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Home My WebLink About20072703.tiff U. S. DEPARTMENT OF AGRICULTURE • SOIL CONSERVATION SERVICE • • R.66 W. I R.65 . 2≥d0000 FEFr. e air( til .� Vin:2a. I69 70 v 7117117 �� g + 69 jPe V s 63 ['f eSe]K y �y3 72 ��'114.69 •l Aij.69 k Y. L. 70 d 44 72 AK i3 z., ' 70 72 F 'r? ' .k 70 72 t5 $1 y'qf • .' 70 ry4p E • f - 69 69 .,a 73 .aa SA .► :r. 73 72 12 - ''''•4yti 7 72 a2 3 70 V. 447 73 1 , - m • 7p :'y m . 70 72 72 ...- 72 49 70 69 c 69 72 70 70 y ;;e.. 70 �J II, / 73 , 72 0 69 72 c } 31 72 "` ._70 69 I. ". 69 70 47 73 7z 69 4 • 13 p 14 18 'd41* 72 ' zyT 70 '469 'v ,t .. }? - �./ 70 70 2 35 a• ''35 .a 60 '-.11' k.: q"" .� 70 ,�. 'gzx �� i '. 72 V A 4 +'ti X -t. '• w N73 73 ;le'NI .669,. 73 69 CO 0 »" 73 ' ice 1' 72 AO 0 • D COUNTY, COLORADO, SOUTHERN PART 45 range condition deteriorates, the sand bluestem, The potential vegetation is dominated by sand switchgrass, sand reedgrass, sideoats grama, and little bluestem, sand reedgrass, switchgrass, sideoats grama, ilistem decrease, forage production drops, and sand needleandthread, little bluestem, and blue grama. Poten- increases. Undesirable weeds and annuals invade tial production ranges from 2,50O pounds per acre in a "blowout" conditions can occur as range condition favorable years to 1,800 pounds in unfavorable years. As becomes poorer. range condition deteriorates, the sand bluestem, Management of vegetation on this soil should be based switchgrass, sand reedgrass, sideoats grama, and little on taking half and leaving half of the total annual produc- bluestem decrease, forage production drops, and sand tion. Seeding is desirable if the range is in poor condition. sage increases. Undesirable weeds and annuals invade Sand bluestem, sand reedgrass, indiangrass, switchgrass, and "blowout" conditions can occur as range condition sideoats grama, little bluestem, and blue grama are suita- becomes poorer. ble for seeding. Because this soil is susceptible to soil Management of vegetation on this soil should be based blowing, it should be seeded using an interseeder, or the on taking half and leaving half of the total annual produc- seed should be drilled into a firm, clean sorghum stubble. tion. Seeding is desirable if the range is in poor condition. Seeding early in spring has proven most successful. Brush Sand bluestem, sand reedgrass, indiangrass, switchgrass, management also can help in improving deteriorated side-oats grama, little bluestem, and blue grama are suita- range. ble for seeding. Because this soil is susceptible to soil Windbreaks and environmental plantings are fairly well blowing, it should be seeded using an interseeder or the suited to this soil. Blowing sand and the moderate availa- seed should be drilled into a firm, clean sorghum stubble. ble water capacity are the principal hazards in establish- Seeding early in spring has proven most successful. Brush ing trees and shrubs. The soil is so loose that treesfshould management can also help in improving deteriorated be planted in shallow furrows, maintaining vegetation range. between the rows. Supplemental irrigation is needed to Windbreaks and environmental plantings are generally insure survival. Trees that are best suited and have good not suited to this soil. Onsite investigation is needed to survival are Rocky Mountain juniper, eastern redcedar, determine if plantings are feasible. ponderosa pine, and Siberian elm. The shrubs best suited Wildlife is an important secondary use of this soil. Ran- are skunkbush sumac, lilac, and Siberian peashrub. geland wildlife, for example, the pronghorn antelope, can Wildlife is an important secondary use of this soil. The be attracted by developing livestock watering facilities, cropland areas provide favorable habitat for ring-necked managing livestock grazing, and reseeding where needed. pheasant and mourning dove. Many nongame species can This soil has fair potential for urban development. The b racted by establishing areas for nesting and escape chief limiting soil features are the rapid permeability and c8111F. For pheasants, undisturbed nesting cover is essen- the susceptibility to soil blowing. Septic tank absorption tial and should be included in plans for habitat develop- fields function properly, but in places the sandy sub- ment, especially in areas of intensive agriculture. Range- stratum does not properly filter the leachate. Sewage land wildlife, for example, the pronghorn antelope, can be lagoons must be sealed. Once established, lawns, shrubs, attracted by developing livestock watering facilities, and trees grow well. Capability subclass VIe irrigated, managing livestock grazing, and reseeding where needed. VIe nonirrigated; Deep Sand range site.This soil has fair potential for urban development. The 71—Valent-Loup complex, 0 to 9 percent slopes. This primary limiting soil features are the rapid permeability level to moderately sloping map unit occupies hills, ridges, and the susceptibility to soil blowing. Septic tank absorp- and depression or pothole-like areas in the sandhills at Lion fields function properly, but in places the sandy sub- elevations of 4,670 to 4,700 feet. The Valent soil makes up stratum does not properly filter the leachate. Sewage about 60 percent of the unit, the Loup soil about 35 per- lagoons must be sealed. Once established, the lawns, cent. About 5 percent is dune sand. The Valent soil occu- shrubs, and trees grow well. Capability subclass IVe ir- pies the hills and ridges and the Loup soil the depressions rigated, VIe nonirrigated; Deep Sand range site. or potholes. 70—Valent sand, 3 to 9 percent slopes. This is a deep, The Valent soil is deep and excessively drained. It excessively drained soil on plains at elevations of 4,650 to formed in eolian deposits. Typically the surface layer is 5,100 feet. It formed in eolian deposits. Included in brown sand about 8 inches thick. The underlying material mapping are small areas of soils that have lime within a to a depth of 60 inches is brown sand. depth of 40 inches. Also included are small areas of soils Permeability is rapid. Available water capacity is that have sandstone between 40 and 60 inches. moderate. The effective rooting depth is 60 inches or Typically the surface layer of the Valent soil is brown more. Surface runoff is slow, and the erosion hazard is sand about 6 inches thick. The underlying material to a low. depth of 60 inches is brown sand. The Loup soil is deep and poorly drained. It formed in Permeability is rapid. Available water capacity is sandy alluvium. Typically the surface layer is very dark moderate. The effective rooting depth is 60 inches or grayish brown, mottled loamy sand about 16 inches thick. more. Surface runoff is slow, and the erosion hazard is The underlying material to a depth of 60 inches is light low brownish gray, mottled loamy sand and sandy loam. • IP 46 SOIL SURVEY ,,il, Permeability is rapid. Available water capacity is yellowish brown fine sandy loam about 16 inches th moderate. A water table is at or near the surface in The substratum to a depth of 60 inches is sandy loam. spring and about 36 inches below the surface in fall. Sur- Permeability is moderately rapid. Available. face runoff is slow, and the erosion hazard is low. capacity is moderate. The effective rooting dept This unit is used for rangeland and wildlife habitat. The inches or more. Surface runoff is slow, and the era potential native vegetation on the Valent soil is hazard is low. dominated by sand reedgrass, sand bluestem, blue and In irrigated areas this soil is suited to the crops c hairy grama, little bluestem, needleandthread, and monly grown in the area. Perennial grasses and alfalf 50 percen ranges from 1,800 closegrown crops should be grown at least sideoats grama. Potential production p ditches and corrugations can be use the time. Contour pounds per acre in favorable years to 1,400 pounds in un- g irrigatingclose grown crops andpasture. Furrows, favorable years. As range condition deteriorates, the sand P I bluestem, sand reedgrass, sideoats grama, and little tour furrows, and cross slope furrows are suitable for is also desirabl e. Keeping irrigation P g bluestem decrease; sandhi)) muhly and blowout grass in- crops. Sprinkler g crease, and pr oduction forage drops. "Blowouts" occur as lage to a minimum and utilizing crop residue help to range condition becomes poorer. trol erosion. Maintaining fertility is important. Ci The native vegetation on the Loup soil is dominated by respond to applications of phosphorus and nitrogen. switchgrass, little bluestem, sand reedgrass, and western In nonirrigated areas this soil is suited to winter mil] r hum. Most of the acreage is lantec sand bluestem, prairie cordgrass, barley, and so g P wheatgrass. Indiangrass, gr X g winter wheat. The predicted yield is 20 bus alkali sacaton, saltgrass, sedge, andaverage i slender wheatgrass, gr g , gr yi rush are also present. Potential production ranges from per acre. The soil is summer fallowed in alternate g r i itat io Generally precipitatio w moisture accumulation.n toa oP P ou pounds 4,000 pounds per acre in favorable years to 3,000 p i�II��I' of fertilizer. in unfavorable years. As range condition deteriorates, the too low for beneficial use II' switchgrass, sand bluestem, indiangrass, little bluestem, Stubble mulch farming, striperopping, and minimum ii II and prairie cordgrass decrease, and saltgrass, blue grama, lage are needed to control soil blowing and water ern: sand dropseed, sedge, and rush increase. Undesirable Terracing also may be needed to control water erosion weeds and annuals invade the site as range condition The potential native vegetation on this range sit n bluestem, sand reedgrass, and 1 by sand dominated , becomes oorer. gt' poorer. s sideoats grama. Needleandt hread, switchgrass, gra 1 if the range isgI' ,is advisable Seeding with an interseeder g n Pote& and western wheatg rass are also prominent.ss sand bluestem, sideoats P in poor condition. Sand reedgrass, gT ,I,I grama, switchgrass, little bluestem, indiangrass, and blue production ranges from 2,200 pounds per acre in grama are suitable for seeding. Seeding early in spring ble years to 1,800 pounds in unfavorable years. A has proven most successful. Grazing should be light to condition deteriorates, the sand bluestem, sand reegi decrease and blue grama, sand dro s! prevent range deterioration. and switchgrassP Wildlife is an important secondary use of this unit. On and sand sage increase. Annual weeds and grasses ins Hill the Valent soil, rangeland wildlife, for example, the the site as range condition becomes poorer. ii id pronghorn antelope, can be attracted by developing Management of vegetation on this soil should be lx- livestock watering facilities, managing livestock grazing, on taking half and leaving half of the total annual pro' li ii, and reseeding where needed. tion. Seeding is desirable if the range is in poor condit sand reedgrass, switchgrass, ss side Sand bluestem, L u soil which is t typically wet and produces angr gr , The o P YP Y abundance of wetland vegetation, attracts wetland wil- grama, blue grama, pubescent wheatgrass, and ere: I'll III' wheatgrass are suitable for seeding. The grass sele, dlife species, such as mallard, teal, geese, and miscellane- g ous shorebirds. Primary management of this soil for wet- should meet the seasonal requirements of livestock II II 1 land wildlife includes managing livestock grazing, fencing should be drilled into a clean, firm sorghum stubble i lll!li'li to control livestock, protecting from fire, and preventing prepared seedbed. Seeding early in spring has pro drainage. Natural wetland vegetation should be allowed most successful. to develop. Capability subclass VIe irrigated, VIe nonir- Windbreaks and environmental plantings are fairly • rigated; Valent soil in Choppy Sand Meadow range site, suited to this soil. Blowing sand and low available w: Loup soil in Sandy Meadow range site. capacity are the principal hazards in establishing ti m sand, 0 to 3percent sloes.. This is a and shrubs. The soil is so loose that trees should 72—Vona loamy slopes.ii ill' somewhat excessively drained soil onplains and planted in shallow furrows and vegetation maintai deep, g P, high terraces at elevations of 4,600 to 5,200 feet. It between the rows. Supplemental irrigation is need& formed in eolian or alluvial deposits. Included in mapping insure survival. Trees that are best suited and have g are some leveled areas. Also included are small areas of survival are Rocky Mountain juniper, eastern redce soils that have a loamy substratum and some areas of ponderosa pine, and Siberian elm. The shrubs best su soils that are noncalcareous to a depth of 60 inches. are skunkbush sumac, lilac, and Siberian peashrub. ID IIII Typically the surface layer of this Vona soil is grayish Wildlife is an important secondary use of this soil. ' brown. The upper 6 inches is loamy sand and the lower 6 cropland areas provide favorable habitat for ring- c and mourning dove. Many non game s e inches is fine sandy loam. The subsoil is brown and lightpheasant u g p g g ill1 III ' II,III.I WELD COUNTY, COLORADO, SOUTHERN PART 47 be attracted by establishing areas for nesting and escape wheatgrass are suitable for seeding. The grass selected covor pheasants, undisturbed nesting cover is essen- should meet the seasonal requirements of livestock. It can tial should be included in plans for habitat develop- be seeded into a clean, firm sorghum stubble, or it can be ment, especially in areas of intensive agriculture. Range- drilled into a firm prepared seedbed. Seeding early in land wildlife, for example, the pronghorn antelope, can be spring has proven most successful. attracted by developing livestock watering facilities, Windbreaks and environmental plantings are fairly well managing livestock grazing, and reseeding where needed. suited to this soil. Blowing sand and low available water This soil has good potential for urban and recreational capacity are the principal hazards in establishing trees development. Once established, the lawns, shrubs, and and shrubs. The soil is so loose that trees should be trees grow well. The chief limiting soil feature is the planted in shallow furrows and vegetation maintained rapid permeability in the substratum, which causes a between the rows. Supplemental irrigation may be needed hazard of ground water contamination from sewage to insure survival. Trees that are best suited and have lagoons. In places recreational development is limited by good survival are Rocky Mountain juniper, western the susceptibility to soil blowing. Capability subclass IIIe redcedar, ponderosa pine, and Siberian elm. The shrubs irrigated, IVe nonirrigated; Sandy Plains range site. best suited are skunkbush sumac, lilac, and Siberian 73—Vona loamy sand, 3 to 5 percent slopes. This is a peashrub. Wildlife is an important secondary use of this soil. The deep, somewhat excessively drained soil on plains and high terraces at elevations of 4,600 to 5,200 feet. It cropland areas provide favorable habitat for ring-necked formed in eolian or alluvial deposits. Included in mapping pheasant and mourning dove. Many nongame species can are some leveled areas. Also included are small areas of be attracted by establishing areas for nesting and escape cover. For pheasants, undisturbed nesting cover is essen- soils that have a loamy substratum and some areas of tial and should be included in plans for habitat develop- soils that are noncalcareous to a depth of 60 inches. ment, especially in areas of intensive agriculture. Range- Typically the surface layer of this Vona soil is grayish land wildlife, for example, the pronghorn antelope, can be brown. The upper 6 inches is loamy sand and the lower 5 inches is fine sandy loam. The subsoil is brown and light attracted by developing livestock watering facilities, managing livestock grazing, and reseeding where needed. yellowish brown fine sandy loam about 14 inches thick. This soil has good potential for urban and recreational The substratum to a depth of 60 inches is sandy loam. Permeability is moderately rapid. Available water development. Once established, the lawns, shrubs, and caps . is moderate. The effective rooting depth is 60 trees grow well. The primary limiting soil feature is the rapid permeability in the substratum, which causes a inc more. Surface runoff is slow, and the erosion hazard of ground water contamination from sewage hazard is low. lagoons. In places recreational development is limited by This soil is suited to limited cropping. Intensive the susceptibility to soil blowing. Capability subclass IVe cropping is hazardous because of soil blowing. The irrigated, VIe nonirrigated; Sandy Plains range site. cropping system should be limited to such close grown 74—Vona loamy sand, 5 to 9 percent slopes. This is a crops as alfalfa, wheat, and barley. The soil is also suited deep, somewhat excessively drained soil on plains at to irrigated pasture. A suitable cropping system is 3 to 4 elevations of 4,600 to 5,200 feet. It formed in eolian years of alfalfa followed by 2 years of corn and small deposits. Included in mapping are small areas of soils that grain and alfalfa seeded with a nurse crop. have a loamy substratum and areas of soils that are non- Closely spaced contour ditches or sprinklers can be calcareous to a depth of 60 inches. used in irrigating close grown crops. Contour furrows or Typically the surface layer is grayish brown. The upper spinklers should be used for new crops. Application of 6 inches is loamy sand and the lower 4 inches is fine barnyard manure and commercial fertilizer helps to main- sandy loam. The subsoil is brown and light yellowish lain good production. brown fine sandy loam about 12 inches thick. The sub- The potential native vegetation on this range site is stratum to a depth of 60 inches is loamy sand. dominated by sand bluestem, sand reedgrass, and blue Permeability is moderately rapid. Available water grama. Needleandthread, switchgrass, sideoats grama, capacity is moderate. The effective rooting depth is 60 and:.western wheatgrass are also prominent. Potential inches or more. Surface runoff is medium, and the erosion production ranges from 2,200 pounds per acre in favora- hazard is low. ble years to 1,800 pounds in unfavorable years. As range The potential native vegetation on this range site is condition deteriorates, the sand bluestem, sand reedgrass, dominated by sand bluestem, sand reedgrass, and blue and switchgrass decrease and blue grama, sand dropseed, grama. Needleandthread, switchgrass, sideoats grama, and sand sage increase. Annual weeds and grasses invade and western wheatgrass are also prominent. Potential the site as range condition becomes poorer. production ranges from 2,200 pounds per acre in favora- Management of vegetation on this soil should be based ble years to 1,800 pounds in unfavorable years. As range on taking half and leaving half of the total annual produc- condition deteriorates, the sand bluestem, sand reedgrass, lion..Seeding is desirable if the range is in poor condition. and switchgrass decrease and blue grama, sand dropseed, SanOiestem, sand reedgrass, switchgrass, sideoats and sand sage increase. Annual weeds and grasses invade gran lue grama, pubescent wheatgrass, and crested the site as range condition becomes poorer. Hello