HomeMy WebLinkAbout991384.tiff SHEET NO. 37
SOIL SURVEY OF WELD COUNTY, COLORADO, NORTHERN PART
(CORNISH QUADRANGLE)
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20—Cascajo gravelly sandy lo..,n, 5 to 20 percent 29—Haverso,. .oam, 0 to 3 percent slopes. This
slopes. This deep, excessively drained soil is on deep, well drained soil is on floors plains and adjacent
backslopes and shoulders of moderately dissected to stream terraces. It formed in stratified, calcareous, loamy
highly dissected upland ridges and breaks. It formed in alluvium.
calcareous gravelly alluvium. Slopes are concave. Areas Typically, the surface layer is pale brown and light
are long and narrow and are 20 to 1,000 acres. brownish gray loam 12 inches thick. The underlying
Typically, 15 to 35 percent of the surface is covered material to a depth of 60 inches or more is very fine
with gravel and cobbles. The surface layer is dark sandy loam and loam stratified with thin lenses of sand,
grayish brown gravelly sandy loam 3 inches thick. The loamy sand, and clay loam. The soil is calcareous
next layer is calcareous very gravelly loamy coarse sand throughout.
21 inches thick. Below this to a depth of 60 inches or Included in this unit are small areas of Nunn loam and
more is calcareous very gravelly loamy coarse sand. Nunn clay loam.
Included in this unit are small areas of soils, on Permeability of this Haverson soil is moderate.
backslopes, shoulders, and crests of upland ridges and Available water capacity is high. Effective rooting depth
breaks, that have fine-grained sandstone or siltstone at a is 60 inches or more. Runoff is slow to medium, and the
depth of 20 to 40 inches; Rock outcrop on shoulders hazard of water erosion is slight. The hazard of soil
and crests of upland ridges and breaks; and Otero sandy blowing is moderate. This soil is subject to brief periods
loam and Stoneham fine sandy loam on the lower parts of flooding in spring and summer.
of backslopes and on upland ridges and breaks. Most areas of this unit are used as rangeland. A few
Included areas make up about 25 percent of the total areas are used as nonirrigated cropland. Winter wheat is
acreage. The percentage varies from one area to the main crop.
another. The potential plant community on this unit is mainly
Permeability of this Cascajo soil is moderately rapid to western wheatgrass, fourwing saltbush, switchgrass,
a depth of 3 inches and rapid below this depth. Available green needlegrass, and blue grama. The average annual
water capacity is moderate. Effective rooting depth is 60 production of air-dry vegetation ranges from 1,000 to
inches or more. Runoff is medium, and the hazard of 3,500 pounds.
water erosion is moderate to very high. The hazard of If the range is overgrazed, the proportion of preferred
soil blowing is slight. forage plants decreases and the proportion of less
Most areas of this unit are used as rangeland. A few preferred forage plants increases. Therefore, livestock
areas are used as a source of gravel. grazing should be managed so that the desired balance
The potential plant community on this unit is mainly of preferred species is maintained in the plant
blue grama, little bluestem, sideoats grama, and prairie community. Range seeding is suitable if the range is in
sandreed. The average annual production of air-dry poor condition. The plants selected for seeding should
vegetation ranges from 500 to 1,200 pounds. meet the seasonal requirements of livestock or wildlife,
If the range is overgrazed, the proportion of preferred or both. Other management practices that are suitable
forage plants decreases and the proportion of less for use on this unit are proper range use, deferred
preferred forage plants increases. Therefore, livestock grazing, and rotation grazing. If the plant cover is
grazing should be managed so that the desired balance disturbed, protection from erosion is needed. Loss of the
of preferred species is maintained in the plant surface layer results in a severe decrease in productivity
community. and in the potential of the soil to produce plants suitable
Areas that are heavily infested with undesirable plants for grazing.
can be improved by proper grazing management. This unit is suited to winter wheat, barley, oats, and
Management practices that are suitable for use on this sorghum. Because precipitation is not sufficient for
unit are proper range use, deferred grazing, and rotation annual cropping, a cropping system that includes small
grazing. Mechanical treatment is not practical because of grain and summer fallow is most suitable. Precipitation
the stony surface and the steepness of slope. If the usually is too low for crops on this unit to make efficient
plant cover is disturbed, protection from erosion is use of fertilizer.
needed. Loss of the surface layer results in a severe Maintaining crop residue on or near the surface
decrease in productivity and in the potential of the soil in reduces soil blowing and helps to maintain soil tilth and
this unit to produce plants suitable for grazing. Slope organic matter content. Stubble-mulch farming,
limits access by livestock and results in overgrazing of striperopping, and minimum tillage help to control erosion
the less sloping areas. and conserve moisture. Terraces reduce runoff and the
This unit is poorly suited to windbreaks and risk of erosion and help to conserve moisture.
environmental plantings. The main limitations are the This unit is well suited to windbreaks and
large accumulations of lime and moderate available environmental plantings. It is limited mainly by brief
water capacity. Supplemental irrigation may be needed periods of flooding. Supplemental irrigation may be
when planting and during dry periods. Summer fallow, needed when planting and during dry periods.
cultivation for weed control, and selection of adapted This map unit is in capability subclass IVe,
plants are needed to insure establishment and survival nonirrigated, and in Overflow range site.
of seedlings.
This map unit is in capability subclass VIls, 36—Manzanola clay loam, 0 to 3 percent slopes.
nonirrigated, and in Gravel Breaks range sire. This deep, well drained soil is on plains, in swales, and
on adjacent stream terraces. It formed in calcareous
clayey alluvium. Slopes are plane or concave.
Most areas of this unit are usea es rangeland. A few Permeability of ,,,is Nunn soil is slow. Available water
areas are used as nonirrigated cropland. Winter wheat is capacity is high. Effective rooting depth is 60 inches or
the main crop. more. Runoff is medium, and the hazard of water erosion
The potential plant community on this unit is mainly is slight to moderate. The hazard of soil blowing is slight.
blue grama, western wheatgrass, and fourwing saltbush. This unit is used as rangeland and nonirrigated
The average annual production of air-dry vegetation cropland. Winter wheat is the main crop.
ranges from 500 to 1,200 pounds. The potential plant community on this unit is mainly
If the range is overgrazed, the proportion of preferred blue grama, western wheatgrass, green needlegrass, and
forage plants decreases and the proportion of less buffalograss. The average annual production of air-dry
preferred forage plants increases. Therefore, livestock vegetation ranges from 400 to 1,200 pounds.
grazing should be managed so that the desired balance If the range is overgrazed, the proportion of preferred
of preferred species is maintained in the plant forage plants decreases and the proportion of less
community. preferred forage plants increases. Therefore, livestock
Range seeding is suitable if the range is in poor grazing should be managed so that the desired balance
condition. The plants selected for seeding should meet of preferred species is maintained in the plant
the seasonal requirements of livestock or wildlife, or community.
both. Other management practices that are suitable for Range seeding is suitable if the range is in poor
use on this unit are proper range use, deferred grazing, condition. The plants selected for seeding should meet
and rotation grazing. Livestock grazing should be the seasonal requirements of livestock or wildlife, or
managed to protect the soil in this unit from erosion. both. Other management practices that are suitable for
This unit is suited to winter wheat, barley, oats, and use on this unit are proper range use, deferred grazing,
sorghum. Because precipitation is not sufficient for and rotation grazing. If the plant cover is disturbed,
annual cropping, a cropping system that includes small protection from erosion is needed. Loss of the surface
grain and summer fallow is most suitable. Precipitation layer results in a severe decrease in productivity and in
usually is too low for crops on this unit to make efficient the potential of the soil to produce plants suitable for
use of fertilizer. grazing.
Maintaining crop residue on or near the surface This unit is well suited to winter wheat, barley, oats,
reduces soil blowing and helps to maintain soil tilth and and sorghum. The fine texture of the surface layer limits
organic matter content. Stubble-mulch farming, the crops that can be grown on this unit. Because
striperopping, and minimum tillage help to control erosion precipitation is not sufficient for annual cropping, a
and conserve moisture. Terraces reduce runoff and the cropping system that includes small grain and summer
risk of erosion and help to conserve moisture. fallow is most suitable. Precipitation usually is too low for
This unit is well suited to windbreaks and crops on this unit to make efficient use of fertilizer.
environmental plantings. It has few limitations. Maintaining crop residue on or near the surface
Supplemental irrigation may be needed when planting reduces runoff, reduces soil blowing, and helps to
and during dry periods. Summer fallow, cultivation for maintain soil tilth and organic matter content. Stubble-
weed control, and selection of adapted plants are mulch farming, striperopping, and minimum tillage help to
needed to insure establishment and survival of control erosion and conserve moisture. Terraces reduce
seedlings. runoff and the risk of erosion and help to conserve
This map unit is in capability subclass IVe, moisture.
nonirrigated, and in Clayey Plains range site. This unit is well suited to windbreaks and
Typically, the surface layer is grayish brown heavy clay environmental plantings. Supplemental irrigation may be
loam 3 inches thick. The subsoil is calcareous clay 22 needed when planting and during dry periods.
inches thick. The substratum to a depth of 60 inches or This map unit is in capability subclass IVe,
more is calcareous clay and clay loam. nonirrigated, and in Clayey Plains range site.
Included in this unit are small areas of Avar fine sandy
loam and soils that have a sodium content of more than
15 percent. Included areas make up about 15 percent of
the total acreage. 44—Olney fine sandy loam, 0 to 6 percent slopes.
Permeability of this Manzanola soil is slow. Available This deep, well drained soil is on smooth to moderately
water capacity is high. Effective rooting depth is 60 dissected plains. It formed in calcareous loamy alluvium.
inches or more. Runoff is medium to slow, and the Typically, the surface layer is brown fine sandy loam 6
hazard of water erosion is slight. The hazard of soil inches thick. The upper 12 inches of the subsoil is sandy
blowing is moderate. clay loam or loam, and the lower 10 inches is calcareous
41—Nunn clay loam, 0 to 6 percent slopes. This sandy loam. The substratum to a depth of 60 inches or
deep, well drained soil is on slightly dissected plains and more is calcareous sandy loam.
stream terraces. It formed in calcareous loamy alluvium. Included in this unit are small areas of Olney loamy
Typically, the surface layer is grayish brown clay loam sand, Ascalon fine sandy loam, and Stoneham fine
8 inches thick. The subsoil is clay loam 14 inches thick. sandy loam.
The substratum to a depth of 60 inches or more is Permeability of this Olney soil is moderate. Available
calcareous clay loam. In some areas the surface layer is water capacity is high. Effective rooting depth is 60
loam. inches or more. Runoff is slow to medium, and the
Included in this unit are small areas of Avar fine sandy hazard of water erosion is slight to moderate. The
loam and Manzanola clay loam. hazard of soil blowing is slight.
Most areas of this unit are useL .s nonirrigated This unit is k. J as nonirrigated cropland and
cropland. Winter wheat is the main crop. A few areas are rangeland. Winter wheat is the main crop.
used as rangeland. This unit is well suited to winter wheat, barley, oats,
This unit is suited to winter wheat, barley, oats, and and sorghum. Low annual precipitation is the main
sorghum. Because precipitation is not sufficient for limitation for the crops that can be grown on this unit.
annual cropping, a cropping system that includes small Because precipitation is not sufficient for annual
grain and summer fallow is most suitable. Precipitation cropping, a cropping system that includes small grain
usually is too low for crops on this unit to make efficient and summer fallow is most suitable. Precipitation usually
use of fertilizer. is too low for crops on this unit to make efficient use of
Maintaining crop residue on or near the surface fertilizer.
reduces runoff, reduces soil blowing, and helps to Maintaining crop residue on or near the surface
maintain soil tilth and organic matter content. Stubble- reduces runoff, reduces soil blowing, and helps to
mulch farming, striperopping, and minimum tillage help to maintain soil tilth and organic matter content. Stubble-
control erosion and conserve moisture. Terraces reduce mulch farming, striperopping, and minimum tillage help to
runoff and the risk of erosion and help to conserve control erosion and conserve moisture. Terraces reduce
moisture. runoff and the risk of erosion and help to conserve
The potential plant community on this unit is mainly moisture.
blue grama, western wheatgrass, sedges, and The potential plant community on this unit is mainly
buffalograss. The average annual production of air-dry blue grama, western wheatgrass, sedges, and
vegetation ranges from 500 to 1,500 pounds. buffalograss. The average annual production of air-dry
If the range is overgrazed, the proportion of preferred vegetation ranges from 500 to 1,500 pounds.
forage plants decreases and the proportion of less If the range is overgrazed, the proportion of preferred
preferred forage plants increases. Therefore, livestock forage plants decreases and the proportion of less
grazing should be managed so that the desired balance preferred forage plants increases. Therefore, livestock
of preferred species is maintained in the plant grazing should be managed so that the desired balance
community. of preferred species is maintained in the plant
Range seeding is suitable if the range is in poor community.
condition. The plants selected for seeding should meet Range seeding is suitable if the range is in poor
the seasonal requirements of livestock or wildlife, or condition. The plants selected for seeding should meet
both. Other management practices that are suitable for the seasonal requirements of livestock or wildlife, or
use on this unit are proper range use, deferred grazing, both. Other management practices that are suitable for
and rotation grazing. If the plant cover is disturbed, use on this unit are proper range use, deferred grazing,
protection from erosion is needed. Loss of the surface and rotation grazing. If the plant cover is disturbed,
layer results in a severe decrease in productivity and in protection from soil blowing is needed. Loss of the
the potential of the soil to produce plants suitable for surface layer results in a severe decrease in productivity
grazing. and in the potential of the soil to produce plants suitable
This unit is well suited to windbreaks and for grazing.
environmental plantings. It is limited mainly by the hazard This unit is well suited to windbreaks and
of soil blowing where the surface layer is barren of environmental plantings. Supplemental irrigation may be
vegetation. Soil blowing can be reduced by cultivating needed when planting and during dry periods.
only in the tree rows and by leaving a strip of vegetation This map unit is in capability subclass IV, nonirrigated,
between the rows. Supplemental irrigation may be and in Loamy Plains range site.
needed when planting and during dry periods. Summer
fallow, cultivation for weed control, and selection of 55—Renohill fine sandy loam, 0 to 6 percent
adapted plants are needed to insure establishment and slopes. This moderately deep, well drained soil is on
survival of seedlings. slightly dissected to moderately dissected plains. It
This map unit is in capability subclass IVe, formed in calcareous loamy or clayey residuum derived
nonirrigated, and in Loamy Plains range site. dominantly from shale.
Typically, the surface layer is brown fine sandy loam 5
inches thick. The subsoil is clay loam 13 inches thick.
54—Platner loam, 0 to 3 percent slopes. This deep, The substratum is calcareous clay loam 14 inches thick.
well drained soil is on smooth to slightly dissected plains Shale is at a depth of 32 inches. Depth to shale ranges
and adjacent stream terraces. It formed in calcareous from 20 to 40 inches. In some areas the surface layer is
loamy alluvium. loam or clay loam.
Typically, the surface layer is grayish brown loam 4 Included in this unit are small areas of Midway clay
inches thick. The subsoil is clay, clay loam, and silty clay loam, Shingle loam, and Rock outcrop of shale.
loam 20 inches thick. The substratum to a depth of 60 Permeability of this Renohill soil is slow. Available
inches or more is calcareous fine sandy loam and sandy water capacity is moderate. Effective rooting depth is 20
loam. to 40 inches. Runoff is medium, and the hazard of water
Included in this unit are small areas of Ascalon fine erosion is slight to moderate. The hazard of soil blowing
sandy loam, Manzanola clay loam, and Nunn clay loam. is moderate.
Also included are soils that have a fine sandy loam or This unit is used as rangeland and nonirrigated
sandy loam surface layer. cropland.
Permeability of this Platner soil is slow. Available water The potential plant community on this unit is mainly
capacity is high. Effective rooting depth is 60 inches or blue grama, western wheatgrass, sedges, and
more. Runoff is slow, and the hazard of water erosion is buffalograss. The average annual production of air-dry
slight. The hazard of soil blowing is moderate. vegetation ranges from 500 to 1,500 pounds.
If the range is overgrazed, the 7ortion of preferred and rotation gi ig. If the plant cover is disturbed,
forage plants decreases and the proportion of less protection from erosion is needed. Loss of the surface
preferred forage plants increases. Therefore, livestock layer results in a severe decrease in productivity and in
grazing should be managed so that the desired balance the potential of the soil to produce plants suitable for
of preferred species is maintained In the plant grazing.
community. This unit is well suited to windbreaks and
Range seeding is suitable if the range is in poor environmental plantings. Supplemental irrigation may be
condition. The plants selected for seeding should meet needed when planting and during dry periods.
the seasonal requirements of livestock or wildlife, or This map unit is in capability subclass je,
both. Other management practices that are suitable for nonirrigated, and in Loamy Plains range site.
use on this unit are proper range use, deferred grazing,
and rotation grazing. If the plant cover is disturbed, 60—Shingle clay loam, 0 to 9 percent slopes. This
protection from erosion is needed. Loss of the surface shallow, well drained soil is on slightly dissected to
layer results in a severe decrease in productivity and in moderately dissected plains, upland ridges, and breaks.
the potential of the soil to produce plants suitable for It formed in calcareous loamy or clayey residuum derived
grazing. dominantly from shale.
This unit is suited to winter wheat, barley, oats, and Typically, the surface layer is yellowish brown clay
sorghum. Because precipitation is not sufficient for loam 4 inches thick. The underlying material is clay loam
annual cropping, a cropping system that includes small 7 inches thick. Shale is at a depth of 11 inches. Depth to
grain and summer fallow is most suitable. Precipitation shale ranges from 10 to 20 inches. The soil is
usually is too low for crops on this unit to make efficient calcareous throughout.
use of fertilizer. Included in this unit are small areas of Renohill fine
Maintaining crop residue on or near the surface sandy loam, Rock outcrop of shale, areas that are
reduces runoff, reduces soil blowing, and helps to intermittently ponded, Thedalund loam, and Keota loam.
maintain soil tilth and organic matter content. Stubble- Included areas make up about 20 percent of the total
mulch farming, striperopping, and minimum tillage help to acreage.
control erosion and conserve moisture. Terraces reduce Permeability of this Shingle soil is moderate. Available
runoff and the risk of erosion and help to conserve water capacity is low. Effective rooting depth is 10 to 20
moisture. inches. Runoff is medium to rapid, and the hazard of
This unit is well suited to windbreaks and water erosion is slight to very high. The hazard of soil
environmental plantings. Supplemental irrigation may be blowing is slight.
needed when planting and during dry periods. This unit is used as rangeland.
This map unit is in capability subclass IVe, The potential plant community on this unit is mainly
nonirrigated, and in Loamy Plains range site. western wheatgrass, blue grama, alkali sacaton, and
loam, 6 to 9percent sideoats grama. The average annual production of air-
56—Renohill fine sandy dry vegetation ranges from 300 to 900 pounds.
slopes. This moderately deep, well drained soil is on If the range is overgrazed, the proportion of preferred
moderately dissected to highly dissected plains. It forage plants decreases and the proportion of less
formed in calcareous loamy or clayey residuum derived preferred forage plants increases. Therefore, livestock
dominantly from shale. grazing should be managed so that the desired balance
Typically, the surface layer is brown fine sandy loam 4 of preferred species is maintained in the plant
inches thick. The subsoil is clay loam 13 inches thick. community.
The substratum is calcareous clay loam 12 inches thick. Range seeding is suitable if the range is in poor
Shale is at a depth of 29 inches. Depth to shale ranges condition. The plants selected for seeding should meet
from 20 to 40 inches. In some areas the surface layer is the seasonal requirements of livestock or wildlife, or
loam. both. Areas that are heavily infested with undesirable
Included in this unit are small areas of Midway clay plants can be improved by proper grazing management.
loam, Shingle loam, and Rock outcrop of shale. Other management practices that are suitable for use on
Permeability of this Renohill soil is slow. Available this unit are proper range use, deferred grazing, and
water capacity is moderate. Effective rooting depth is 20 rotation grazing. If the plant cover is disturbed, protection
to 40 inches. Runoff is medium, and the hazard of water from erosion is needed. Loss of the surface layer results
erosion is moderate. The hazard of soil blowing is high. in a severe decrease in productivity and in the potential
This unit is used as rangeland. of the soil to produce plants suitable for grazing.
The potential plant community on this unit is mainly This unit is poorly suited to windbreaks and
blue grama, western wheatgrass, sedges, and environmental plantings. The main limitations are shallow
buffalograss. The average annual production of air-dry rooting depth and low available water capacity.
vegetation ranges from 400 to 1,300 pounds. This map unit is in capability subclass Vle,
If the range is overgrazed, the proportion of preferred nonirrigated, and in Shaly Plains range site.
forage plants decreases and the proportion of less
preferred forage plants increases. Therefore, livestock 65—Terry sandy loam, 3 to 9 percent slopes. This
grazing should be managed so that the desired balance moderately deep, well drained soil is on moderately
of preferred species is maintained in the plant dissected to highly dissected plains. It formed in
community. calcareous sandy residuum derived from sandstone.
Range seeding is suitable if the range is in poor Typically, the surface layer is grayish brown sandy
condition. The plants selected for seeding should meet loam 5 inches thick. The subsoil is sandy loam 12 inches
the seasonal requirements of livestock or wildlife, or thick. The substratum is calcareous loamy sand 15
both. Other management practices that are suitable for inches thick. Sandstone is at a depth of 32 inches.
use on this unit are proper range use, deferred grazing, Depth to sandstone ranges from 20 to 40 inches.
Included in this unit are small areas of Olney fine
sandy loam, Vona sandy loam, and Tassel loamy fine
sand. Also included are small areas of soils that have a
subsoil of sandy clay loam and have sandy shale at a
depth of 20 to 40 inches and soils that have slopes of
less than 3 percent. Included areas make up about 15
percent of the total acreage.
Permeability of this Terry soil is moderately rapid.
Available water capacity is moderate. Effective rooting
depth is 20 to 40 inches. Runoff is slow, and the hazard
of water erosion is moderate to high. The hazard of soil
blowing is moderate.
This unit is used as rangeland.
The potential plant community on this unit is mainly
blue grama, sand dropseed, prairie sandreed, and
needleandthread. The average annual production of air-
dry vegetation ranges from 700 to 1,800 pounds.
If the range is overgrazed, the proportion of preferred
forage plants decreases and the proportion of less
preferred forage plants increases. Therefore, livestock
grazing should be managed so that the desired balance
of preferred species is maintained in the plant
community.
Range seeding is suitable if the range is in poor
condition. The plants selected for seeding should meet
the seasonal requirements of livestock or wildlife, or
both. Other management practices that are suitable for
use on this unit are proper range use, deferred grazing,
and rotation grazing. If the plant cover is disturbed,
protection from erosion is needed. Loss of the surface
layer results in a severe decrease in productivity and in
the potential of the soil to produce plants suitable for
grazing.
This unit is well suited to windbreaks and
environmental plantings. The main limitations are
restricted rooting depth and low available water capacity.
Supplemental irrigation may be needed when planting
and during dry periods. Summer fallow, cultivation for
weed control, and selection of adapted plants are
needed to insure establishment and survival of
seedlings.
This map unit is in capability subclass Vle,
nonirrigated, and in Sandy Plains range site.
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