4 66.9 45.4 27.8 15.6 5.0 5.9 2.5 1.2 0.2 600 109.7 91.1 79.9 62.9 42.3 25.5 14.2 8.0 5.3 2.2 1.1 0.2 400 104.0 91.7 75.2 58.8 39.2 23.3 12.7 7.1 4.6 1.9 0.9 0.1 300 99.1 87.3 71.2 55.4 36.6 21.4 11.6 6.4 4.1 1.6 0.8 0.1 200 90.1 75.6 64.5 49.6 32.3 18.4 9.7 5.2 1.3 1.2 0.4 ISO 83.2 72.7 58.5 44.5 28.6 15.8 8.2 4.3 2.7 I.C 0.3 100 16.5 66.6 53.2 40.1 25.4 13.7 6.9 3.5 2.2 0.7 AO 71.5 62.1 49.3 36.8 23.1 12.2 6.1 3.0 1.8 C.6 60 62.2 54.1 42.5 31.2 15.1 5.1 4.1 2.2 1.3 50 58.2 50.2 39.2 28.5 17.3 8.6 4.1 1.5 1.1 40 54.5 ♦6.5 36.4 26.3 15.7 1.7 3.6 1.6 0.5 30 47.8 40.9 31.4 22.3 13.1 t.1 2.7 1.2 0.5 0.8 0.3 10 28.C 23.4 11.2 11.4 6.2 2.4 0.9 • NOTE'. 440. LCSS FOR VALUES MIER( .E. IS 0 ARE NCI SHOWN; LESS GREATER THAN OTHER VALUES NOT SHOWN IRE INVALID AS NOTE: VALUES SHOWN APE FLAT SMALL GRAIN EOUIVALFAI. NOT 'V. -90- 111• SOIL LOSS FRON WINO EROSICN IN lCNS PER ACRE PER YEAR JANUARY.1581 C • 100 SURFACE - A • 1.0 I - 220 ILI 1V1.4 - FLAT SMALL GRAIN RESIDUE IN PCUNOS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 220.0 200.4 174.5 150.1 113.6 85.0 55.9 38.8 29.2 16.6 10.4 2.9 1.5 8000 220.0 200.4 174.5 150.1 113.6 85.0 55.9 38.2 29.2 16.6 10.4 2.9 1.9 6000 220.0 200.4 174.5 150.1 113.6 85.0 55.9 38.8 29.2 16.6 10.4 2.9 1.5 4000 220.0 20C.4 174.5 150.1 113.6 85.0 55.5 38.8 29.2 16.6 10.4 2.9 1.9 3000 220.0 200.4 174.5 150.1 113.6 85.0 55.9 38.8 29.2 16.6 10.4 2.9 1.9 2000 220.0 200.4 174.5 150.1 113.6 85.0 55.9 38.8 29.2 16.6 10.4 2.9 1.9 1000 220.0 200.4 174.5 150.1 113.6 85.0 55.9 38.8 29.2 16.6 10.4 2.9 1.5 600 220.0 200.4 174.5 150.1 113.6 85.0 55.9 38.8 29.2 16.6 10.4 2.9 1.9 600 215.0 195.6 170.1 145.8 109.9 81.7 53.5 36.8 27.6 15.5 9.7 2.6 1.7 400 210.C 190.9 165.6 141.6 106.3 78.4 51.0 34.5 26.0 14.5 8.9 2.5 1.5 300 204.0 185.2 160.3 136.6 102.0 74.6 48.2 32.7 24.2 13.3 8.1 2.2 1.4 200 191.1 173.0 149.0 125.9 93.0 66.6 42.4 28.2 20.6 11.0 6.6 1.1 1.1 ISO 182.3 164.7 141.3 118.7 86.9 61.4 38.6 25.3 18.4 9.6 5.6 1.4 0.8 100 172.4 155.4 132.E 110.6 80.3 55.7 34.6 22.3 16.0 8.1 4.7 1.1 0.6 80 163.2 146.8 124.7 103.3 74.3 50.7 31.0 19.7 14.0 2.5 3.9 0.9 0.5 60 147.3 131.9 111.2 90.9 64.2 42.5 25.4 15.6 10.9 5.1 2.8 0.6 SO 140.3 125.4 105.3 85.5 60.0 39.0 23.0 14.0 9.6 4.5 2.4 0.2 40 132.5 116.4 99.0 79.9 55.5 35.5 20.7 12.4 4.4 3.8 2.0 0.2 30 119.7 106.2 88.0 70.1 47.8 29.6 16.8 9.7 6.5 2.8 1.4 0.2 20 104.9 92.6 75.9 59.4 39.7 23.6 13.0 7.2 4.7 1.9 0.9 0.1 10 80.0 69.8 56.0 42.4 27.1 14.8 7.6 3.9 2.4 0.8 • 1118 SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PEP YEAR JANUARY.l98l C . 100 SURFACE - R . 0.7 I - 220 ILI - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 154.0 138.1 116.5 56.1 68.4 45.6 27.7 17.3 12.1 5.9 3.2 0.8 0.4 8000 144.0 138.1 116.9 96.1 68.4 45.8 27.7 17.3 12.1 5.9 3.2 0.8 0.4 6000 154.0 138.1 116.5 96.1 68.4 45.8 27.7 17.3 12.1 5.9 3.2 0.8 0.4 4000 154.0 138.1 116.9 96.1 68.4 45.8 27.7 17.3 12.1 5.9 3.2 0.8 C.4 3000 154.0 138.1 116.9 96.1 68.4 ♦5.8 27.7 17.3 12.1 5.9 3.2 0.8 C.4 2000 154.0 135.1 116.9 96.1 68.4 45.8 27.7 17.3 12.1 5.9 3.2 0.8 0.4 1000 149.3 133.8 112.9 92.5 65.5 43.5 26.0 16.1 11.2 5.3 2.9 0.7 800 146.7 131.3 110.6 90.4 63.8 42.1 25.1 15.5 10.7 5.1 2.7 0.3 600 142.9 127.8 107.5 87.5 61.5 40.3 23.9 14.6 10.1 4.7 2.5 0.2 400 136.C 121.4 101.6 82.3 57.4 37.0 21.6 13.0 8.9 4.1 2.1 0.2 300 129.7 115.5 96.3 77.5 53.6 34.1 19.7 11.7 7.9 3.5 1.8 0.2 200 118.3 104.9 86.8 69.1 47.0 29.0 16.4 5.5 6.3 2.7 1.4 0.2 ISO 109.7 97.0 79.0 67.9 42.3 25.5 14.2 8.0 5.3 2.2 1.1 0.2 100 102.8 90.6 74.2 58.0 38.6 22.8 12.4 6.5 4.5 1.8 C.9 0.1 89 96.E 85.0 29.2 53.7 35.3 20.5 11.0 6.0 3.6 1.5 0.7 0.1 60 87.6 76.7 22.0 47.4 30.7 17.3 9.1 4.8 3.0 1.1 0.4 50 81.6 71.3 57.3 43.5 27.8 15.3 7.9 4.1 2.5 C.9 0.3 40 76.5 66.6 53.2 40.1 25.4 13.7 6.9 3.5 2.2 0.7 30 68.0 59.0 46.7 34.6 21.5 11.2 5.5 2.7 1.6 0.5 20 56.7 46.8 38.0 27.6 16.6 8.2 3.8 1.6 1.0 10 41.4 35.2 26.7 18.6 10.7 4.8 2.1 0.5 0.4 IEI• SOIL LOSS FRCD WINO EROSION IX TONS PER ACRE PIP YEAR JANUARY.1581 C • 100 SURFACE - A • 0.5 I - 220 ILI iy1•• - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 110.0 51.3 80.1 63.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 8000 110.0 97.3 80.1 63.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 6000 110.C 57.3 80.1 63.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 4000 110.0 97.3 80.1 23.1 42.5 25.6 14.2 8.0 5.3 2.2 1.1 0.2 • 3000 110.0 97.3 80.1 63.1 42.5 25.6 14.7 8.0 5.3 2.2 1.1 0.2 2000 108.5 55.9 78.8 62.0 41.6 25.0 13.8 7.8 5.1 2.1 1.0 0.2 1000 102.3 90.2 73.8 57.6 38.3 22.6 12.3 6.8 4.4 1.8 0.8 0.1 800 100.0 88.1 71.9 56.0 37.1 21.7 11.8 2.5 4.2 1.7 0.6 0.1 609 54.6 03.1 87.6 52.2 34.3 19.7 10.6 5.7 3.6 1.4 0.4 400 88.3 71.4 22.2 48.0 31.1 17.6 9.2 4.9 3.1 1.2 0.4 300 82.8 72.4 58.2 44.2 28.4 15.7 8.1 4.2 2.6 I.C 0.3 200 74.3 64.7 51.5 38.7 24.4 13.0 6.6 3.3 2.0 0.7 T50 67.9 58.9 46.6 34.5 21.4 11.7 5.5 2.7 1.6 0.5 100 61.0 52.7 41.3 30.2 18.4 5.3 4.4 2.1 1.2 80 56.1 48.8 38.0 27.6 16.6 8.2 3.8 1.8 1.0 60 50.4 43.2 33.3 23.8 14.1 6.7 3.0 1.4 0.8 51 46.2 35.4 30.2 21.3 12.4 5.7 2.6 1.1 0.5 a0 41.9 35.7 27.1 18.9 10.9 4.9 2.1 0.5 0.4 30 36.2 30.7 23.0 15.5 8.9 3.6 1.6 0.5 20 25.5 24.8 18.3 12.2 6.6 2.7 1.1 10 19.6 16.2 11.5 7.3 3.7 1.3 • NOTE: SOIL LOSS FOP VALUES WHERE •E• IS LESS THAN C.1 OR GREATER THAN 440.0 ARE NCI SHOWN; CTHEP VALUES NOT SHOWN ARE INVALID •4 NCTE: VALUES SHOWN ARE FLAT SMALL GRAIN EQUIVALENT. NCI •V• -91- AEI. 5011 LOSS FROM WINO EROSION IN IONS PER ACRE PER YEAR JANUARTA)941D SURFACE - K • I.C I • 180 ILI IV16• - FLAT SMALL-GRAIN RESIDUE IN RCUKCF PER ACRE UNS NEL TF.NEO DISTANCE 0 250 500 750 1000 1250. 1500 11550 200C 2250 2500 2750 3000 IN FEET 10000 180.0 162.5 139.2 116.8 85.4 60.0 37.6 24.E 17.0 9.2 5.4 1.3 C.1 8000 160.0 162.5 139.3 116.8 85.4 60.0 37.6 24.6 17.8 9.2 5.4 1.3 0.7 6000 180.C 162.5 139.1 116.8 05.♦ 60.0 37.6 24.6 11.8 9.2 5.4 1.3 0.1 4000 180.0 162.5 139.3 116.0 85.4 60.0 37.6 24.6 17.8 9.2 5.4 1.3 0.1 3000 180.0 162.5 139.3 116.0 85.4 60.0 31.6 24.6 11.8 9.2 5.4 1.3 0.7 2000 180.0 162.5 139.3 116.8 05.4 60.0 37.6 24.6 17.8 5.2 5.4 1.3 0.7 1000 178.1 160.7 137.6 115.2 84.1 50.9 36.9 24.8 17.3 9.0 5.2 1.3 0.7 800 115.2 158.1 135.1 112.9 82.2 57.3 35.7 23.2 16.7 6.5 4.9 1.2 0.1 600 170.5 153.6 131.0 109.1 79.0 54.6 33.8 21.8 15.6 7.9 4.5 1.1 0.6 400 163.2 146.8 124.7 103.3 14.3 50.7 31.0 19.7 14.0 6.9 3.9 0.9 0.5 300 158.0 141.9 120.3 99.2 71.0 47.5 29.1 18.3 12.9 6.3 3.5 0.8 0.5 200 146.0 130.1 110.1 89.9 63.4 41.8 24.9 15.3 10.6 5.0 2.7 0.3 I50 131.1 122.4 102.6 83.1 56.0 37.5 22.0 13.3 9.1 4.2 2.2 0.2 100 127.8 113.7 54.7 16.1 52.5 33.2 19.1 11.3 7.7 3.4 1.1 0.2 80 120.4 106.9 08.6 10.6 48.2 29.9 17.0 9.5 6.6 2.8 1.4 0.2 60 109.5 96.8 79.E 62.7 42.2 25.4 14.1 9.C 5.2 2.2 L.0 0.2 50 103.9 91.6 75.0 58.7 39.1 23.2 12.7 1.1 4.6 1.9 0.5 0.1 47 58.0 86.3 70.3 54.6 16.0 21.0 11.3 6.2 4.0 1.6 0.7 0.1 30 50.E 75.5 64.4 49.5 32.2 18.3 9.7 5.2 3.3 1.2 0.4 20 74.5 64.9 51.7 38.8 24.5 13.1 6.6 3.3 2.0 0.1 10 55.6 47.6 37.2 26.9 16.2 7.9 3.1 1.1 1.0 IE1• SOIL LOSS E'EN WINO EROSICN IN TONS PEP ACRE PER YEAR JANUART.15111 00 SURFACE - K . 0.7 I • IBC ILI Ivies - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 0.2 10000 126.0 112.1 53.! 74.8 51.5 32.4 18.6 11.0 7.4 3.3 1.7 8000 126.0 112.1 53.3 74.8 51.5 32.4 18.6 11.0 7.4 3.3 1.1 0.2 6000 126.0 112.1 43.3 74.8 51.5 32.4 18.6 11.0 7.4 3.3 1.7 0.2 4000 126.0 112.1 53.3 74.8 51.5 32.4 10.6 11.0 7.4 3.3 L.7 0.2 3000 126.0 112.1 93.3 74.8 51.5 32.4 18.6 11.C 7.4 3.3 1.7 0.2 2000 125.3 111.4 92.6 74.2 51.0 32.1 18.4 10.0 7.3 3.2 1.6 0.2 1000 119.3 105.9 81.7 69.6 47.6 25.5 16.7 9.7 6.5 2.8 1.4 0.2 000 116.7 103.5 85.6 61.9 46.2 20.4 16.0 5.2 6.1 2.6 1.3 0.2 600 111.0 98.2 86.9 63.8 43.0 26.0 14.5 8.2 5.4 2.2 1.1 0.2 400 105.1 92.8 16.0 59.6 39.8 23.7 13.0 7.3 4.7 1.9 0.5 0.1 300 100.4 88.4 12.2 56.3 37.3 21.9 11.9 6.5 4.2 1.7 0.8 0.1 200 91.5 80.1 65.5 50.4 32.9 16.8 10.0 5.4 3.4 1.3 0.4 150 04.4 73.9 59.5 45.4 29.2 16.2 8.4 4.4 2.8 1.0 0.3 100 77.5 67.6 54.1 40.8 25.9 14.0 7.1 3.6 2.2 0.1 0.6 60 63.7 55.1 43.4 31.9. 19.6 10.0 ♦.8 2.3 1.4 SO 59.0 50.9 39.8 29.0 17.6 6.6 4.2 2.C 1.1 40 55.3 47.6 37.0 26.6 16.1 7.8 3.1 1.7 1.0 30 48.5 41.5 32.0 22.7 13.4 6.3 2.8 1.3 0.6 20 39.6 33.6 25.5 17.6 10.0 0.0 0.4 10 26.5 23.9 11.6 11.7 6.3 2.5 1.0 I6I• SOIL LOSS FROM WINO FROSICK IN TENS PER ACRE PER YEAR JANUAR Y.1981 C - 100 SURFACE - K . 0.5 I • 180 ILI IVI•• - FLAT SHALL GRAIN RESIDUE IN PCUKCS PER ACRE UNSHELTERED DISTANCE C 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 90.0 70.9 63.5 44.1 32.0 10.1 9.6 5.1 3.2 1.2 0.4 6000 90.0 78.9 63.5 49.1 32.0 18.1 9.6 5.1 3.2 1.2 0.4 6000. 90.0 18.9 63.9 49.1 32.0 18.1 9.6 5.1 3.2 1.2 0.4 4000 90.0 16.9 63.9 ♦9.1 32.0 16.1 9.6 5.1 3.2 1.2 0.4 3000 90.0 78.9 63.9 49.1 32.0 18.1 9.6 5.1 3.2 1.2 0.4 2000 87.2 76.4 61.7 41.2 30.6 17.2 9.0 4.8 3.0 1.1 0.4 1000 80.0 69.8 56.0 42.4 21.1 14.8 1.6 3.9 2.4 0.8 800 78.0 68.0 54.4 41.0 26.1 14.2 7.2 3.7 2.3 0.8 600 73.2 63.1 50.7 37.9 23.9 12.7 6.4 3.2 1.9 0.6 400 66.0 51.2 45.1 33.3 20.6 10.6 5.2 2.•. 1.5 C.5 300 60.5 52.2 40.5 29.9 18.2 9.1 4.4 2.1 1.2 200 54.1 46.5 36.1 26.0 15.6 1.5 3.5 1.6 0.5 150 ♦8.5 41.5 31.9 22.7 13.3 6.2 2.8 1.3 0.6 100 42.7 36.3 27.7 19.4 11.1 5.C 2.2 C.5 0.4 80 39.4 33.4 25.3 17.5 9.9 4.4 1.9 0.8 0.4 60 33.5 28.3 21.1 14.3 7.9 3.3 1.4 0.•_ 50 30.4 25.5 10.9 12.7 6.9 2.8 1.1 0.4 40 26.8 22.4 16.4 10.8 5.8 2.3 0.9 30 22.5 18.7 13.5 B.1 4.5 1.7 0.6 20 17.E 14.5 10.3 6.4 3.2 1.1 10 10.5 8.4 5.7 3.4 1.5 0.3 • NOTE: SOIL LOSS FCP VALUES %HERE •E• TS LESS THAN 0.1 CP GREATER TFAN 440.0 ARE NCI SHOWN: OTHER VALUES NOT SHCNN ARE INVALID •• NOTE: VALUES SEOWN ARE FLAT SMALL GRAIN EQUIVALENT. NCT .Y' -92- 81 I EIs SOIL LOSS FPCM NINO EROSION IN TENS PER ACRE PER YEAR JANUARY.19C 100 SURFACE - K • 1.C I • 160 ILI IV16• - FLAT SMALL CRAIN RESIDUE IN KURDS PER ACRE UNSNELTEREC OISTANCE 0 750 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 160.6 143.8 122.C 100.8 72.2 45.0 29.8 18.8 13.3 6.5 3.7 0.9 0.5 8000 140.0 143.8 122.0 100.8 72.2 49.0 29.8 16.8 13.3 6.5 3.7 0.9 C.5 6000 180.0 143.8 122.0 100.8 72.2 49.0 29.8 18.8 13.3 6.5 3.7 0.9 0.5 4000 1160.0 143.8 122.C 100.8 12.2 49.0 - 29.8 18.6 13.3 6.5 3.7 0.9 0.5 3000 160.0 143.8 122.0 100.8 72.2 49.0 29.8 18.8 13.3 6.5 3.7 0.9 0.5 2000 160.0 143.E 122.C 100.8 72.2 49.0 29.8 18.8 13.3 2.5 3.1 0.9 0.5 1000 155.0 139.1 117.1 96.9 69.0 46.3 28.0 17.5 12.3 6.0 3.3 0.8 0.4 800 151.0 135.3 114.3 93.1 66.5 44.3 26.6 16.5 11.5 5.5 3.C 0.7 C.4 600 147.3 131.9 111.2 90.9 64.2 42.5 25.4 15.6 10.5 5.1 2.8 0.6 400 140.7 125.7 105.5 85.8 60.2 39.2 23.1 14.1 9.7 4.5 2.4 0.2 300 135.7 121.1 101.4 82.0 557.2 16.8 21.6 13.0 0.9 4.0 2.1 0.2 200 123.3 105.6 91.0 12.8 49.9 31.2 11.8 10.4 7.0 3.1 1.6 0.2 153 114.5 101.5 83.8 66.4 44.9 21.5 15.4 8.8 5.8 2.5 1.2 0.2 100 106.9 54.5 77.6 60.9 40.8 24.4 13.5 1.5 4.9 2.0 1.0 0.1 8) 101.3 89.3 13.0 56.9 31.8 22.2 12.1 6.1 4.3 1.7 0.8 0.1 60 52.3 81.0 65.1 50.7 33.1 18.9 10.1 5.4 3.4 1.3 0.4 50 86.1 15.4 60.8 46.5 30.0 16.E 8.8 4.6 2.9 1.1 0.3 40 20.C 65.E 56.0 42.4 27.1 14.8 7.6 3.9 2.4 G.8 30 12.3 67.8 50.C 37.3 23.4 12.4 6.2 3.1 1.9 0.6 70 60.C 51.8 40.5 29.6 18.0 9.0 4.3 2.0 1.2 IC 44.6 38.0 29.1 20.5 11.9 5.4 2.4 1.0 0.5 IE1• SOIL LOSS FROM WIND EROSION IN TCNS PER ACRE PER YEAR JANUARY.IS800 SURFACE - K • 0.7 1 • 160 ILI 1V1•s - FLAT SMALL GRAIN RESIDUE IN PCU605 PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1756 2000 2250 2500 2150 3000 IN FEET 10000 112.6 95.1 81.1 64.5 43.6 26.4 14.8 6.♦ 5.5 2.3 1.1 0.2 8000 112.0 99.1 81.7 64.5 43.6 26.4 14.8 B.4 5.5 2.3 1.1 0.2 6000 112.0 95.1 81.7 64.5 43.6 26.4 14.8 8.4 5.5 2.3 1.1 0.2 4000 112.0 95.1 81.7 64.5 43.6 26.4 14.8 8.4 5.5 2.3 1.1 0.2 3000 112.0 95.1 81.7 64.5 43.6 26.4 14.8 8.4 5.5 2.3 1.1 0.2 2000 110.1 91.4 80.2 63.2 42.5 25.7 14.3 8.1 5.3 2.2 1.1 0.2 1000 104.3 92.1 15.4 59.0 39.4 23.4 12.8 7.1 4.6 1.9 0.9 0.1 800 101.7 85.7 13.3 57.2 38.0 27.4 12.2 6.7 4.4 1.1 0.E 0.1 600 96.1 85.1 65.3 53.7 35.4 20.5 11.0 6.0 3.9 1.5 6.7 0.1 400 90.3 79.2 64.1 49.3 32.1 18.2 9.6 5.1 3.3 1.2 0.4 300 84.8 74.2 555.8 45.6 29.4 16.4 8.5 4.5 2.5 1.0 0.3 200 76.2 66.4 53.0 39.9 25.3 13.6 6.9 3.5 2.1 0.7 150 69.9 60..7 48.2 35.9 22.4 11.7 5.8 2.5 1.1 C.6 100 63.0 54.5 42.9 31.5 19.3 9.8 4.7 2.3 1.3 80 58.3 50.2 39.2 28.5 17.3 8.6 4.1 1.5 1.1 60 51.9 44.5 34.4 24.7 14.7 7.0 3.2 1.5 0.8 50 41.8 40.0 31.4 22.3 13.1 6.11 2.1 1.2 C.55 40 43.1 37.2 28.4 19.9 11.5 5.2 2.3 1.0 0.4 30 31.7 31.9 24.0 16.6 9.3 4.1 1.7 C.6 20 30.9 26.0 19.3 12.9 7.1 2.9 1.2 C.♦ 10 20.7 17.1 12.3 7.8 4.0 1.5 0.5 CFI* SOIL LOSS FROM NINC EROSION IN ICHS PUS Ft71 TTY 14YR 64.v148.0-..100 SURFACE - K • C.5 I • 160 ILI Iv)** - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE L'NSHE L TERFO nISTANCF C 250 SCC 750 1000 1250 1500 1150 2CCC 2250 2500 2750 'COL IN FEET 10000 00.0 65.8 56.0 47.4 27.1 14.8 7.6 3.5 2.4 C.E 5000 80.C 69.8 56.0 42.4 27.1 14.8 1.6 3.9 2.4 0.R 6000 00.0 65.8 56.C 42.4 27.1 14.8 7.6 3.5 2.4 0.6 4000 80.0 69.8 56.0 42.4 27.1 14.6 7.6 3.9 2.4 0.8 3000 79.1 69.0 55.3 41.0 26.6 14.5 7.4 3.8 7.4 C.8 2000 76.6 66.1 53.3 40.1 25.4 13.7 7.0 3.5 2.2 0.7 1000 70.5 61.6 40.5 36.5 22.8 12.0 6.0 3.0 1.8 0.6 RCO 69.55 54.4 47.0 34.9 21.1 11.3 5.6 2.8 . 1.7 C.5 600 03.C 54.5 42.E 31.5 19.3 5.8 4.7 2.3 1.3 400 57.4 45.4 38.6 28.0 16.9 0.4 3.9 1.8 1.1 300 5.3.3 45.0 35.5 75.6 15.3 7.4 3.4 1.6 0.9 200 47.3 40.4 31.1 22.0 12.9 t.0 2.7 1.2 0.5 150 41.3 35.2 26.1 18.6 10.7 4.0 2.1 0.5 0.4 100 36.2 30.7 23.0 15.8 8.9 3.0 1.6 0.5 80 32.8 27.1 20.6 14.0 7.7 3.2 1.3 0.4 60 27.5 23.4 11.2 11.4 6.1 2.4 0.9 50 24.4 20.3 14.6 9.6 5.1 1.9 0.7 40 21.5 18.2 13.1 8.4 4.4 1.6 0.6 30 18.1 15.4 11.0 6.9 3.5 1.2 20 13.8 11.2 1.1 4.7 2.3 C.1 l0 1.E 6.2 4.1 2.3 0.9 THAN C.I OR• NOTE: LO44SS FOR VALUE WHERE 111 IS ARE NCI SHOWN: (THEP VALUES NOT SHOWN GREATER THAN SHOWN ARE INVALID ss NCIE: VALUES SHOWN ARE FLAT SMALL GRAIN FOUIVALFAT. NOT 'V' -93- • IE18 SOIL Less FPCM MIND .POSICN- IN IONS PER ACRE PEP YEAR JANUARY.1981 C 100 SURFACE - N • 1.0 I • 134 ILI IVIP9 - FLAT SMALL GRAIN_.RESIDUE, IN PCUNCS PER. ACRE UNSHELTERED: DISTANCE 0 250 SOC 750 1000 .1.250 1500 17•.C 2000 2250 25CC 2750 3000 IN FEET 10000 134.0 115.5 59.9 80.7 56.2 36.0 21.0 12.6 8.6 3.9 2.0 0.2 8000- 134.0 115.5 99.9 80.7 56.2 36.0 21.0 12.6 B.6 3.9 2.C 0.2 6000 134.0 115.5 99.5 80.1 56.2 36.0 21.0 12.6 8.6 3.9 2.0 0.2 4000 134.0 119.5 59.9 80.7 56.2 36.0 21.0 12.6 6.6 3.9 2.0 0.2 3000 134.0 119.5 99.5 80.1 56.2 36.0 21.0 12.6 8.6 3.9 2.C 0.2 2000 134.0 119.5 99.9 80.1 56.2 36.0 21.0 12.6 8.6 3.9 2.0 0.2 1000- 128.4 114.3 55.2 76.5 52.8 33.5 19.3 11.4 1.7 3.4 1.8 0.2 800 126.7 112.8 93.5 15.3 51.9 32.1 18.8 11.1 7.5 3.3 1.7 0.2 600 120.1 104.1 88.4 70.5 48.1 29.8 16.9 5.8 6.6 2.8 1.4 0.2 400 113.2 100.3 82.7 65.4 44.2 26.9 15.1 8.6 5.7 2.4 1.2 0.2 300 108.4 95.8 78.1 61.9 41.6 25.0 13.8 7.6 5.1 2.1 I.C 0.2 200 100.5 80.5 72.3 56.3 37.3 21.9 11.9 6.6 4.2 1.7 0.8 0.1 150 52.9 81.6 66.2 51.1 33.4 15.1 10.2 5.5 3.5 1.3 0.4 100 05.3 74.1 60.2 45.9 29.6 16.5 0.6 4.5 7.8 1.0 0.3 80 79.3 69.2 55.4 41.9 26.7 14.6 7.5 3.8 2.4 0.8 60 71.5 62.1 49.3 36.8 23.1 12.2 6.1 3.0 1.8 0.6 50 66..3 57.4 45.3 33.5 20.7 10.1 5.2 2.6 1.5 C.5 40 61.C 52.7 41.3 30.2 18.4 5.3 4.4 2.1 1.2 30 54.1 46.5 36.1 26.0 15.6 1.6 3.5 1.6 0.9 20 44.9 38.3 29.3 20.6 12.0 5.5 2.4 1.1 0.5 10 32.3 27.2 20.2 13.1 7.5 3.1 1.3 0.4 IE14 SOIL LOSS FROM WIND EROSION IN TONS PER ACRE PER TEAR JANUARY.1981 C • 100 SURFACE - K • 4.7 - - I • 134 ILI IVI** - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 SOC 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 93.8 82.4 66.5 51.7 33.5 19.5 10.4 5.6 3.6 1.4 0.4 8000 93.8 82.4 66.5 51.7 33.9 19.5 10.4 5.6 3.6 1.4 0.4 1000 53.8 87.4 66.5 51.1 33.9 19.5 10.4 5.6 3.6 1.4 0.4 400n 93.8 P2.4 66.9 51.7 33.9 19.5 10.4 5.6 3.6 1.4 0.4 3000 93.8 87.4 66.9 51.7 33.9 19.5 10.4 5.6 3.6 1.4 0.4 2000 91.4 80.2 65.0 50.0 32.7 16.6 9.9 5.3 3.4 1.3 0.4 1000 84.3 73.8 59.4 45.3 29.1 16.2 8.4 4.4 2.8 1.0 0.3 800 81.7 71.4 51.3 43.5 21.9 15.4 1.9 ♦.1 2.5 0.9 0.3 600 76.7 66.9 51.4 40.2 25.5 13.8 7.0 3.6 2.2 0.7 40n 70.3 61.1 4!.S 36.1 22.6 11.9 5.9 2.9 1.8 0.6 300 64.8 56.1 44.2 32.6 20.1 10.3 5.0 2.4 1.4 200 57.4 45.4 38.6 28.0 36.9 8.4 3.9 1.8 1.1 150 51.0 44.5 34.4 24.7 14.1 1.0 3.2 1.5 0.8 100 46.1 39.4 30.2 21.3 12.4 5.7 2.6 1.1 0.5 PO 42.5 36.2 71.6 19.3 .11.1 5.0 2.2 0.5 0.4 60 35.9 30.4 22.8 15.6 8.1 3.7 1.6 0.5 50 32.8 27.7 20.6 13.9 7.7 3.2 3.3 0.4 40 29.P 25.1 70.5 12.4 6.7 2.1 is 30 24.7 2C.6 15.0 9.8 5.2 2.0 0.7 20 19.5 16.2 11.5 7.3 3.7 1.3 10 I2.C 9.8 6.7 4.0 1.9 0.4 161f SCI:-0£55 EGER.WINR.EROSICN IN TONS PER ACRE PER TEAR JANUARY.1981 C 1^_ SURFACE - K • 0.5 1 • 134 ILI IV1•• - FLAT SMALL GRAIN RESIDUE IN PCUNOS PER ACRE UNSFELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FFE9 10000 61.0 58.1 45.5 34.0 21.1 10.9 5.4 2.6 1.6 0.5 8000 61.0 50.1 45.9 34.0 21.1 10.9 5.4 2.6 1.6 0.5 6000 -67.C 58.1 45.5 34.0 21.1 10.9 5.4 2.6 1.6 0.5 4000 64.9 56.2 A4.3 32.6 20.1 30.3 5.0 2.4 1.4 3000 63.3 54.7 43.1 31.6 19.4 9.9 4.8 2.3 1.4 2000 61.7 53.3 41.8 30.1 18.7 9.5 4.5 2.2 1.3 1000 54.8 47.1 36.6 26.5 15.9 7.7 3.6 1.7 1.0 600 53.2 45.7 35.4 25.5 15.2 7.3 3.4 1.6 0.9 600 49.9 42.8 33.0 23.5 33.9 6.6 3.0 1.3 0.6 400 45.1 36.4 29.4 20.7 12.0 5.5 2.4 1.1 0.5 300 41.2 35.1 26.6 18.5 10.6 4.7 2.1 0.5 0.4 200 35.5 30.0 22.5 15.4 8.6 3.1 1.5 C.5 150 31.6 26.6 19.1 13.3 7.3 3.0 1.2 0.4 100 77.2 22.8 16.7 11.0 5.9 2.3 0.9 80 23.5 15.9 14.5 9.4 4.9 1.9 0.7 60 20.1 16.6 11.9 7.6 3.9 1.4 0.5 50 17.1 14.5 10.3 6.4 3.2 1.1 40 15.2 12.5 !.7 5.4 2.6 0.9 30 12.1 5.8 6.0 4.0 1.9 0.4 20 8.3 6.6 4.4 2.5 1.1 0.2 10 3.0 2.3 1.4 0.7 • N[IE: SOIL LOSS FOR VALUES WHERE 'E' IS LESS THAW 0.1 CR [PESTER THAN 440.0 ARE NCI SHOWN; CTHEP VALUES NOT SHOWN ARE INVALID es NCIF: VALUES SFONN APE FLAT SMALL GRAIN EQUIVALENT. NOT 'V' -94- (EIS SOIL LOSS FPCP MIND EROSICN IN IONS PER ACRE PER TEAR JANUARY..191100 SURFACE - R • 1.C 1 • 86 ILI (Vise - FLAT SMALL GRAIN RESIDUE IN PCU0CS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2150 3000 IN FEET 10000 66.C 75.3 60.7 46.4 30.0 169 8.8 4.6 2.5 1.1 0.3 8000 06.0 75.3 60.1 46.4 30.0 16.8 8.8 4.6 2.9 1.1 0.3 6000 06.0 15.3 60.1 46.4 30.0 16.8 6.8 4.6 2.9 1.1 0.3 4000 86.0 75.3 60.7 46.4 30.0 16.0 0.8 4.6 2.9 1.1 0.3 3000 85.6 14.9 60.4 46.1 29.7 16.6 8.7 4.6 2.9 1.1 0.3 2000 02.7 72.3 58.1 44.2 20.3 15.1 6.1 4.2 2.6 1.0 0.3 1000 76.4 66.5 53.1 40.0 25.3 13.1 6.9 3.5 2.2 0.7 800 74.2 64.6 51.5 36.6 24.3 13.0 6.6 3.3 2.C 0.7 600 69.3 60.1 47.7 35.4 22.1 11.6 5.7 2.6 1.3 0.5 400 62.2 53.1 42.2 31.0 19.0 9.6 4.6 2.2 1.3 300 57.6 49.6 38.7 28.1 17.0 8.4 4.0 1.9 I•1 200 51.4 44.1 34.1 24.4 14.5 6.9 3.2 1.4 0.8 ISO 45.6 30.9 29.8 21.0 12.2 5.6 2.5 1.1 0.5 100 39.8 33.6 25.6 17.7 10.1 4.5 1.9 0.6 0.4 80 36.6 31.0 23.3 16.0 9.0 3.9 1.6 0.5 60 31.4 26.4 15.6 13.2 7.2 3.0 1.2 0.4 50 27.9 23.4 11.2 11.4 6.1 2.4 0.9 40 24.4 20.4 14.8 9.1 5.1 1.9 0.7 30 21.0 17.4 12.5 6.0 4.1 1.5 0.5 20 3.0 9.1 5.6 2.6 C.9 10 19.4 5.9 17.5 5.1 2.9 1.3 0.3 (E1s SOIL LOSS FROM MIND EROSION IN TONS PER ACRE PER TEAR JNNUICfA961• 00 SURFACE - P • 0.1 I • 86 ILI (V16e - FLAT SMALL GRAIN RESIDUE IN POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 S0C 750 1000 1250 1500 1150 2000 2250 25C0 2750 3000 IN FEET 10000 60.2 52.0 40.7 29.7 16.1 9.1 4.3 2.1 1.2 8000 60.2 52.0 40.7 29.7 18.1 9.1 4.3 2.1 1.2 6000 60.2 52.0 4C.7 29.7 18.1 9.1 4.3 2.1 1.2 4000 59.2 51.1 39.5 29.1 17.7 8.8 4.2 2.0 1.2 3000 57.9 49.9 39.0 28.3 17.1 8.5 4.0 1.9 1.1 2000 55.7 47.9 1000 49.4 42.3 32.6 23.2 13.7 6.5 2.9 1.3 0.6 800 47.5 40.9 31.5 22.3 13.1 6.1 2.6 1.2 0.5 600 43.6 37.2 26.4 19.9 11.5 5.2 2.3 1.0 0.4 400 38.9 33.0 24.9 17.2 9.8 4.3 1.0 0.6 0.3 300 35.5 30.0 22.5 15.4 6.6 3.7 1.5 0.5 200 30.9 26.C 19.3 13.0 7.1 2.9 1.2 0.4 150 26.2 21.9 I6.C 10.5 5.6 2.2 0.8 100 22.6 18.8 1?.6 8.0 4.6 1.7 0.6 80 20.1 16.6 11.5 1.6 3.9 1.4 0.5 60 15.7 12.8 9.0 5.6 2.7 0.9 50 13.8 11.2 7.8 4.7 2.3 0.7 40 12.1 9.8 6.7 4.0 1.9 0.4 30 9.1 7.3 4.9 2.8 1.3 0.3 20 5.1 4.0 2.6 1.4 0.5 10 2.0 1.5 0.8 (El4 SOIL LOSS FPCM NINO EROSION IN T[NS PER ACRE PER TEAR JANUARY.I981 SURFACE - R • 0.•. I • 06 ILI IVlse - FLAI SMALL GRAIN RESIDUE 16 POUNDS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2O00 2250 25CC 2750 3000 IN FEET 10000 43.0 36.6 27.5 19.5 11.3 5.1 2.2 I.C 0.4 0000 43.0 36.6 27.9 19.5 11.3 5.1 2.2 1.C 0.4 6000 43.0 36.6 27.5 19.5 11.3 5.1 2.2 I.C 0.4 4000 40.8 34.7 26.3 18.3 10.5 4.7 2.0 0.9 0.4 3000 39.4 33.4 25.3 17.5 10.0 4.4 1.9 0.8 0.4 2000 36.5 31.2 21.5 16.1 5.1 3.9 1.6 0.6 1000 32.4 27.3 20.3 13.7 1.6 3.1 1.3 0.4 600 30.4 25.6 16.9 12.7 6.9 2.8 1.1 C.4 600 27.3 22.8 16.7 11.1 5.9 2.3 0.9 400 23.4 15.4 14.1 9.1 4.8 1.8 0.7 300 21.1 17.5 12.6 8.0 4.1 1.5 0.5 200 17.0 14.0 9.9 6.1 3.1 1.0 150 13.9 11.3 1.9. 4.8 2.3 0.1 100 11.3 9.2 6.3 3.7 1.7 0.3 00 9.4 1.5 5.1 2.9 1.3 C.3 60 6.4 5.1 3.3 1.@ 0.7 50 4.8 3.8 2.4 1.3 0.5 40 1.9 3.1 1.5 0.9 30 2.7 2.1 1.3 0.6 20 1.4 1.1 0.6 10 e NOIE: L ARE NCT SHOW.: GREATER THAN OTHER VALUES NOT SHOWN APE INVALID 440.0 i 4e NOTE. VALUES SHOWN ARE FLAT SMALL GRAIN EOUIVALENI. NOT 'V * -95- • IEl. 5CIl LOSS FROM WIND ER057CN 14 TCNS PER ACRE PER VEAR JANUARV.1981 C • 100 SURFACE - A e I.C I • 56 ILA Iv)** - FLAT SMALL GRAIN RESIDUE IN POUNDS.PER ACRE UNSHELTERED DISTANCE C 250 500 750 1000 125C 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 56.C 48.2 31.5 27.2 16.3 8.0 3.8 1.7 1.0 8000 56.C 49.2 37.5 27.2 16.3 8.0 3.8 1.7 1.0 6000 56.C 48.2 37.5 27.2 16.3 8.0 3.8 1.1 1.0 4000 54.1 47.0 36.5 26.4 15.8 1.1 3.6 1.1 1.0 3000 53.3 45.8 35.! 25.6 15.3 7.4 3.4 1.6 0.9 2000 51.1 43.8 33.9 24.2 14.4 6.8 3.1 1.4 0.8 1000 44.5 35.3 29.3 20.6 12.0 5.5 2.4 1.1 0.5 803 42.8 36.5 21.! 19.4 11.2 5.1 2.2 1.0 0.4 600 38.5 33.0 25.0 11.3 9.8 4.3 1.8 0.8 0.3 400 15.0 29.6 22.1 15.1 8.4 3.6 1.5 C.5 300 32.C 27.C 20.1 13.5 1.4 3.1 1.2 0.4 200 26.8 22.4 16.4 10.8 5.8 2.3 0.5 151 22.8 19.0 13.1 8.9 4.6 1.7 0.6 100 19.5 It.1 11.5 1.3 3.7 1.3 90 16.9 13.9 9.8 6.1 3.0 1.0 60 11.2 IC.8 1.5 4.5 2.1 0.4 50 11.5 9.3 8.4 3.8 1.8 0.3 40 9.7 7.8 5.3 3.1 1.4 0.3 3n 6.7 5.4 1.5 1.9 0.8 20 4.0 3.1 1.5 0.9 10 1.5 1.1 C.6 I8I• SOIL LOSS FROM NINO EPOSICI. Ip TOIS PER RCR€ PIP ME JANUARY.1981 C • 100 SURFACE - N • 0.1 I • 56 IL1 IV14• - FLAT SMALL GRAIN RESIDUE IN PEONES PEP ACRE UNSHELTERED O15TANCE 0 250 500 150 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 39.2 33.3 25.2 17.4 9.9 4.3 1.9 0.8 0.4 8000 39.2 33.3 21.7 11.4 9.9 4.3 1.9 0.8 0.4 N000 39.1 33.2 25.1 17.3 9.8 4.3 1.8 C.8 0.3 4000 31.2 31.5 23.1 16.3 9.2 4.0 1.1 0.6 3000 35.9 10.3 22.8 15.6 8.7 3.1 1.6 0.5 2000 33.4 20.2 21.0 14.3 7.9 3.3 1.4 0.5 100n 28.8 24.1 1l.! 11.8 6.4 2.6 1.0 800 26.f 22.2 18.3 10.7 5.7 2.2 0.9 600 23.5 19.9 14.5 9.4 4.9 1.9 0.7 400 20.6 11.1 12.3 7.8 4.0 1.4 0.5 300 18.3 15.1 10.7 6.7 3.4 1.2 200 14.4 II.! 8.2 5.0 2.4 0.8 ISO 11.8 5.8 6.6 3.9 1.8 0.4 100 9.1 7.5 5.0 2.9 1.3 0.3 PO 1.2 5.8 3.! 2.1 0.8 60 4.1 3.1 2.3 1.2 0.5 50 3.8 3.0 1.8 0.9 40 2.5 2.3 1.4 0.6 30 1.9 1.4 0.8 20 1.0 0.5 10 IF1* SOIL LOSS FROM 1.1ND EROSION IN IONS PEP ACRE PEP YEAR JANUARY.19E1 C • 100 SURFACE - K • 0.! I • 58 ILI (V14• - FIAT SMALL GRAIN RESIDUE IA Pf4NES RF9 ACPE UNSHELTERED DISTANCE C 750 50C 150 1000 12550 1500 17550 20CC 2250 2500 2750 3000 IN FEET '0000 28.4.. 23.5 11.3 11.4 6.2 2.4 0.5 8000 28.C ?3.5 11.3 11.4 6.2 2.4 0.9 6000 27.C 22.6 18.6 10.9 5.9 2.3 0.5 4000 25.0 70.6 15.2 9.9 5.2 2.0 0.8 3000 23.! 15.8 14.4 5.4 4.9 1.8 0.7 2000 22.1 II.! 13.2 8.5 4.4 1.6 0.4 1000 18.1 14.9 10.6 6.6 3.3 1.2 900 16.4 13.4 9.5 5.9 2.9 1.C 600 I4.C 11.4 1.9 4.8 2.3 C.7 400 11.1 9.5 6.5 3.9 1.8 0.4 300 9.5 7.8 5.1 1.0 1.3 0.1 200 6.4 ..1 3.3 1.8 0.1 150 4.3 3.4 2.1 1.1 0.4 100 3.0 2.4 1.4 0.1 NO 2.C 1.5 C.! 60 1.3 1.0 0.5 50 0.9 C.5 40 0.1 C.4 30 20 13 • NOTE: SOIL LOSS ECM VALUES WHERE •E5 IS LESS THAN 0.1 CR GREATER LEAN 440.0 ARE NCT SHOWN; OTHER VALUES NOT SHOWN PRE INVALID 44 NOTE: VALUES SHONE ARE FLAT SMALL GRAIN EQUIVALENT. MC1 .V: -96- IF)* SOIL LCS5 FROM WIND EROSICA IA TONS PEP ACRE PER YEAR JANUARY.191G0 SURFACE - K • 1.0 I • 48 IL) twist, - FLAT SMALL GRAIN RESIDUE III PCUNCS PER ACRE UNSHELTERED DISTANCE n 250 5CC 750 1000 1250 1500 I75C 2000 2250 2500 2750 3000 IN FEET 10000 48.0 41.1 31.6 22.4 13.2 6.1 2.8 1.2 0.5 8000 48.0 41.1 31.6 22.4 13.2 6.1 2.8 1.2 0.5 6000 48.0 41.1 31.6 22.4 13.2 6.1 2.8 1.2 0.5 4000 46.0 39.3 30.1 21.2 12.4 5.7 2.5 1.1 0.5 3000 44.5 37.9 29.0 20.4 11.8 5.4 2.4 I.C 0.5 2000 41.9 35.7 27.1 18.9 10.9 4.9 2.1 0.9 0.4 1000 36.E 31.2 23.4 16.1 9.0 3.9 1.6 0.6 800 34.6 29.2 21.8 14.9 8.3 3.5 1.5 0.5 600 31.8 28.7 19.5 13.4 7.4 3.0 1.2 0.4 400 28.0 21.4 17.2 11.4 6.1 2.4 0.9 300 24.6 20.5 14.5 9.7 5.1 2.0 0.7 200 20.7 17.1 12.3 7.8 4.0 1.5 0.5 150 17.0 14.0 9.5 6.2 3.1 1.0 100 13.8 11.3 7.8 4.8 2.3 0.7 80 12.0 5.8 6.1 4.0 1.9 0.4 60 9.0 7.2 4.1 2.8 1.2 0.3 50 7.2 5.7 3.8 2.1 0.8 40 5.4 4.2 2.7 1.5 0.6 30 3.9 3.0 1.9 0.9 20 2.0 1.5 0.8 10 0.@ 0.4 IE1• SOIL LOSS FPCM WINO EROSICN IA TONS PER ACRE PER YEAR JANUARY.1981 SURFACE - L • 0.7 I • 48 IL) IV)** - FLA1 SMALL GRAIN RESIDUE IN PCUNCS PEP ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 31.8 28.3 21.2 14.4 8.0 3.3 1.4 0.5 8000 33.6 28.3 21.2 14.4 8.0 3.3 1.4 0.5 6000 32.5 27.7 20.7 14.0 7.7 3.2 1.3 0.4 4000 31.4 26.4 19.6 13.2 7.2 3.0 1.2 0.4 3000 29.9 25.1 18.5 12.4 6.7 2.1 1.1 2000 27.4 23.0 16.5 11.2 6.0 2.4 0.9 1000 22.7 18.9 13.7 8.8 4.6 1.7 0.6 800 21.5 17.8 12.8 8.2 4.2 1.5 0.6 600 19.1 15.7 11.2 7.1 3.6 1.3 400 16.0 12.1 9.2 5.7 2.8 0.9 300 13.5 11.3 7.9 4.8 2.3 0.7 200 10.8 8.7 5.9 3.5 1.6 0.3 ISO 7.9 2.4 4.2 2.4 1.0 100 5.1 4.0 2.6 1.4 0.5 80 4.2 3.3 2.1 1.1 0.4 60 2.7 2.1 1.3 0.6 50 1.5 1.4 0.8 40 1.5 1.1 0.2 30 C.5 0.5 20 10 111* SOIL LOSS FROM WINO EROSION IN TONS PER ACRE PEP YEAR JANUARY.1581 SURFACE - K • 0.5 I • 48 ILI its)** - FLAT SMALL GRAIN RESIDUE IA PCUNCS PER ACRE UNSHELTERED DISTANCE C 75C 50C 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IN FEET 10000 24.0 20.0 14.5 9.4 5.0 1.5 0.7 8000 24.0 20.0 14.5 9.4 5.0 1.9 0.7 6000 23.1 15.2 13.5 9.0 4.7 1.8 0.7 4000 21.5 18.2 13.1 8.4 4.4 1.6 0.6 3000 20.2 16.E 12.C 7.6 3.9 1.4 0.5 2000 18.7 15.5 11.0 6.9 3.5 1.2 1000 14.4 11.8 8.2 5.0 2.4 0.8 800 13.2 10.8 7.4 4.5 2.1 0.4 600 11.1 8.5 6.1 3.6 1.7 0.3 400 8.7 7.0 ♦.7 2.7 1.2 C.2 300 6.2 4.9 2.0 1.0 0.4 200 4.1 100 2.8 2.2 1.3 0.6 100 1.2 1.4 0.7 80 1.2 0.4 C.5 60 0.5 0.4 50 0.5 C.3 40 30 20 10 • NOIE: 5011 LCSS FOP VALUES WHERE 'E' IS LESS THAN C.1 CP GREATER THAN 440.0 APE NCT SHOWN; ETHER VALUES NOT SHOWN APE INVALIC •• NOTE: VALUES SFCWN ARE FIAT SMALL GRAIN EQUIVALENT. NOT 'V' -97- • 1E1+ SOIL LOSS FRCP WINO EROSION IF 7CNS PER ACRE PEP YEAR JANUA`Y.1981 SURFACE - a 1.C. I a 38 171 1V14• - FLAT SMALL:GRAIN RESIDUE IN PCUNCS PER ACRE UNSHELTERED OISTANCF 0 250 SOC 750 1000 1250 1500 175C 2CCO 2250 2500 2750 3000 IN FEET 10000 38.0 32.2 24.3 16.7 9.5 4.1 1.7 C.6 8000 38.0 32.2 24.3 16.7 9.5 4.1 1.7 C.6 6000 37.7 31.9 24.1 16.6 9.4 4.1 1.7 0.6 4000 35.9 30.3 22.6 15.6 8.7 3.7 1.6 c.5 3000 34.5 29.1 21.6 14.8 8.2 3.5 1.4 0.5 2000 32.2 77.2 20.2 13.6 7.5 3.1 1.3 C.4 1000 27.2 72.8 16.7 11.0 5.9 2.3 0.9 800 25.1 21.0 15.3 10.0 5.3 2.0 0.8 600 22.9 15.0 13.8 8.9 4.6 1.1 0.6 400 19.7 16.3 II.? 7.4 3.8 1.3 300 17.3 14.3 10.1 6.3 3.1 1.1 200 11.7 11.2 7.7 4.7 2.3 0.7 150 11.0 6.9 2.1 3.6 1.7 C.3 I00 8.4 6.8 4.5 2.6 1.1 0.2 80 6.4 5.1 3.3 1.8 0.7 60 4.3 3.4 2.1 1.1 0.4 50 3.4 2.6 1.6 0.8 40 2.`. 1.5 1.1 0.5 30 1.7 1.1 0.7 20 0.9 C.5 10 IE1• SOIL LOSS FROM WIND EROSION I6 TONS PER ACRE PEP YEAR JANUARY.1981 00 SURFACE - K ' 0.7 I • 38 ILI (VISA - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE UNSMELYE RED DISTANCE 0 250 50C 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 26.6 22.2 16.3 10.7 5.7 2.2 0.9 A000 26.6 22.2 16.3 10.7 5.7 2.2 0.9 6000 25.5 21.3 15.5 10.2 5.4 2.1 0.6 4000 24.0 20.0 14.5 9.5 S.C 1.9 0.7 3000 22.6 18.8 13.6 8.8 4.6 1.7 0.6 2000 21.0 17.4 12.5 8.0 4.1 1.5 0.5 1800 15.1 12.4 8.7 5.3 2.6 0.9 600 13.0 10.6 7.3 4.4 2.1 0.4 400 10.7 8.7 5.9 3.5 1.6 0.3 300 6.4 6.7 4.5 2.6 1.1 0.2 200 5.3 4.2 2.7 1.4 0.6 150 3.9 3.0 1.5 0.9 100 2.2 2.0 1.2 0.6 80 I.@ 1.3 C.7 60 1.0 0.8 C.4 50 0.8 0.5 40 0.6 0.4 10 20 10 1E1. SOIL LOSS FPCM VINO EROSION IN TONS PER ACRE PEP TEAR JANUARY.1981 C + 100 SURFACE - A 0.5 I - 38 ILI 1V1•• - FLAT SMALL GRAIN RESIDUE IN PCUNCS PER ACRE UN S NELTERED DISTANCE 0 250 500 750 1000 1250 1500 I75C 2000 2250 25CC 2750 3000 IN FEET 10000 19.C 15.7 11.2 7.1 3.6 1.3 8000 18.9 15.6 11.1 7.0 3.5 1.2 6000 17.8 74.7 10.4 6.5 3.3 1.1 4000 16.7 13.8 5.7 6.0 3.0 1.0 3000 15.0 12.3 8.6 5.3 2.6 0.8 2000 13.8 11.2 7.! 4.7 2.3 0.7 1000 10.1 8.1 5.5 3.2 1.5 C.3 A00 8.8 7.1 4.7 2.7 1.2 0.2 600 6.5 5.5 3.6 2.0 0.8 400 4.5 3.5 2.2 1.2 0.5 300 3.4 2.6 1.6 0.8 200 1.! 1.4 C.7 150 1.2 0.5 C.5 100 0.8 0.5 80 0.5 0.3 60 50 40 30 20 10 • NOTE: SOIL LOSS FOR VALUES WHERE 'E' IS LESS THAN 0.1 OP GREATER THAN 440.0 ARE NCI SHOWN: OTHER VALUES NOT SHOWN ARE INVALID •• NOTE: VALUES SHOWN ARE FLAT SMALL GRAIN EOUIVALENI. NCI 'V' -98- 81 ((It SOIL LOSS FPCM WINO ERCSI(M I6 1CN$ PER ACRE PEP YEAR JANUARV.19C I00 SURFACE - K • 1.C I - 21 ILI IV144 - FLAI SMALL GRAIN RESIDUE I6 PCUNCS PER ACRE UNSHELTERED -- DISTANCE 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 IK FEET 10000 21.0 17.4 12.5 6.0 4.1 1.5 0.5 2000 21.0 11.4 12.5 8.0 4.1 1.5 0.5 6000 20.0 16.5 11.9 7.5 3.8 1.4 0.5 4000 18.9 15.6 11.1 7.0 3.5 1.2 3000 17.1 14.1 10.0 6.2 3.1 1.1 2000 15.2 12.8 9.0 5.5 2.7 0.9 1000 11.e 9.6 6.6 3.9 1.8 0.4 B00 10.6 E.5 5.8 3.4 1.6 0.3 600 8.6 6.9 4.6 2.6 1.2 0.2 400 5.8 4.6 3.0 1.6 0.6 300 4.3 3.1 2.1 1.1 0.4 200 2.5 1.9 1.1 0.5 151 1.6 1.2 0.7 100 1.1 C.8 0.4 tO 0.7 0.4 to SO 40 30 20 ID If)* SOIL LOSS FROM WINO EROSICM IN TONS PER ACRE PER YEAR JANUARY.1581 100 SURFACE - K • 0.7 1 • 21 ELI IYIN - FLAT SMALL GRAIN RESIDUE IN POUNDS PEP ACRE UNSHELTERED SCOO DISTANCE 0 250 SOC 750 1000 1250 1500 1750 2000 2250 2500 2750 IN FEET 10000 14.1 12.0 8.4 5.1 2.5 C.8 8000 14.3 11.7 8.1 5.0 2.4 0.8 6000 13.6 11.1 7.7 4.6 2.2 C.7 4000 12.5 10.5 7.2 4.3 2.1 0.4 3000 11.1 9.5 6.55 3.8 1.8 0.4 2000 9.8 7.9 5.3 3.1 1.4 0.3 1000 6.5 5.1 1.3 1.8 0.7 800 5.0 3.9 2.5 1.3 0.5 600 4.0 3.1 2.0 1.0 0.4 400 2.7 2.1 1.3 0.6 300 1.8 1.4 C.7 200 1.1 0.8 0.4 150 0.7 6.4 100 80 60 50 40 30 20 10 1E1e SOIL LOSS FROM WINO EROSION IN 'CAS 6fa Lfef it Oa 12AYJ1R752582D SUPFICE - P - 0.5 I • 21 ILI (v)** - FLAT SMALL GRAIN RESIDUE 14 PCUNCS PEP ACRE UNSHELTERED DISTANCE C 250 SOC 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FRET 10000 10.5 P.5 5.2 3.4 1.6 0.1 8000 10.1 2.2 5.5 3.2 1.5 0.3 6000 9.7 7.P 5.3 3.1 1.4 0.3 4000 8.3 6.7 4.4 2.5 1.1 0.2 3003 7.5 6.0 4.0 2.2 0.9 2001 5.9 4.7 3.0 1.6 0.6 1000 3.7 2.9 1.8 0.9 800 3.1 2.4 1.5 0.1 600 2.0 1.5 C.8 400 1.4 1.1 0.6 300 1.0 0.6 200 0.6 C.3 150 100 RO 60 50 40 30 20 10 4 NOTE: SrIL LCSS FIR VALUES WHERE 'E• 15 LESS THAN C.1 CR GREATER THAN 440.0 APE NCI SHOWN`. OTHER VALUES NOT SHOWN APE INVALID P4 NOTE: VALUES SFCWN APE FLAT SMALL GRAIN EOUIVALEN1. NOT •V. -99- 1E14 SOIL USE FRCM VINO EROSICN IA TENS PER ACRE PER YEAR JANUARY.1451 SURFACE - M.• 1.0 00 I • 12 ILI IVIMP - FLAT SMALL GRAIN RESIDUE IN POLNCS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IN FEET 10000 12.0 5.7 6.7 4.0 1.9 0.4 8000 11.6 9.4 6.4 3.8 1.8 0.3 6000 11.1 9.0 6.1 3.6 1.7 0.3 4000 9.9 8.0 5.4 3.1 1.4 0.3 3000 9.0 7.2 4.8 2.0 1.3 0.3 2000 7.3 5.8 3.8 2.1 0.8 1000 4.4 3.5 2.2 1.1 0.4 800 3.7 2.9 1.8 0.9 600 2.7 2.1 1.3 0.6 400 1.7 1.3 C.7 300 1.3 1.0 0.5 200 0.7 0.4 150 100 80 60 SO 40 30 20 10 IE N SOIL LOSS FPCM NINO (1051(6 IN TONS PER ACRE PER YEAR JANUARV.1981 s 100 SURFACE - R • 0.7 I • 12 ILI (VI** - FLAT SMALL GRAIA RESIDUE IN PCUNCS PER ACRE UNSHELTERED 3000 DISTANCE C 250 SOC 150 1000 1250 1500 1750 2000 2250 2500 2750 IN FEET 10000 8.4 6.7 4.5 2.6 1.1 0.2 8000 7.5 6.3 4.7 2.4 0.9 6000 7.4 5.9 3.5 2.2 0.9 4000 6.0 4.7 1.1 1.7 0.7 3000 5.1 4.0 2.6 1.4 0.5 2000 4.4 3.4 2.2 1.1 0.4 1000 2.P 2.1 1.3 0.6 600 2.1 1.6 1.0 0.4 600 1.5 1.2 0.6 400 1.0 0.6 300 0.8 ^..5 700 150 Inn 80 60 50 40 30 20 In IEl' SOIL LOSS FROM NINO !ROSIER IN TENS PER ACRE PEP YEAR JANUARV.Ly100 I • 12 SURFACE - • A.5 ILL (vise - FLAT SNAIL GRAIN RESIDUE IN PCUFOS PER ACRE UNSHELTERED DISTANCE 0 250 500 750 1000 1250 1500 175C 2000 2250 2500 2750 3000 IL FEET 10000 6.C 4.8 3.1 1.1 0.7 8000 5.2 4.1 2.6 1.4 0.5 6000 4.5 3.P 2.4 1.3 0.5 4000 4.2 3.3 2.1 1.1 0.4 3000 3.8 2.9 1.6 0.9 2000 3.1 2.4 1.5 0.7 1000 I.! 1.4 C.! 800 1.6 1.2 C.6 600 1.1 0.8 0.4 400 0.7 0.4 300 0.5 C.1 200 150 100 PO 60 50 40 30 20 10 • NOTE: 4501OSS EDP VALUE 'WERE tE0 IS ARE NCI SHONNS LESS TER THAN ETHER VALUES NOT SHCNN ARE INVALID 4• NOTE: VALUES SHCNN ARE FLAT SMALL GRAIN ECUIVALEAT. NCI 'V' -100- Hello