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01/20/2005 14:08 97063597^ INTERMILL LAND SEW-. PAGE 01
22 Soil sunray
22—Cushman fine sandy loam, 9 to 9 percent Included in this unit are small areas of Ilaverson loam.
slopes. This moderately dee well drained soil is on Nunn clay loam, and Nunn loam.
moderately dissected to hi dissected plains. It Permeability of this Dacono soil is moderately slow.
formed in calcareous loo residuum derived from Available water capacity is moderate. Effective rooting
interbedded sandstone d shale. depth is 60 inches or more. Runoff is medium, and the
Typically, the turfa layer is brown fine sandy loam 6 hazard of water erosion is slight to moderate. The
inches thick. The u er 4 inches of the subsoil is fine hazard of soil blowing is slight.
sandy loam, and lower 11 inches is clay loam. The This unit is used as nonwrigated cropland and
substratum is areous clay loam 8 inches thick. rangeland. Winter wheat is the main crop.
Interbedded, Icareous sandstone and shale are at a This unit is well suited to winter wheat, barley, oats,
depth of 2 ekes. Depth to sandstone and shale and sorghum. The tine texture of the surface layer limits
ranges 20 to 40 inches. the crops that can be grown on this unit. Because
I in this unit are small areas of M' ay clay precipitation is not sufficient for annual cropping, a
loam enohill fine sandy loam, and Shingle clay loam. cropping system that includes small grain and summer
Al included are some areas of Rock outcrop. fallow is most suitable. Precipitation usually is too low for
ility of this Cushman soil ieinoderate. crops on this unit to make efficient use of fertilizer,
vaiable water capacity is moderates. Effective rooting Maintaining crop residue on or near the surface
depth is 20 to 40 inches. Runoff„is medium, and the reduces runoff, reduces soil blowing, and helps to
hazard of water erosion is moderate to high. The hazard maintain soil filth and organic matter content. Stubble-
of soil blowing is slight. mulch farming.strperapping, and minimum tillage help to
This unit is used as ranrtggesIand. control erosion and conserve moisture. Terraces reduce
The potential plant cgirimunity on this unit is mainly runoff and the risk of erosion and help to conserve
blue grama,western wheatgrass, sedges,and moisture.
buffs ass. The aydrage annual production of air-dry
ge�fi The potential plant community on this unit is mainly
vegetation ran om 400 to 1.300 pounds. blue grams. western wheatgrass, fourwing saltbush, and
If the range' grazed, the proportion of preferred but falograss. Tile average annual
forage plant eases and the proportion of lessproduction0pordis of air-dry
vegetation ranges from 400 to 1,300 pounds.
preferred f age plants increases. Therefore. livestock If the range is overgrazed, the proportion of preferred
grazing be managed so that the desired balance forage plants decreases and the proportion of less
of pr ed species is maintained in the plant
ty preferred forage plants increases. Therefore, livestock
ange seeding is suitable if the range is in r grazing should be managed so that the desired balance
of preferred species is maintained in the plant
condition. The plants selected for seeding sh meet cey
the seasonal requirements of livestock or ' life, or Range sewing is suitable if the poor
both. Other management practices that a suitable for n0range is In
use on this unit are proper range use' erred grazing, condition.The plants selected for seeding should meet
and rotation grazing. If the plant cover is disturbed, the seasonal requirements of livestock or wildlife, or
protection from erosion is netted. Loss of the surface both. Other management practices that are suitable for
layer results in a severe decre tse in productivity and in use on this unit are proper range use, deferred grazing,
the potential of the soil to produce plants suitable for and rotation grazing. It the plant cover is disturbed.
grazing. protection from erosion is needed. Loss of the surface
This unit is well suit to windbreaks and layer results in a severe decrease in productivity and in
environmental plant' . The main limitations are the the potential of the soil to produce plants suitable for
moderate avail water capacity and restricted rooting grazing.
depth. S I irrigation may be needed when This unit is well suited to windbreaks and
planting a sing dry periods. environmental plantings. Supplemental irrigation may be
This map unit is in capability subclass Vie, needed when planting and during dry periods.
nonirrigated, and in Loamy Plains range site. This map unit is in capability subclass lye,
augur -Dacono clay loam,0 to 6 norurrgated, and m Clayey Plants range site.
percent slopes. This
deep,well drained soil is on plains and adjacent stream 24—Eckley dy clay loan, 0 to e4rcent slopes.
terraces. It formed in calcareous loamy alluvium. This deep. I drained soil is on smo to moderately
Typically, the surface layer is dark grayish brown clay dissected ains and on shoulders of ' land ridges. It
loam 4 inches thick. The upper 3 inches of the subsoil is formed' gravelly alluvium.
clay loam, and the lower 8 inches is clay. The upper part Typ' Ily, the surface layer is dark grayish brown
of the substratum is calcareous clay loam 6 inches thick, sandy clay loam 9 inches thick/The subsoil is clay
and the lower part to a depth of 60 inches or more is topti and gravelly sandy clay m 6 inches think. he
sandy day loam over calcareous very gravelly loamy substratum to a depth of 60 nches or more is gravelly
sand and sand. sand. In some areas the ace layer is sandy loam.
108 Sal survey
TABLE i.--BUILDING SITE DEVELOPMENT--Continued
Soil name and Shallow Dwellings Dwellings Small Local roads
sap symbol excavations without with commercial and streets
basements basements buildings
30 Slight-------- Moderate: Slight--------- Moderate: Severe:
Keith shrink-swell. shrink-swell. low strength.
314:
Kis Slight--------- Moderate: Moderate: Moderate: Moderate:
shrink-swell. shrink-swell. shrink-swell. shrink-swell.
Mitchell Slight Slight Slight Slight----------- Slight.
324:
Kim---------- Slight--------- Moderate: Moderate: Moderate: Moderate:
shrink-swell. shrink-swell. shrink-swell, shrink-swell.
elope.
Mitchell------- Slight------ Slight--------- Slight Moderate: Slight.
slope.
334:
Kim----------- Moderate: Moderate: Moderate: Severe: Moderate:
slope. shrink-swell, slope, slope. slope,
slope. shrink-swell. shrink-swell.
Shingle--------- Severe: Severe: Severe: Severe: Severe:
depth to rock, slope• depth to rock, slope. slope.
slope. slope.
34---------- Severe: Slight -- Slight Slight Moderate:
Manter cutbanks cave. frost action.
35------------- Severe: Slight Slight Moderate: Moderate:
Manter cutbanks cave. slope. frost action.
36----------- Moderate: Severe: Severe: Severe: Severe:
Mansanola too clayey. shrink-swell. shrink-swell. shrink-swell. low strength,
shrink-swell.
37 Severe: Severe: Severe: Severe:
Midway depth to rock. shrink-swell. depth to rock. shrink-swell. low strength,
slope,
shrink-swell.
38 Slight Moderate: Moderate: Moderate: Moderate:
Duels shrink-swell. shrink-swell. shrink-swell. frost action,
shrink-swell.
39 Slight Moderate: Moderate: Moderate: Moderate:
Nuclei shrink-swell. shrink-swell. shrink-swell, frost action,
slope. shrink-swell.
40, 01--------- Moderate: Severe: Severe: Severe: Severe:
Nunn too clayey. shrink-swell. shrink-swell. shrink-swell. low strength,
shrink-swell.
12-------------- Severe: Slight- Slight- Slight Slight.
Olney cutbanks cave.
*3 --- Severe: Slight---------- Slight Moderate: Slight.
Olney cutbanks cave. slope.
4s Severe: Slight-------- Slight Slight---------- Slight.
Olney cutbanke cave.
N5— Severe: Slight Slight Moderate: Slight.
Olney cutbanks cave. slope.
*6— Slight Slight Slight Slight----------- Slight.
Otero
See footnote at end of table.
Weld County.Colorado.Northern Part 113
TABLE 5.--SANITARY FACILITIES--Continued
Soil name and Septic tank Sewage lagoon Trench Area Daily cover
map symbol absorption areas sanitary sanitary for landfill
fields landfill landfill
114.
Badland
12 Severe: Severe: Severe: Severe: Poor:
Bankard flooding, seepage, flooding, flooding. seepage,
poor filter. flooding. too sandy. too sandy.
13 Severe: Seven: Severe: Severe: Poor:
Blakeland poor filter. seepage. seepage, seepage. too sandy.
too sandy.
16 -- Severe: Severe: Severe: Severe: Poor:
Blakeland poor filter. seepage, seepage, seepage. too sandy.
slope. too sandy.
15, 16------------ Severe: Severe: Severe: : Poor:
Bresser poor filter. seepage. seepage. seepage. small stones.
17, 18------------- Slight-------- Severe: Severe: Severe: Good.
Bushman seepage. seepage. seepage.
19e:
Bushman-------- Slight Severe: Severe: Severe: Good.
seepage. seepage. seepage.
Curabith---------- Severe: Severe: Severe: Severe: Poor:
poor filter. seepage, seepage. seepage. small stones.
slope.
Canyon-____------- Severe: Severe: Severe: Severe: Poor:
depth to rock. depth to rock. depth to rock. depth to rook. area reclaim,
small stones.
20 Severe: Severe: Severe: Moderate: Poor:
Cascajo poor filter. seepage, too sandy. slope. seepage,
�,.,- slope. too sandy,
small stones.
21 Severe: Severe: Severe: Severe: Poor:
Cushman depth to rock. depth to rock. depth to rock. depth to rock. area reclaim.
22___—____--- Severe: Severe: Severe: Severe: Poor:
Cushman depth to rock. depth to rock, depth to rock. depth to rock. area reclaim.
slope.
23 ----- Severe: Severe: Severe: Severe: Poor:
Dacono poor filter. seepage. seepage, seepage. seepage,
too e
too sandy. small stones.
24 -------- Severe: Severe: Severe: Severe: Poor:
Eckley poor filter. seepage. e seepage, seepage. seepage,
too sandy,
small stones.
Severe: Severe: Severe: Poor:
Eckley poor filter. seepage, seepage, seepage. seepage,
slope. too sandy. too sandy,
small stones.
264:
Eckley Severe: Severe: Severe: Severe: Poor:
poor filter. seepage, seepage, seepage. seepage,
slope. too sandy. too sandy,
small stones.
See footnote at end of table.
i—.
•
Weld County,Colorado,Northern Part 115
TABLE 5.--SANITARY PACILITIES--Continued
Soil name and Septic tank Sewage lagoon Trench Area Daily cover
map symbol absorption sanitary sanitary for landfill
fields landfill landfill
40, 41----------- Severe: Moderate: Severe: Slight Poor:
Nunn percs slowly. elope. seepage, too clayey,
too clayey. hard to pack.
42, 43, 44--------- Slight Severe: Moderate: Slight---------- Fair:
Olney seepage. too sandy. too sandy.
45— Slight Severe: Moderate: Slight Pair:
Olney seepage, too sandy. too sandy.
slope.
46, 47---------- Slight Severe: Slight Slight--------- Pair:
Otero seepage. small stones.
48s:
Otero Severe: Severe: Severe: Severe: Poor:
slope. seepage, elope. slope. slope.
slope.
Tassel Severe: Severe: Severe: Severe: Poor:
depth to rock, seepage, depth to rock, depth to rock, area reclaim,
slope. depth to rock, slope. slope. slope.
slope.
49 Severe: Severe: Severe: Severe: Good.
Paoli poor filter. seepage. seepage. seepage.
50-- Severe: Severe: Severe: Severe: Good.
Paoli poor filter. seepage, seepage. seepage.
slope.
51 Severe: Severe: Severe: Severe: Poor:
Peet: poor filter. seepage, seepage, seepage. seepage,
slope. too sandy. too sandy,
small atones.
520:
Peetz Severe: Severe: Severe: Severe: Poor:
poor filter. seepage, seepage, seepage. seepage,
slope. too sandy. too sandy,
small stones.
Altvan Severe: Severe: Severe: Severe: Poor:
poor filter. seepage, seepage, seepage. seepage,
slope. too sandy. too sandy.
53s:
Peetz Severe: Severe: Severe: Severe: Poor:
poor filter, seepage, seepage, seepage, seepage,
slope. elope. slope, slope. too sandy,
too sandy. small stones.
Rock outcrop.
5►------------- Severe: Severe: Severe: Severe: Pair:
Platner percs slowly. seepage. seepage. seepage. small stones.
55 Severe: Severe: Severe: Severe: Poor:
Renohill depth to rock, depth to rock. depth to rock. depth to rock. area reclaim.
peres slowly.
56 Severe: Severe: Severe: Severe: Poor:
Renohill depth to rock, depth to rock, depth to rock. depth to rock. area reclaim.
peres slowly. slope.
57s:
Renohill Severe: Severe: Severe: Severe: Poor:
depth to rock, depth to rock. depth to rock. depth to rock. area reclaim.
peres slowly.
See footnote at end of table.
I
Weld County,Colorado,Northern Part 129
TABLE 8.--ENGINEERING INDEX PROPERTIES--Continued
^ Classification Prag- Percentage passing
Soil name and Depth USDA texture manta sieve number— Liquid Plas-
map symbol Unified AASBTO > 3 I limit ticity
inches 4 f 10 40 200 index
In Pct Pat
17 0-10 Pine sandy loam SM, ML A-4 0 80-100 75-100 65-85 35-55 20-25 NP-5
Bushman 10-60 Very fine sandy ML. SM A-4 0 80-100 75-100 70-85 40-55 20-25 NP-5
loam, loam,
sandy loam.
18— 0-6 Pine sandy loam SM, ML A-4 0 80-100 75-100 65-85 35-55 20-25 NP-5
Bushman 6-60 Very fine sandy ML, Sit A-4 0 80-100 75-100 70-85 40-55 20-25 NP-5
loam, loam,
sandy loam.
1941:
Bushman 0-6 Fine sandy loam SM, ML A-4 0 80-100 75-100 65-85 35-55 20-25 NP-5
6-60 Very fine sandy ML, SM A-4 0 80-100 75-100 70-85 40-55 20-25 NP-5
loam, loam,
sandy loam.
Curabith----- 0-10 Loam SM, SM-SC, A-4 0 95-100 90-100 65-85 35-55 25-35 5-10
ML, CL-ML
10-25 Very channery ON, GM-GC, A-1, A-2 10-20 40-60 35-55 25-35 10-20 20-30 NP-10
sandy loam. SM, S14-SC
25-42 Channery sandy SM A-1, A-2 5-10 60-80 55-75 35-65 15-35 20-30 NP-10
loam.
42-60 Very channery GP-GM A-1 45-55 30-50 25-45 15-25 5-10 -- NP
loamy sand.
Canyon-------- 0-3 Gravelly loam GM, SM A-4 0-5 60-80 50-75 45-60 35-50 -- NP
3-14 Very fine sandy ML, SM, A-4 0-5 60-95 50-95 45-95 35-75 15-20 NP-10
loam, loam, SC, GM
gravelly loam.
14 Weathered bedrock -- --- --- -- -- --- --- --- ---
20- 0-3 Gravelly sandy GM, SM A-1, A-2, 0-10 50-75 50-75 30-50 10-40 -- NP
Casca0o loam. A-4
3-24 Very gravelly GP-GM, OP, A-1 0-15 15-50 15-50 5-30 0-20 -- NP
sandy loam, very ON
gravelly loamy
sand, very
gravelly sand.
24-60 Very gravelly GP, SP, A-1 0-15 10-60 10-60 5-30 0-10 -- NP
loamy sand, very OP-GM,
gravelly sand, SP-SM
gravelly sand.
21, 22 0-10 Pine sandy loam SM-SC A-2, A-4 0 100 75-100 70-90 25-50 20-25 5-10
Cushman 10-29 Clay loam, sandy CL A-6 0 100 90-100 85-95 70-85 25-35 10-15
clay loam, loam.
29 Weathered bedrock -- -- --- --- --- --- --- --- --
23 --- 0-4 Clay loam------- CL A-6 0 85-100 75-100 75-95 70-80 30-40 10-20
Dacono 4-21 Clay loam, clay, CL A-6, A-7 0 75-100 60-100 55-95 50-85 35-45 15-25
gravelly clay
loam.
21-26 Sandy clay loam CL, SC A-6 0 75-100 75-100 50-95 40-85 25-40 10-20
loam, silt loam,.
26-60 Sand, gravelly SP A-1 0 50-90 50-90 20-45 0-5 --- NP
sand.
24------------ 0-9 Sandy clay loam SC, CL, A-6, A-4 0 95-100 95-100 75-90 35-55 25-35 5-15
Eckley CL-ML,
SM-SC
9-15 Gravelly sandy SC, GC, CL A-2, A-6 0 55-85 50-85 30-65 20-55 25-40 10-20
clay loam, sandy
clay loam, clay
loam.
15-60 Gravelly sand, SM, SP-SM, A-1 0 50-85 30-75 15-45 5-15 -- NP
gravelly loamy GP-OM, GM
sand, very
gravelly sand.
See footnote at and of table.
.Weld County,Colorado, Northern Part 131
TABLE 8.--ENGINEERING INDEX PROPERTIES--Continued
Classification Prag- Percentage passing
Soil name and Depth USDA texture manta sieve number-- Liquid Plan-
map symbol Unified AASHTO > 3 limit ticity
inches 4 10 40 200 index
In Pct Pct
314 324:
Eim----------- 0-3 Lom----------- ML A-4 0-5 80-100 75-100 60-90 55-75 20-35 NP-5
3-60 Loam, clay loam, CL, CL-ML, A-4, A-6 0-5 80-100 75-100 70-95 35-85 25-40 5-15
very fine sandy SC, SM-SC
loam.
Mitchell — 0-7 Silt loam------- ML, CL-ML A-4 0 100 100 90-100 80-100 20-35 NP-10
7-60 Loam, very fine ML, CL-ML A-4 0 100 loo 85-100 65-100 20-35 NP-10
sandy loam, silt
loam.
334:
Elm----- 0-3 Loam--- ML A-4 0-5 80-100 75-100 60-90 55-75 20-35 NP-5
3-60 Loam, clay loam, CL, CL-ML, A-4, A-6 0-5 80-100 75-100 70-95 35-85 25-40 5-15
very fine sandy SC, SM-SC
loam.
Shingle 0-4 Clay loam- CL A-6 0-5 75-100 75-100 65-100 50-80 35-40 15-20
4-11 Clay loam, loam CL A-6 0 15-100 75-100 65-100 50-80 30-40 10-20
11 Unweathered --- --- --- --- -- --- --- --- ---
bedrock.
34, 35 0-3 Sandy loam------ SM, ML A-2, A-4 0 95-100 75-100 45-85 25-55 — HP
Kanter 3-28 Pine sandy loam, SM, ML, A-2, A-4 0 95-100 75-100 50-85 30-55 15-25 NP-5
sandy loam. CL-ML,
SM-SC
28-60 Sandy loam, loamy SM A-2, A-4, 0 95-100 75-100 40-85 15-50 -- NP
sand, loamy fine A-1
sand.
36 0-3 Clay loam------- CL, CL-ML A-4, A-6 0-5 95-100 80-95 70-95 50-T5 25-40 5-20
Manzanola 3-48 Clay loam, clay, CL A-6, A-7 0-5 95-100 90-100 85-95 65-90 35-50 20-30
silty clay.
48-60 Clay loam, silty CL A-6 0-5 95-100 90-100 80-95 60-90 30-40 10-20
clay loam.
37 0-3 Clay loam CL A-6 0 75-100 75-100 70-100 70-95 30-40 10-20
Midway 3-11 Clay, clay loam, CL, CH A-6, A-7 0 95-100 95-100 90-100 70-95 35-60 20-35
silty clay loam.
11 Weathered bedrock --- -- --- --- --- --- -- --- ---
38, 39--------- 0-4 Loam- ML, SM A-4 0-5 80-lou 75-100 60-90 45-70 20-30 NP-5
Kuala 4-60 Loam, clay loam CL-ML, CL A-4, A-6 0-5 80-100 75-100 65-95 50-75 20-35 5-15
40 0-7 Loam----------- CL, SC, A-6, A-4 0-5 95-100 80-95 70-95 45-75 20-40 5-20
Nunn SM-SC,
CL-ML
7-23 Clay loam, clay CL, CH A-6, A-7 0-5 95-100 90-100 85-95 65-75 35-60 20-35
23-60 Clay loam, loam, CL, CL-ML, A-4, A-6 0-5 80-100 60-100 60-90 35-75 15-40 5-20
gravelly sandy SM-SC, SC
clay loam.
41 0-8 Clay loam----- CL, SC, A-6, A-4 0-5 95-100 80-95 70-95 45-75 20-40 5-20
Nunn SM-SC,
CL-ML
8-22 Clay loam, clay CL, CH A-6, A-7 0-5 95-100 90-100 85-95 65-75 35-60 20-35
22-60 clay loam, loam, CL, CL-ML, A-4, A-6 0-5 80-100 60-100 60-90 35-75 15-40 5-20
gravelly sandy SM-SC, SC
clay loam.
42 0-5 Loamy sand------ SM A-2 0 95-100 90-100 60-90 10-20 — NP
Olney 5-34 Sandy clay loam, SC, CL A-6 0 95-100 90-100 80-100 40-55 25-35 10-20
sandy loam.
34-60 Sandy loam, sandy SC, SM-SC, A-4, A-6 0 95-100 95-100 75-95 35-55 20-35 5-15
clay loam, fine CL, CL-ML
sandy loam.
See footnote at and of table.
n
.-.Wald County.Colorado.Northern Pan 137
TABLE 9•--PHYSICAL AND CHEMICAL PROPERTIES OP SOILS--Continued
os on ind
Soil name and Depth Clay Moist Permet- Available Soil Salinity Shrink- factors erodi- Organic
map symbol bulk bility water reaction swell I bility matter
density capacity potential E T group
In Pot 0/em In/hr In/in all Mmhos/om 1 Mc_
14----------- — 0-12 3-8 -- 6.0-20 0.06-0.09 6.1-7.3 <2 Low----- 0.10 5 2 2-4
Blakeland 12-60 2-5 --- 6.0-20 0.05-0.08 6.6-7.8 <2 Low------- 0.10
15--------_ 0-15 8-20 — 0.6-6.0 0.11-0.13 6.1-7.3 <2 Low--- 0.17 5 3 2-4
Dresser 15-37 20-30 -- 0.6-2.0 0.15-0.18 6.1-7.8 <2 Moderate 0.20
37-60 3-10 --- 2.0-20 0.05-0.08 6.6-7.8 <2 Low---- 0.10
16-------------- 0-15 8-20 --- 0.6-6.0 0.11-0.13 6.1-7.3 <2 Low------- 0.17 5 3 2-4
Dresser 15-34 20-30 --- 0.6-2.0 0.15-0.18 6.1-7.8 <2 Moderate 0.20
34-60 3-10 -- 2.0-20 0.05-0.08 6.6-7.8 <2 Low---- 0.10
17 0-10 10-18 --- 2.0-6.0 0.13-0.15 7.4-8.4 <2 Low--- 0.10 5 3 1-2
Bushman 10-60 10-18 -- 2.0-6.0 0.15-0.17 7.4-8.4 <4 Low----- 0.10
18 0-6 10-18 --- 2.0-6.0 0.13-0.15 7.4-8.4 <2 Low------- 0.10 5 3 1-2
Bushman 6-60 10-18 --- 2.0-6.0 0.15-0.17 7.4-8.4 <4 Low----- 0.10
19•:
Bushman 0-6 io-18 — 2.0-6.0 0.13-0.15 7.4-8.4 <2 Low---- 0.10 5 3 1-2
6-60 10-18 — 2.0-6.0 0.15-0.17 7.4-8.4 <4 Low---- 0.10
Curabith 0-10 19-22 --- 0.6-2.0 0.13-0.19 7.4-8.4 <2 Low---- 0.20 3 6 <1
10-25 8-18 --- 2.0-6.0 0.05-0.09 7.9-9.0 <2 Low 0.15
25-42 10-20 --- 2.0-6.0 0.09-0.12 7.9-9.0 <2 Low 0.15
42-60 10-12 --- 6.0-20 0.02-0.06 7.9-9.0 <2 Low 0.10
Canyon 0-3 10-20 1.20-1.40 0.6-2.0 0.15-0.18 7.4-8.4 <2 Low---- 0.24 2 8 .5-1
3-14 10-25 1.30-1.50 0.6-2.0 0.13-0.18 7.4-8.4 <2 Low------ 0.43
14 --- --- — -- --- -- ------- ----
20------------- 0-3 5-15 --- 2.0-6.0 0.07-0.11 7.4-8.4 <2 Low 0.17 5 8 .5-1 8 Cascajo 24-60 0-5-24 5 --- 6.0 20 0 0.5-0.06 7.4-8.4 <2 Low 0.10
.4 <2 Low 0.10
21, 22 0-10 10-20 --- 2.0-6.0 0.13-0.15 6.6-7.8 <2 Low---- 0.37 2 5 >2
Cushman 10-29 25-35 — 0.6-2.0 0.14-0.18 6.6-8.4 <2 Moderate 0.32
29 --- -- -- --- -- -- ---------- ---
23— 0-4 27-40 -- 0.2-0.6 0.19-0.21 6.6-7.8 <2 Moderate 0.24 3 6 2-4
Dncono 4-21 35-60 -- 0.2-0.6 0.15-0.21 6.6-8.4 <2 High----- 0.24
21-26 15-35 -- 0.6-2.0 0.13-0.18 7.4-8.4 <2 Moderate 0.28
26-60 0-5 -- >20 0.05-0.07 7.4-8.4 <2 Low----- 0.17
24 0-9 20-25 --- 0.6-2.0 o.16-o.18 6.6-7.3 <2 Low------ 0.15 5 3 2-3 0.13-0.16 .3 ModerateEckley 9-15 15-60 20-35 0-5 -- 0>6.0.0 0.03-0.6 6.6-7.8 <2 Low---- 0.15
0.10
25 0-8 15-25 --- 0.6-2.0 0.16-0.18 6.6-7.3 <2 Low 0.15 5 3 2-3
Eckley 8-60 20-35 --- 0> 0 0.13-0.16
6 6.6-7.3 <2
<2 Low
Moderate 0.10
14-60 0-5 --
6.0
264:
Eckley 0-8 20-25 -- 0.6-2.0 0.16-0.18 6.6-7.3 <2 Low----- 0.15 5 3 2-3
8-14 20-35 -- 0.6-2.0 0.13-0.16 6.6-7.3 <2 Moderate 0.15
14-60 0-5 --- >6.0 0.03-0.06 6.6-7.8 <2 Low----- 0.10
Dix 0-12 7-18 1.50-1.70 0.6-6.0 0.13-0.22 6.1-1.8 <2 Low----- 0.17 2 3 1-2
12-37 2-10 1.70-1.90 6.0-20 0.04-0.06 6.6-7.8 <2 Low----- 0.10
37-60 0-3 1.70-2.00 >20 0.02-0.04 6.6-7.8 <2 Low 0.10
Blakeland 12-60 2-5 -- 6.0-20 0.05-0.08 — — 5 2 2-4
6.6 T.8 <2 Low 0.10
27_----------_ 0-3 10-20 1.20-1.40 0.6-2.0 0.21-0.23 6.6-8.4 <2 Low 0.43 2 4L .5-1
Epping 3-17 10-20 1.20_1.40 0.6-2.0 0.18-0.20 7.4_8.4 -<2 Low 0.43
284:
Raplaquolla.
See footnote at end of table.
'Weld County, Colorado, Northern Part 31
This map unit is in capability subclass Vle, 41—Nunn clay loam,0 to 6 percent slopes.This
nonirrigated, and in Loamy Plains range site. deep, well drained soil is on sf fly dissected plains and
stream terraces. It formed in sous loamy alluvium.
unn loam, 0 to 6 percent slopes.This deep, Typically, the surface layer' grayish brown clay loam
we drained soil is on slightly dissected plains and 8 inches thick. The subsoil i clay loam 14 inches thick.
stream terraces. It formed in calcareous loamy alluvium. The substratum to a depth f 60 inches or more is
Typically, the surface layer is grayish brown loam 7 calcareous clay loam. In me areas the surf a layer is
inches thick. The subsoil is clay loam 25 inches thick. loam.
The substratum to a depth of 60 inches or more is Included in this unit e small areas of fine sandy
calcareous clay loam. In some areas the surface layer is loam and Manzano lay loam.
clay loam. Permeability of Nunn soil is slow. vailable water
Included in this unit are small areas of Aver fine sandy capacity is high. ective rooting dep is 60 inches or
loam and Manzanola clay loam. more. Runoff i dium, and the h d of water erosion
Permeability of this Nunn soil is slow. Available water is slight to m erate. The hazard o soil blowing is slight.
capacity is high. Effective rooting depth is 60 inches or This unit ' used as rangeland and nonirrigated
more. Runoff is medium, and the hazard of water erosion cropland. inter wheat is the main crop.
is slight to moderate.The hazard of soil blowing is slight. The pot tial plant community on this unit is mainly
This unit is used as nonirrigated cropland and blue grams,western wheatgrass, green needlegrass, and
rangeland.Winter wheat is the main crop. buffalograss. The average annual production of air-dry
This unit is suited to winter wheat, barley,oats,and vegetation ranges from 400 to 1,200 pounds.
sorghum. Low annual precipitation is the main limitation. If the range is overgrazed, the proportion of preferred
Because precipitation is not sufficient for annual forage plants decreases and the proportion of less
cropping, a cropping system that includes small grain preferred forage plants increases. Therefore, livestock
and summer fallow is most suitable. Precipitation usually grazing should be managed so that the desired glance
is too low for crops on this unit to make efficient use of of preferred species is maintained in the plant
fertilizer. community.
Maintaining crop residue on or near the surface Range seeding is suitable if the range is ii poor
reduces runoff, reduces soil blowing, and helps to condition.,Yhe plants selected for seeding/Should meet
maintain soil filth and organic matter content. Stubble- the seaq nal requirements of livestock of wildlife, or
mulch farming, striperopping, and minimum tillage help to both. (� management practices that are suitable for
control erosion and conserve moisture. Terraces reduce use orf this m unit are proper range use, deferred grazing,
and rotation grazing. If the plant cover is disturbed,
runoff and the risk of erosion and help to conserve
moisture.
protection from erosion is n . Loss of the surface
layer results in a severe d ease in productivity and in
The potential plant community on this unit is mainly blue grams, western wheatgrass, sedges, and the potential of the soil produce plants suitable for
grazing'
buffalograss. The average annual production of air-dry
vegetation ranges from 500 to 1,500 pounds. This unit is well ed to winter wheat, barley, oat
If the range is overgrazed,the proportion of preferred and sorghum. T bee grown textnro of the surface layer its
Becau
forage plants decreases and the proportion of less the crops mat,�s not be on this unit oppi
preferred forage plants increases. Therefore, livestock cropping rtion.ra sufficient for annual croppi a
grazing should be managed so that the desired balance /stem that includes small grain a summer
9 n9fallow is ost suitable. Precipitation usu is too low for
of preferred species is maintained in the plant crops this unit to make efficient use f fertilizer.
community. M taining crop residue on or n e surface
Range seeding is suitable if the range is in poor red es runoff, reduces soil blowi , and helps to
condition. The plants selected for seeding should meet maintain soil tilth and organic er content. Stubble-
the seasonal requirements of livestock or wildlife, or mulch farming, striperopping, minimum tillage help to
both. Other management practices that are suitable for control erosion and conse moisture. Terraces reduce
use on this unit are proper range use, deferred grazing, runoff and the risk of er on and help to conserve
and rotation grazing. If the plant cover is disturbed, moisture.
protection from erosion is needed. Loss of the surface This unit is well s ed to windbreaks and
layer results in a severe decrease in productivity and in environmental pl 'ngs. Supplemental irrigation be
the potential of the soil to produce plants suitable for needed when planting and during dry periods.
grazing. This map unit is in capability subclass IVe
This unit is well suited to windbreaks and nonirrigated, and in Clayey Plains range sit .
environmental plantings. Supplemental irrigation may be
needed when planting and during dry periods. 42—Olney loamy sand,0 to 3 percent slopes. This
This map unit is in capability subclass IVe, deep,well drained soil is on smooth to slightly dissected
nonirrigated, and in Loamy Plains range site. plains. It formed in calcareous loamy alluvium.
Weld County,Colorado, Northern Part 107
TABLE 4.--BUILDING SITE DEVELOPMENT--Continued
Soil name and Shallow Dwellings Dwellings Small Local roads
map symbol excavations without with commercial and streets
basements basements buildings
13------- Severe: Slight------ Slight Slight Slight.
Blakeland cutbanke cave.
14— Severe: Moderate: Moderate: Severe: Moderate:
Blakeland cutbanks cave. elope. slope. slope. slope.
15 Severe: Slight Slight Slight Moderate:
Dresser cutbanks cave. frost action.
16 Severe: Slight Slight Moderate: Moderate:
Breeser cutbanke cave. elope. frost action.
17-------------- Slight Slight Slight Slight Slight.
Bushman
18— Slight Slight Slight Moderate: Slight.
Bushman slope.
190:
Bushman--------- Slight Slight Slight Moderate: Slight.
elope.
Curabith-- Severe: Moderate: Moderate: Severe: Moderate:
cutbanks cave. elope. elope. slope. elope.
Canyon- Severe: Moderate: Severe: Moderate: Moderate:
depth to rock. depth to rock. depth to rock. elope, depth to rock.
depth to rock.
20 Severe: Moderate: Moderate: Severe: Moderate:
Cascajo cutbanke cave. elope. elope. elope. slope.
21 Moderate: Slight Moderate: Slight------- Slight.
Cuahaan depth to rock. depth to rock.
22 Moderate: Slight Moderate: Moderate: Slight.
Cushman depth to rock. depth to rock. slope.
23 Severe: Slight Slight Slight — Slight.
Dacono cutbanke cave.
24 Severe: Slight Slight Slight Slight.
Eckley cutbanke cave.
25 Severe: Slight Slight Moderate: Slight.
Eckley cutbanks cave. slope.
260:
Eckley Severe: Moderate: Moderate: Severe: Moderate:
cutbanke cave. elope. elope. slope. elope.
Dix Severe: Moderate: Moderate: Severe: Moderate:
cutbanks cave. slope. slope. slope. slope.
Blakeland Severe: Moderate: Moderate: Severe: Moderate:
cutbanke cave. slope. elope. elope. elope.
27 Severe: Moderate: Severe: Moderate: Moderate:
Epping depth to rock. depth to rock. depth to rock. elope, depth to rock.
depth to rock.
280:
Haplaquolls.
Pluvaquents.
29 Severe: Severe: Severe: Severe: Moderate:
Haverson cutbanke cave. flooding. flooding. flooding. flooding.
See footnote at end of table.
I�
I
138 Soilauvey
TABLE 9.-PHYSICAL AND CHEMICAL PROPERTIES OF SOILS—Continued
I I I I I I I I I EroslonlWind I
Soil name and IDepthIClay I Moist I Permea- IAvailablel Soil ISalinityl Shrink- I factorslerodi-(Organic
map symbol I I I bulk I bility I water Ireactionl I swell I I Ibilityl matter
density ca cit otential K T rou
n et cm n r n CM cm et
280:
Fluvaquents.
29 0-12 10-27 -- 0.6-2.0 0.14-0.18 7.4-8.4 <8 Low 0.24 5 4L .5-2
Meyerson 12-60 18-35 -- 0.6-2.0 0.14-0.18 7.4-9.0 <8 Low 0.24
30 0-4 15-25 1.20-1.30 0.6-2.0 0.20-0.24 6.1-7.3 <2 Low------- 0.32 5 6 1-3
Keith 4-20 20-35 1.10-1.20 0.6-2.0 0.18-0.22 6.6-8.4 <2 Moderate 0.32
20-60 10-20 1.30-1.40 0.6-2.0 0.20-0.22 7.4-8.4 <2 Low 0.43
310, 320:
Kim— 0-3 15-27 -- 0.6-2.0 0.16-0.18 7.4-8.4 <2 Low 0.32 5 4L .5-1
3-60 18-35 --- 0.6-2.0 0.15-0.17 7.9-8.4 <8 Moderate 0.32
Mitchell 0-7 15-27 1.20-1.40 0.6-2.0 0.22-0.24 7.4-8.4 <2 Low 0.43 5 4L .5-1
7-60 8-18 1.20-1.40 0.6-2.0 0.17-0.22 7.4-8.4 <2 Low 0.43
330:
Kim- 0-3 15-27 -- 0.6-2.0 0.16-0.18 7.4-8.4 <2 Low 0.32 5 4L .5-1
3-60 18-35 --- 0.6-2.0 0.15-0.17 7.9-8.4 <8 Moderate 0.32
Shingle-------- 0-4 27-35 -- 0.6-2.0 0.19-0.21 7.4-9.0 <2 Moderate 0.32 2 4L <1
4-11 20-35 -- 0.6-2.0 0.16-0.21 7.4-9.0 <2 Moderate 0.49
11 —_ --- _— --- ---
34, 35------- 0-3 10-20 -- 2.0-6.0 0.12-0.16 6.6-7.8 <2 Low 0.15 5 3 2-4
Manter 3-28 9-18 -- 2.0-6.0 0.11-0.14 6.6-7.8 <2 Low 0.15
28-60 5-15 -- 2.0-6.0 0.08-0.14 7.9-8.4 <2 Low 0.15
36----------- 0-3 20-35 — 0.2-2.0 0.19-0.20 7.4-8.4 <4 Moderate 0.24 5 4L 1-2
Mantanola 3-48 35-45 -- 0.06-0.2 0.15-0.18 7.4-8.4 <2 High 0.28
48-60 30-40 -- 0.2-0.6 0.16-0.18 7.4-9.0 <8 Moderate 0.24
37 — 0-3 30-40 --- 0.2-0.6 0.14-0.18 6.6-8.4 2-4 Moderate 0.43 1 4L .5-2
Midway 3-11 35-45 --- 0.06-0.2 0.14-0.18 7.9-9.0 2-8 High----- 0.43
--- -- —_ ---
38, 39 0-4 15-25 --- 0.6-2.0 0.13-0.18 6.6-8.4 <2 Low 0.28 5 4L 1-2
Nucla 4-60 18-35 -- 0.6-2.0 0.16-0.18 7.4-8.4 <2 Moderate 0.32
40— — 0-7 15-25 --- 0.2-2.0 0.15-0.20 6.1-7.8 <2 Moderate 0.24 5 6 2-4
Nunn 7-23 35-45 --- 0.06-0.2 0.15-0.18 6.6-8.4 <2 High 0.28
23-60 25-40 --- 0.2-0.6 0.10-0.18 7.4-8.4 <2 Moderate 0.24
41 0-8 27-35 --- 0.2-2.0 0.15-0.20 6.1-7.8 <2 Moderate 0.24 5 6 2-4
Nunn 8-22 35-45 — 0.06-0.2 0.15-0.18 6.6-8.4 <2 High---- 0.28
22-60 25-40 --- 0.2-0.6 0.10-0.18 7.4-8.4 <2 Moderate 0.24
42 0-5 5-10 -- 6.0-20.0 0.06-0.10 6.6-7.8 <2 Low----- 0.15 5 2 .5-1
Olney 5-34 18-30 -- 0.6-2.0 0.13-0.15 6.6-7.8 <2 Moderate 0.24
34-60 15-30 -- 0.6-2.0 0.11-0.15 7.9-8.4 <2 :Low 0.24
43------------- 0-4 5-10 --- 6.0-20.0 0.06-0.10 6.6-7.8 <2 Low 0.15 5 2 .5-1
Olney 4-31 18-30 --- 0.6-2.0 0.13-0.15 6.6-7.8 <2 Moderate 0.24
31-60 15-30 -- 0.6-2.0 0.11-0.15 7.9-8.4 <2 Low 0.24
44, 45 0-6 10-20 -- 0.6-6.0 0.11-0.15 6.6-7.8 <2 Low 0.20 5 3 1-2
Olney 6-18 18-30 -- 0.6-2.0 0.13-0.15 6.6-7.8 <2 Low 0.24
18-60 15-30 --- 0.6-6.0 0.11-0.15 7.9-8.4 <2 Low 0.24
46, 47 0-5 10-20 --- 2.0-6.0 0.11-0.13 7.4-8.4 <2 Low 0.20 5 3 .5-2
Otero 5-60 5-18 -- 2.0-6.0 0.08-0.12 7.4-8.4 <4 Low 0.17
480:
Otero- 0-5 10-20 --- 2.0-6.0 0.11-0.13 7.4-8.4 <2 Low 0.20 5 3 .5-2
5-60 5-18 -- 2.0-6.0 0.08-0.12 7.4-8.4 <4 Low 0.17
See footnote at end of table.
L
INF ) ) )
A
ni
TABLE 10.--SOIL AND MATER FEATURES--Continued
Flooding Bedrock I Risk of corrosion
Soil name and Hydrologic I Potential
map symbol group Frequency Duration Months Depth Hardness I frost action Uncoated Concrete
steel
In
19•:
Bushman A None------- --- >60 --- Low --- Low.
Curabith------- A None -- -- >60 --- Low----------- Low Low.
Canyon D None------- --- --- 10-20 Soft Low High---- Low.
20 A None --- --- >60 -- Low Moderate Low. )
Casoajo
21, 22 C None --- --- 20-40 Soft Low High Low.
Cushman
23 C None --- --- >60 --- Low High Low.
Dacono
24, 25 B None- --- --- >60 --- Low Moderate Low.
Eekley
26e:
Wiley--- B None --- --- >60 --- Low Moderate Low.
Dix A None -- --- >60 --- Low----------- Low Low.
Blakeland A None --- --- >60 --- Low Low Low.
27 D None -- --- 10-20 Soft Low High Low.
Epping
28■:
Haplaquolls.
Pluvaquents. )
29 B Rare------- -- --- >60 --- Low High Low.
Haverson
30 B None -- --- >60 --- Moderate Moderate Low.
Keith
31•, 32•:
Kim- B None --- --- >60 --- Low High Low.
Mitchell B None --- --- >60 -- Low High----- Low.
33e:
Kim B None------- --- --- >60 -- Low High Low.
Shingle D None --- --- 10-20 Soft Low High Low.
I
See footnote at end of table.
a
TABLE 10.--SOIL AND WATER FEATURES--Continued
Flooding Bedrock Risk of corrosion
Soil name and Hydrologic Potential Ir
map symbol group Frequency Duration Months Depth Hardness frost action Uncoated Concrete
steel
In
34, 35 a None --- - >60 --- Moderate High Low.
Kanter
36 C None --- --- >60 --- Low — High Moderate.
Mansanola
37 D None --- -- 10-20 Soft Low High Low.
Midway
38, 39 B None --- --- >60 -- Moderate High Low.
Nuclei \
40, 41 C None------- -- --- >60 --- Moderate High Low. )
Nunn
42, 43r,44, 45---- B None --- -- >60 -- Low High Low.
Olney
46, 47 8 None --- -- >60 -- Low High Low.
Otero
484:
Otero B None --- --- >60 --- Low High Low.
Tassel D None- --- --- 10-20 Soft Low High Low.
49 8 None --- --- >60 --- Moderate High Low.
Paoli
50 B None to rare --- --- >60 --- Moderate High Low.
Paoli
51 A None --- --- >60 --- Low Moderate Low.
Peett
524:
?sett A None- --- --- >60 --- Low Moderate Low.
Altvan B None --- --- >60 --- Moderate------ Low Low.
53.: _-- >60 --- Low Moderate Low.
Poets----------- A None ---
Rock outcrop.
54 C None --- --- >60 -- Low Moderate Low.
Pittner
55. 56 C None --- --- 20-40 Soft Low High---- Low.
Henohill
See footnote at end of table.
t
Hello