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WELD COUNTY, COLORADO, SOUTHERN PART 23
Mindbreaks and environmental plantings of trees and The potential native vegetation is dominated by blue
shrubs commonly grown in the area are generally well grama. Several mid grasses, such as western wheatgrass
suited to this soil. Cultivation to control 'competing and needleandthread, are also present. Potential produc-
vegetation should be continued for as many years as tion ranges from 1,600 pounds per acre in favorable years
possible following planting. Trees that are best suited and to 1,000 pounds in unfavorable years. As range condition
have good survival are Rocky Mountain juniper, eastern deteriorates, the mid grasses decrease; blue grama, buf-
redcedar, ponderosa pine, Siberian elm, Russian-olive, and falograss, snakeweed, yucca, and fringed sage increase;
hackberry. The shrubs best suited are skunkbush sumac, and forage production drops. Undesirable weeds and an-
Siberian peashrub, lilac, and American plum. nuals invade the site as range condition becomes poorer.
Wildlife is an important secondary use of this soil. The Management of vegetation on this soil should be based
cropland areas provide favorable habitat for ring-necked on taking half and leaving half of the total annual produc-
pheasant and mourning dove. Many nongame species can tion. Seeding is desirable if the range is in poor condition.
be attracted by establishing areas for nesting and escape Sideoats grama, little bluestem, western wheatgrass, blue
cover. For pheasants, undisturbed nesting cover is essen- grama, pubescent wheatgrass, and crested wheatgrass are
tial and should be included in plans for habitat develop- suitable for seeding. The grass selected should meet the
ment, especially in areas of intensive agriculture. seasonal requirements of livestock. It can be seeded into
This soil has good potential for urban and recreational a clean, firm sorghum stubble, or it can be drilled into a
development. Increased population growth in the survey firm prepared seedbed. Seeding early in spring has
area has resulted in increased homesite construction. The proven most successful.
chief limiting feature for urban development and road Windbreaks and environmental plantings of trees and
construction is the limited capacity of the soil to support shrubs commonly grown in the area are generally well
l suited to this soil. Cultivation to control competing
a load. Septic tank absorption fields function properly, but ve elation should be continued for as many years as
community sewage systems should be provided if the g
Possible following planting. Trees that are best suited and
population density increases. Because of the permeability
of the substratum, sewage lagoons must be sealed. have good survival are Rocky Mountain juniper, eastern
44 Lawns, shrubs, and trees grow well. Capability class I ir- redcedar, ponderosa pine, Siberian elm, Russian-olive, and
7 hackberry. The shrubs best suited are skunkbush sumac,
t rigated. lilac, Siberian peashrub, and American plum.
a , FIB,,1, tok 8 ppait, This is a deep, Wildlife is an important secondary use of this soil. The
de tamed serf'hri srmootiix Pleb;'and-alluvial fans at cropland areas provide favorable habitat for ring-necked
1 elevations of 4,900 to 5,250 feet. It formed in mixed eolian pheasant and mourning dove. Many nongame species can
4 deposit and parent sediment from a wide variety of be attracted by establishing areas for nesting and escape
bedrock. Included in mapping are small areas of soils that cover. For pheasants, undisturbed nesting cover is essen-
i have loamy sand underlying material. tial and should be included in plans for habitat develop-
Typically the surface layer is brown and pale brown ment, especially in areas of intensive agriculture. Range-
i loam about 12 inches thick. The upper 28 inches of the un-J. land wildlife, for example, the pronghorn antelope, can be
derlying material is pale brown loam. The lower part to a attracted by developing livestock watering facilities,
depth of 60 inches is pale brown fine sandy loam. managing livestock grazing, and reseeding where needed.
r Permeability is moderate. Available water capacity is This soil has good potential for urban and recreational
i high. The effective rooting depth is 60 inches or more. development. Increased population growth in the survey
Surface runoff is medium, and the erosion hazard is low. area has resulted in increased homesite construction. The
In irrigated areas this soil is suited to all crops com- chief limiting soil feature for urban development and road
monly grown in the area, including corn, sugar beets, construction is the limited capacity of this soil to support
beans, alfalfa, small grain, potatoes, and onions. An exam- a load. Septic tank absorption fields function properly, but
ple of a suitable cropping system is 3 to 4 years of alfalfa community sewage systems should be provided if the
followed by corn, corn for silage, sugar beets, small grain, population density increases. Because of the permeability
i or beans. Land leveling, ditch lining (fig. 6), and installing of the substratum, sewage lagoons must be sealed.
pipelines may be needed for proper water applications. Lawns, shrubs, and trees grow well. Capability subclass
All methods of irrigation are suitable, but furrow ir- Ile irrigated, IVe nonirrigated; Loamy Plains range site.
irigation is the most common. Barnyard manure and com- 33—Kim loam, 3 to 5 percent slopes. This is a deep,
mercial fertilizer are needed for top yields. well drained soil on plains and alluvial fans at elevations
In nonirrigated areas this soil is suited to winter wheat, of 4,900 to 5,250 feet. It formed in mixed eolian deposits
barley, and sorghum. Most of the acreage is planted to and parent sediment from a wide variety of bedrock. In-
winter wheat and is summer fallowed in alternate years eluded in mapping are small areas of soils that have
to allow moisture accumulation. Generally precipitation is loamy sand underlying material.
—too low for beneficial use of fertilizer. Typically the surface layer is brown and pale brown
Stubble mulch farming, striperopping, and minimum til- loam about 10 inches thick. The upper 28 inches of the un-
lage are needed to control soil blowing and water erosion. derlying material is pale brown loam. The lower part to a
I
Terracing also may be needed to control water erosion. depth of 60 inches is pale brown fine sandy loam.
G
24
SOIL SURVEY
Permeability is moderate. Available water capacity is land wildlife, for example, the pronghorn antelope, car
high. The effective rooting depth is 60 inches or more. attracted by developing livestock watering facilit
Surface runoff is medium, and the erosion hazard is managing livestock grazing, and reseeding where need(
moderate. This soil has good potential
In irrigated areas this soil is suited to crops commonly development. Increasedpo urban h
population growthidn
recreatic
sur
grown in the area. Perennial grasses and alfalfa or close area has resulted in increased home site construction. '
grown crops should be grown at least 50 percent of the chief limiting soil feature for urban development and r
time. Contour ditches and corrugations can be used in ir- construction is the limited capacity of this soil to supp
rigating close grown crops and pasture. Furrows, contour a load. Septic tank absorption fields function properly,
furrows, and cross slope furrows are suitable for row community sewage systems should be provided if
crops. Sprinkler irrigation is also suggested. Keeping til- population density increases. Because of the permeabii
lage to a minimum and utilizing crop residue help to con- of the substratum, sewage lagoons must be seal
trol erosion. Maintaining fertility is important. Crops Lawns, shrubs, and trees grow well. Capability subcl
respond to applications of phosphorus and nitrogen. IIIe irrigated, IVe nonirrigated; Loamy Plains range s
In nonirrigated areas this soil is suited to winter wheat,
barley, and sorghum. Most of the acreage is planted to 34—Kim loam, 5 to 9 percent slopes. This is a de
winter wheat. The predicted average yield is 28 bushels well drained soil on plains and alluvial fans at elevatic
per acre. The soil is summer fallowed in alternate years of 4,900 to 5,250 feet. It formed in mixed eolian depos
to allow moisture accumulation. Generally precipitation is and parent sediment from a wide variety of bedrock.
too low for beneficial use of fertilizer. eluded in mapping are small areas of soils that ha
Stubble mulch farming, striperopping, and minimum til- loamy sand underlying material.
lage are needed to control soil blowing and water erosion. Typically the surface layer is brown and pale broi
Terracing also may be needed to control water erosion. loam about 10 inches thick. The upper 25 inches of the u
The potential native vegetation is dominated by blue derlying material is pale brown loam. The lower part tc
grama. Several mid grasses, such as western wheatgrass depth of 60 inches is pale brown fine sandy loam.
and needleandthread, are also present. Potential produc- Permeability is moderate. Available water capacity
tion ranges from 1,600 pounds per acre in favorable years high. The effective rooting depth is 60 inches or mm
to 1,000 pounds in unfavorable years. As range condition Surface runoff is rapid, and the erosion hazard
deteriorates, the mid grasses decrease; blue grama, buf- moderate.
falograss, snakeweed, yucca, and fringed sage increase; This soil is suited to limited cropping. Intensi'
and forage production drops. Undesirable weeds and an- cropping is hazardous because of erosion. The croppit
nuals invade the site as range condition becomes poorer. system should be limited to such close grown crops as a
Management of vegetation on this soil should be based falfa, wheat, and barley. This soil also is suited to i
on taking half and leaving half of the total annual produc- rigated pasture. A suitable cropping system is 3 to
tion. Seeding is desirable if the range is in poor condition. years of alfalfa followed by 2 years of corn and sma
Sideoats grama, little bluestem, western wheatgrass, blue grain and alfalfa seeded with a nurse crop.
grama, pubescent wheatgrass, and crested wheatgrass are Close grown crops can be irrigated from closely space
suitable for seeding. The grass selected should meet the contour ditches or sprinklers. Contour furrows or sprii
seasonal requirements of livestock. It can be seeded into klers should be used for new crops. Applications c
a clean, firm sorghum stubble, or it can be drilled into a nitrogen and phosphorus help in maintaining good prods
firm prepared seedbed. Seeding early in spring has tion.
proven most successful. The potential native vegetation is dominated by blu
Windbreaks and environmental plantings of trees and grama. Sideoats grama, little bluestem, western wheal
shrubs commonly grown in the area are generally well grass, and sedge are also prominent. Potential production.
suited to this soil. Cultivation to control competing ranges from 1,800 pounds per acre in favorable years t
vegetation should be continued for as many years as 1,500 pounds in unfavorable years. As range conditio
possible following planting. Trees that are best suited and deteriorates, the sideoats grama and little bluester
have good survival are Rocky Mountain juniper, eastern decrease; forage production drops; and blue grama, buf
redcedar, ponderosa pine, Siberian elm, Russian-olive, and falograss, and several perennial forbs and shrubs in
hackberry. The shrubs best suited are skunkbush sumac, crease. Undesirable weeds and annuals invade the site a.
lilac, Siberian peashrub, and American plum. range condition becomes poorer.
Wildlife is an important secondary use of this soil. The Management of vegetation should be based on taking
cropland areas provide favorable habitat for ring-necked half and leaving half of the total annual production. Seed
pheasant and mourning dove. Many nongame species can ing is desirable if the range is in poor condition. Sideoat:
be attracted by establishing areas for nesting and escape grama, little bluestem, western wheatgrass, and pu
• :: cover. For pheasants, undisturbed nesting cover is essen- bescent wheat
tial and should be included in plans for habitat develop- selected should
gmeet thss are e seasonal uitable for seeding. a
sea onalneedsof livestock. Il
I ment, especially in areas of intensive agriculture. Range- can be seeded into a clean, firm sorghum stubble, or it
i -
WELD COUNTY, COLORADO, SOUTHERN PART 31
attracted by developing livestock watering facilities, establishing trees and shrubs, can be controlled by cul-
managing livestock grazing and reseeding where needed. tivating only in the tree row and by leaving a strip of
This soil has good potential for urban development. The vegetation between the rows. Supplemental irrigation
only limiting feature is the moderately rapid permeability may be needed at the time of planting and during dry
in the substratum, which causes a hazard of ground water periods. Trees that are best suited and have good survival
contamination from sewage lagoons. The loamy sand sur- are Rocky Mountain juniper, eastern redcedar, ponderosa
face layer is a limitation for recreational development. pine, Siberian elm, Russian-olive, and hackberry. The
Once established, the lawns, shrubs, and trees grow well. shrubs best suited are skunkbush sumac, lilac, and Siberi-
Capability subclass IIIe irrigated, IVe nonirrigated; an peashrub.
Sandy Plains range site. Wildlife is an important secondary use of this soil. The
45—Olney loamy sand, 3 to 5 percent slopes. This is a cropland areas provide favorable habitat for ring-necked
deep, well drained soil on plains at elevations of 4,600 to pheasant and mourning dove. Many nongame species can
5,200 feet. It formed in mixed outwash deposits. Included be attracted by establishing areas for nesting and escape
in mapping are small areas of soils that have sandstone cover. For pheasants, undisturbed nesting cover is essen-
and shale within a depth of 60 inches and some small tial and should be included in plans for habitat develop-
leveled areas. ment, especially in areas of intensive agriculture. Range-
Typically the surface layer of this Olney soil is grayish land wildlife, for example, the pronghorn antelope, can be
brown loamy sand about 7 inches thick. The subsoil is yel- attracted by developing livestock watering facilities,
lowish brown and very pale brown sandy clay loam about managing livestock grazing, and reseeding where needed.
14 inches thick. The substratum to a depth of 60 inches is This soil has good potential for urban development. The
very pale brown, calcareous fine sandy loam. only limiting feature is the moderately rapid permeability
Permeability and available water capacity are in the substratum, which causes a hazard of ground water
moderate. The effective rooting depth is 60 inches or contamination from sewage lagoons. The loamy sand sur-
more. Surface runoff is slow, and the erosion hazard if face layer is a limitation for recreational development.
low. Once established, the lawns, shrubs, and trees grow well.
In irrigated areas this soil is suited to the crops corn- Capability subclass IIIe irrigated, VI nonirrigated; Sandy
monly grown in the area. Perennial grasses and alfalfa or Plains range site.
close grown crops should be grown at least 50 percent of
the time. Close grown crops and pasture can be irrigated '1 i?is is a deep, drained sm on smoo hs"'at va-
with contour ditches and corrugations. Furrows, contour tions of 4,600 to 5,200 feet. It formed in mixed outwash
furrows, and cross slope furrows are suitable for row deposits. Included in mapping are small areas of soils that
crops. Sprinkler irrigation is also desirable. Keeping til- have a dark surface layer and some small leveled areas.
lage to a minimum and utilizing crop residue help to con- Typically the surface layer of this Olney soil is grayish
trol erosion. Maintaining fertility and organic matter con- brown fine sandy loam about 10 inches thick. The subsoil
tent is important. Crops respond to barnyard manure and is yellowish brown and very pale brown sandy clay loam
commercial fertilizer. about 15 inches thick. The substratum to a depth of 60
The potential native vegetation on this range site is inches is very pale brown, calcareous fine sandy loam.
dominated by sand bluestem, sand reedgrass, and blue Permeability and available water capacity are
grama. Needleandthread, switchgrass, sideoats grama, moderate. The effective rooting depth is 60 inches or
and western wheatgrass are also prominent. Potential more. Surface runoff is slow, and the erosion hazard is
production ranges from 2,200 pounds per acre in favora- low.
ble years to 1,800 pounds in unfavorable years. As range This soil is used almost entirely for irrigated crops. It
condition deteriorates, the sand bluestem, sand reedgrass, is suited to all crops commonly grown in the area, includ-
and switchgrass decrease and blue grama, sand dropseed, ing corn, sugar beets, beans, alfalfa, small grain, potatoes,
and sand sage increase. Annual weeds and grasses invade and onions. An example of a suitable cropping system is 3
the site as range condition becomes poorer. to 4 years of alfalfa followed by corn, corn for silage,
Management of vegetation on this soil should be based sugar beets, small grain, or beans. Few conservation prac-
on taking half and leaving half of the total annual produc- tices are needed to maintain top yields.
tion. Seeding is desirable if the range is in poor condition. All methods of irrigation are suitable, but furrow ir-
Sand bluestem, sand reedgrass, switchgrass, sideoats rigation is the most common. Barnyard manure and com-
grama, blue grama, pubescent wheatgrass, and crested mercial fertilizer are needed for top yields.
wheatgrass are suitable for seeding. The grass selected Windbreaks and environmental plantings are generally
should meet the seasonal requirements of livestock. It can suited to this soil. Soil blowing, the principal hazard in
be seeded into clean, firm sorghum stubble, or it can be establishing trees and shrubs, can be controlled by cul-
drilled into a firm prepared seedbed. Seeding early in tivating only in the tree row and by leaving a strip of
spring has proven most successful. vegetation between the rows. Supplemental irrigation
Windbreaks and environmental plantings are generally may be needed at the time of planting and during dry
suited to this soil. Soil blowing, the principal hazard in periods. Trees that are best suited and have good survival
32
SOIL SURVEY
are Rocky Mountain juniper, eastern redcedar, ponderosa ble years to 1,800 pounds in unfavorable years. As range
pine, Siberian elm, Russian-olive, and hackberry. The condition deteriorates, the sand bluestem, sand reedgrass,
shrubs best suited are skunkbush sumac, lilac, and Siberi- and switchgrass decrease and blue grama, sand dropseed,
an peashrub. and sand sage increase. Annual weeds and Wildlife is an important secondary use of this soil. The the site as range condition becomes poorer.grasses invade
cropland areas provide favorable habitat for ring-necked Management of vegetation on this soil should be based
pheasant and mourning dove. Many nongame species can on taking half and leaving half of the total annual produc-
be attracted by establishing areas for nesting and escape tion. Seeding is desirable if the range is in poor condition.
cover. For pheasants, undisturbed nesting cover is essen- Sand bluestem, sand reedgrass, switchgrass, sideoats
tial and should be included in plans for habitat develop- grama, blue grama, and pubescent wheatgrass are suita-
ment, especially in areas of intensive agriculture. ble for seeding. The grass
Rapid expansion of Greeley and the surrounding area seasonal requirements of livestock. It can be seeded into
has resulted in urbanization of much of this Olney soil. a clean, firm sorghum stubble, or it can be drilled into a
This soil has good potential for urban and recreational firm prepared seedbed. Seeding early in spring has
development. The only limiting feature is the moderately proven most successful.
rapid permeability in the substratum, which causes a Windbreaks and environmental plantings are generally
hazard of ground water contamination from sewage suited to this soil. Soil blowing, the principal hazard in
lagoons. Lawns, shrubs, and trees grow well. Capability establishing trees and shrubs, can be controlled by cul-
class Iirrigated. tivating only in the tree row and by leaving a strip of
I--Olney fine sandy loam, 1 to 3 percent slopes. vegetation between the rows. Supplemental irrigation
This is a deep, well drained soil on plains at elevations of may be needed at the time of planting and during dry
4,600 to 5,200 feet. It formed in mixed outwash deposits. periods. Trees that are best suited and have good survival
Included in mapping are small areas of soils that have a are Rocky Mountain juniper, eastern redcedar, ponderosa
dark surface layer. Some small leveled areas are also in- pine, Siberian elm, Russian-olive, and hackberry. The
eluded. shrubs best suited are skunkbush sumac, lilac, and Siberi-
Typically the surface layer of this Olney soil is grayish an peashrub.
brown fine sandy loam about 10 inches thick. The subsoil Wildlife is an important secondary use of this soil. The
is yellowish brown and very pale brown sandy clay loam cropland areas provide favorable habitat for ring-necked
about 14 inches thick. The substratum to a depth of 60 pheasant and mourning dove. Many nongame species can
inches is very pale brown, calcareous fine sandy loam. be attracted by establishing areas for nesting and escape
Permeability and available water capacity are cover. For pheasants, undisturbed nesting cover is essen-
moderate. The effective rooting depth is 60 inches or tial and should be included in plans for habitat develop-
more. Surface runoff is medium, and the erosion hazard is ment, especially in areas of intensive agriculture. Range-
; low. land wildlife, for example, the pronghorn antelope, can be
In irrigated areas this soil is suited to all crops com- attracted by developing livestock watering facilities,
monly grown in the area, including corn, sugar beets, managing livestock grazing, and reseeding where needed.
beans, alfalfa, small grain, potatoes, and onions. An exam- Rapid expansion of Greeley and the surrounding area
ple of a suitable cropping system is 3 to 4 years of alfalfa has resulted in urbanization of much of the Olney soil.
followed by corn, corn for silage, sugar beets, small grain, This soil has good potential for urban and recreational
d or beans. Land leveling, ditch lining, and installing development. The only limiting feature is the moderately
pipelines may be needed for proper water application. All rapid permeability in the substratum, which causes a
methods of irrigation are suitable, but furrow irrigation is hazard of ground water contamination from sewage
the most common. Barnyard manure and commercial fer- lagoons. Lawns, shrubs, and trees grow well. Capability
tilizer are needed for top yields. subclass Ile irrigated, IVe nonirrigated; Sandy Plains
In nonirrigated areas this soil is suited to winter wheat, range site.
barley, and sorghum. Most of the acreage is planted to 48—Olney fine sandy loam, 3 to 5 percent slopes.
winter wheat. The predicted average yield is 28 bushels This is a deep, well drained soil on plains at elevations of
per acre. The soil is summer fallowed in alternate years 4,600 to 5,200 feet. It formed in mixed outwash deposits.
to allow moisture accumulation. Generally precipitation is Included in mapping are small areas of soils that have a
too low for beneficial use of fertilizer. dark surface layer and small areas of soils that have
Stubble mulch farming, striperopping, and minimum til- sandstone and shale within a depth of 60 inches.
lage are needed to control soil blowing and water erosion. Typically the surface layer of this Olney soil is grayish
Terracing also may be needed to control water erosion. brown fine sandy clay loam about 8 inches thick. The sub-
The potential native vegetation on this range site is soil is yellowish brown and very pale brown fine sandy
dominated by sand bluestem, sand reedgrass, and blue loam about 12 inches thick. The substratum to a depth of
grama. Needleandthread, switchgrass, sideoats grama, 60 inches is very pale brown, calcareous fine sandy loam.
and western wheatgrass are also prominent. Potential Permeability and available water capacity are
production ranges from 2,200 pounds per acre in favora- moderate. The effective rooting depth is 60 inches or
WELD COUNTY, COLORADO, SOUTHERN PART 101
- TABLE 6.--BUILDING SITE DEVELOPMENT--Continued
_r
Soil name and Shallow Dwellings 1 Dwellings Small Local roads
map symbol i excavations without I with , commercial , and streets
basements basements buildings
19 Moderate: Severe: Severe: Severe: Severe:
Colombo floods. floods. floods. floods. floods.
20 Slight Moderate: Moderate: Moderate: Moderate:
Colombo low strength. low strength. low strength. low strength, .
frost action.
21, 22 Severe: Moderate: Slight Moderate: Severe:
Dacono cutbanks cave. low strength, low strength, shrink-swell,
shrink-swell. shrink-swell. low strength.
23, 24 Slight Moderate: Moderate: Moderate: Moderate: .I
Fort Collins low strength. low strength, low strength. low strength.
shrink-swell.
25, 26 Severe: Severe: Severe: Severe: Severe:
Haverson floods. floods. floods. floods. floods. i
27, 28 Severe: Severe: Severe: Severe: Severe:
Heldt too clayey. shrink-swell, shrink-swell, shrink-swell, shrink-swell,
low strength. low strength. low strength. low strength.
29, 30 Slight Moderate: Moderate: Moderate: Moderate:
Julesburg low strength. low strength. low strength. low strength,
frost action.
31, 32 Slight Moderate: Moderate: Moderate: Moderate: $$
Kim low strength. low strength. low strength. low strength.
33, �4 Slight Moderate: Moderate: Moderate: Moderate:
Ki low strength. low strength. low strength, low strength.
slope.
35*: ;4
Loup Severe: Severe: Severe: Severe: Severe:
wetness, wetness, wetness, wetness, wetness.
cutbanks cave. floods. floods. floods.
Boel Severe: Severe: Severe: Severe: Severe:
wetness, wetness, wetness, wetness, wetness,
floods, floods. floods. floods. floods.
cutbanks cave.
36*:
Midway Severe: Severe: Severe: Severe: Severe:
too clayey. shrink-swell, shrink-swell, slope, shrink-swell,
low strength. low strength. shrink-swell, low strength. 1j
low strength. 4"
Shingle Severe: Severe: Severe: Severe: Severe:
depth to rock. depth to rock. depth to rock. depth to rock, depth to rock.
slope.
iP
, 37 Severe: Moderate: Severe: Moderate: Moderate:
Nelson depth to rock. depth to rock, depth to rock. depth to rock, depth to rock, F
low strength. low strength. low strength.
38 i Severe: Moderate: Severe: Moderate: Moderate: 'i
Nelson depth to rock. depth to rock, depth to rock. slope, depth to rock,
low strength. depth to rock, low strength.
low strength.
s_;
39, 40, 41, 42, cf
43 ;Moderate: Severe: Severe: Severe: Severe: Rd
Nunn too clayey. shrink-swell, shrink-swell, shrink-swell, shrink-swell,
low strength. low strength. low strength. low strength. {¢
d
;e footnote at end of table. k'^
CI
ll 102 SOIL SURVEY '
t
TABLE 6.--BUILDING SITE DEVELOPMENT--Continued
r-
I ,Soil name and Shallow Dwellings Dwellings I Small I Local roads
!-i map symbol excavations without with I commercial I and streets
^,i -- basements basements buildings
I i
44 Slight I I
III Olney g Slight Slight ;Slight ;Moderate:
j! I 1 low strength.
45 Slight
Olney Slight Slight ;Moderate: ;Moderate:
slope. I low strength.
46, 47 Sli ht
!', Olney g Slight Slight :Slight ;Moderate:
I I low strength.
j' 48 Slight Slight Slight ;Moderate: :Moderate:
Olney
I slope. I lows low stren
gth.
49 Severe: Slight Slight I Osgood cutbanks cave. g Slight (Slight.
,
50, 51 Slight Slight
Otero g Slight Slight (Slight.
I
,
52, 53 Slight Slight Slight Moderate: Slight. a
Otero
slope.
I: 54 Slight Severe: Severe: Severe: Moderate: ?,Paoli floods. floods. floods. low strength, '
frost action.
-I 55 Slight Slight Slight
n Paoli Slight Moderate:
i low strength,
frost action. .
[ 56 Moderate: Moderate: Moderate: ,Moderate: Severe: ,�. Renohill depth to rock, low strength, low strength, i low strength, low strength,
too clayey. shrink-swell. depth to rock, ''
P i shrink-swell, shrink-swell.
11 shrink-swell. I
,.
57 Moderate: Moderate: Moderate: Moderate: Severe:
{ Renohill depth to rock, low strength, low strength, slope, low strength,
I too clayey. shrink-swell. depth to rock, I low strength, shrink-swell.
shrink-swell, shrink-swell. 6
58, 59 Severe: Severe: Severe: Severe: Severe: t
Shingle depth to rock. depth to rock. depth to rock. depth to rock. depth to rock.
1.
60*:
I Shingle Severe: Severe: Severe: Severe: Severe:
depth to rock, depth to rock, depth to rock, depth to rock. depth to rock.
/
Renohill Moderate: Moderate: Moderate: Moderate: Severe:
depth to rock, low strength, low strength, slope, low strength,
too clayey. shrink-swell, depth to rock, low strength, shrink-swell. r
shrink-swell. shrink-swell.
61 Moderate: Moderate: Moderate: Severe: Moderate:
Tassel depth to rock. depth to rock. depth to rock. slope. depth to rock.
62 Severe: Moderate: Severe: Moderate: Moderate:
Terry depth to rock. depth to rock. depth to rock. depth to rock. depth to rock. ;
63 Severe: Moderate: Severe: Moderate: Moderate:Terry depth to rock. depth to rock. depth to rock. depth to rock, depth to rock.
slope.
64
Moderate: Moderate: Moderate: Moderate: Moderate:
Thedalund depth to rock. low strength. depth to rock. low strength. low strength. 4,
65 Moderate: Moderate: Moderate: Moderate: Moderate:Thedalund depth to rock, low strength. depth to rock. low strength, low strength.
slope.
See footnote at end of table. 4
i
t
d
'I
4'
WELD COUNTY, COLORADO, SOUTHERN PART 105 vV
TABLE 7.--SANITARY FACILITIES--Continued
: :
Soil name and Septic tank Sewage lagoon Trench ; Area Daily cover
map symbol absorption areas sanitary I sanitary for landfill
fields landfill : landfill
.
21 , 22 Severe: Severe: Severe: :Slight Fair:
Dacono percs slowly. seepage. seepage. too clayey.
:
23 Moderate: Moderate: Slight :Slight :Good.
Fort Collins percs slowly. seepage. :
24 Moderate: Moderate: ,Slight :Slight :Good.
Fort Collins percs slowly. seepage,
slope.
25, 26 Severe: Severe: :Severe: :Severe: :Good.
Meyerson floods. floods. : floods. I floods.
I'
27, 28 Severe: Moderate: :Severe: Slight :Poor: '
Heldt percs slowly. slope. : too clayey. : too clayey. :l';
29, 30 Slight Severe: Severe: Severe: :Good.
Julesburg seepage. seepage. seepage. f.
31 Slight Moderate: Slight Slight :Good.
Kim seepage.
32, 33 Slight Moderate: Slight Slight :Good.
Kim seepage,
slope.
34 Slight Severe: Slight Slight :Good.
Kim slope. ' t
35*. .
Le _ Severe: Severe: Severe: Severe: :Poor:
wetness, wetness, wetness, wetness, ; wetness.
floods. seepage, floods, : floods,
floods. seepage. : seepage.
noel Severe: Severe: Severe: :Severe: :Poor: `-
wetness, wetness, wetness, : wetness, : too sandy. }
floods. seepage, floods, : floods.
floods. seepage. :
36*:
Midway Severe: Severe: Severe: Moderate: Poor:
percs slowly, depth to rock, depth to rock, slope. too clayey, µ!
depth to rock. slope. too clayey. thin layer.
Shingle Severe: Severe: Severe: Moderate: Severe: +
depth to rock. slope, depth to rock. slope. thin layer.
depth to rock.
37, 38 Severe: Severe: Severe: :Severe: Fair:
Nelson depth to rock. depth to rock, depth to rock, : seepage. thin layer.
seepage. seepage.
39 Severe: Moderate: Slight :Slight Fair:
Nunn percs slowly. excess humus. too clayey.
40 Severe: Moderate: Slight :Slight :Fair:
Nunn percs slowly. excess humus, : : too clayey.
slope.
41 Severe: Moderate: Slight ;Slight ;Fair:
Nunn percs slowly. excess humus. : too clayey.
42 Severe: Moderate: Slight :Slight :Fair:
Nunn percs slowly. excess humus, : 1 too clayey.
slope.
ee footnote at end of table.
1
106 SOIL SURVEY
TABLE 7.--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 w"p.
43 Severe: Moderate: Slight Slight Fair:
Nunn percs slowly. excess humus. too clayey.
Y Y•
44, 45, 46, 47, 48-- Slight Severe: Slight Slight Good.
Olney seepage.
49 Slight Severe: Severe: Severe: Fair:
Osgood seepage. seepage. seepage. too sandy. {!:
50, 51 , 52 Slight Severe: Slight Slight Good.
ip
Otero seepage. is
53 Slight Severe: Slight Slight Good. ' `,
Otero slope,
seepage.
54 Slight Severe: Severe: Severe: Good.
Paoli seepage. seepage. seepage.
55 Slight Severe: Severe: Severe: Good.
Paoli seepage. seepage. seepage. q1
56, 57 Severe: Severe: Severe: Slight Fair:
Renohill percs slowly, depth to rock. depth to rock. too clayey,
depth to rock. thin layer. qk
58, 59 Severe: Severe: Severe: Slight Poor: $.
Shingle depth to rock. depth to rock, depth to rock, thin layer, Y `
60*:
Shingle Severe: Severe: Severe: Slight Poor: t
depth to rock. depth to rock, depth to rock. thin layer.
Renohill Severe: Severe: Severe: Slight Fair:
percs slowly, depth to rock. depth to rock. too clayey,
depth to rock. thin layer.
61 Severe: Severe: Severe: Severe: Poor:
Tassel depth to rock, depth to rock, depth to rock, seepage, thin layer, 5+ki
:.,.
seepage, seepage, area reclaim.
slope. i?
'4t
62, 63 Severe: Severe: Severe: Slight Fair: gg
�
Terry depth to rock. depth to rock, depth to rock. thin layer, F.,.
seepage. area reclaim. 16 !'
64, 65 Severe: Severe: Severe: Slight Fair: 3
Thedalund depth to rock. depth to rock. depth to rock, thin layer.
66 Severe: Slight Moderate: Slight Poor: I o'•
Ulm peres slowly. too clayey. too clayey.
67 Severe: Moderate: Moderate: Slight Poor: ' yak
Ulm peres slowly. slope. too clayey. too clayey. i
68* Moderate: Severe: Severe: Severe: Poor:
Ustic Torriorthents slope. seepage, seepage, seepage. too sandy, ;
small stones. too sandy. small stones.
69, 70 Slight Severe: Severe: Severe: Poor:
Valent seepage. too sandy, seepage. too sandy.
seepage, 's
71*:
Valent Slight Severe: Severe: Severe: Poor: aia
seepage, too sandy, seepage. too sandy. ..
k,
seepage. lg
7
v,
— See footnote at end of table.
.8:r
•
1 Si WELD COUNTY, COLORADO, SOUTHERN PART 109
zi g
TABLE 8.--CONSTRUCTION MATERIALS--Continued
I TI
t: Soil name and ; Roadfill ; Sand Gravel ; Topsoil
map symbol ; i I 1
,
,
;
29, 30 Fair: :Poor: :Unsuited ;Good.
Julesburg low strength, ; excess fines.
frost action. i
31 , 32, 33, 34 Fair: :Unsuited ;Unsuited Good.
Kim low strength.
35': I
Loup Poor: :Fair: :Unsuited: Poor:
wetness. ; excess fines. I excess fines. wetness.
Boel Fair: 1Fair: ;Unsuited 'Fair:
wetness. ; excess fines. ; thin layer.
,
36':
Midway Poor: ;Unsuited :Unsuited ;Poor:
shrink-swell, I too clayey.
low strength, ;
thin layer. I 1
; ;
.i; Shingle Poor: :Unsuited Unsuited ;Poor:
'}7 thin layer. I area reclaim.
.
�a3�: 37, 38 Poor: - ;Unsuited Unsuited ;Good.
Nelson thin layer.
,112
I 1 39, 40 Poor: :Unsuited Unsuited ;Fair:
Nunn shrink-swell, ; I thin layer.
low strength. i I
41 , 42 Poor: Unsuited ;Unsuited Fair:
Nunn shrink-swell, ; thin layer,
i �1 low strength. I too clayey.
l
rn • '
,111-443 Poor: Unsuited ;Unsuited Poor:
1'1141'1 Nunn shrink-swell, too sandy.
low strength.
'1111"r;41 ;
' ,gip 44, 45 Fair: Poor: :Unsuited Fair:
1 i Olney low strength. excess fines. I too sandy,
thin layer.
? Y 46, 47, 48 Fair: Poor: Unsuited Good.
°r+.`} 11 Olney low strength. excess fines
.r
49 Good Poor: Unsuited Poor:
' Osgood excess fines. too sandy.
11:1;,4 , 50, 51, 52, 53 Good Poor: Unsuited Good.
,1'7i"1,$ Otero excess fines. I
,it; 54, 55 Fair: Unsuited Unsuited ;Good.
p 46 Paoli low strength,
ti frost action. ;
"4-1';44,
nae 56, 57 Poor: Unsuited Unsuited :Poor:
1,,L'414411Renohill low strength, 1 thin layer.
J , thin layer. •
i
r �' 58, 59 Poor: Unsuited Unsuited ;Poor:
Shingle thin layer. ; area reclaim.
Al
lkf t1f 60': •
114OShingle Poor: Unsuited Unsuited ;Poor:
thin layer. ' ; area reclaim.
G
' See footnote at end of table.
11.4
"v.t.
.:f
ii
130 SOIL SURVEY
TABLE 13.--PHYSICAL AND CHEMICAL PROPERTIES OF SOILS--Continued
_. : 1 r d Risk of corrosion I Erosion Win
Soil name and :Depth: Permea- Available: Soil :Salinity: Shrink- I factors erodi- 'N
map symbol : 1 bility water :reaction : : swell Uncoated :Concrete 1 bility
capacity 1 : :potential steel : K T group_
1 In In/hr In/in 1 0 :Mmhos/em: '
3
29, 30 1 0-12 2.0-20 0.11-0.151-6.6-7.8 : <2 :Low Moderate Low 0.24 5 3
Julesburg :12-27 2.0-20 0.11-0.15: 6.6-7.8 : <2 :Low Moderate Low 0.24
:27-60 >6.0 0.05-0. 13: 6.6-7.8 : <2 :Low Moderate Low 0.20 iJ
: : 1 Y
31 , 32, 33, 34 0-12 0.6-2.0 0.16-0. 181 7.9-8.4 <2 :Low Moderate Low 0.32 5 4L � .
Kim 12-60 0.6-2.0 0.15-0.171 7.9-8.4 <2 Low Moderate Low 0.32
35*: i
Loup 0-16 6.0-20 0.10-0.14 6.6-8.4 <2 Lou High Low 0. 17 5 2
16-60 6.0-20 0.06-0.08 7.4-8.4 <2 Low High Low 0.17
Boel 0-14 6.0-20 0.10-0.12 6.6-8.4 <2 Low High Low 0.17 5 2
14-60 6.0-20 0.05-0.07 6.6-8.4 <2 Low High Low 0. 17
36*: ;.
Midway 0-13 0.06-0.2 0.12-0.17 7.9-9.0 2-8 High High Low 0.43 1 4 1I
13 --- --- --- --- --- .t
Shingle : 0-6 0.6-2.0 0.16-0.18 7.4-9.0 <2 Low High Low 0.32 2 4L
6-18 0.6-2.0 0.16-0.21 7.9-9.0 <2 Moderate High Low 0.49 I .'18SSS
37, 38 ; 0-9 2.0-6.0 0.13-0. 15 7.9-8.4 <2 Low High Low 0.20 2 3 .
Nelson 19-30 2.0-6.0 0.11-0.13 7.9-8.4 <2 Low High Low 0.20
30 --- --- --- --- --- � '�.
39, 40, 41, 42 1 0-9 0.2-2.0 0.15-0.20 6.6-7.8 <2 Moderate Moderate Low 0.24 5 6
Nunn : 9-29 0.06-0.6 0.15-0.18 7.4-8.4 <2 High High Low 0.28
129-60 0.2-2.0 0.10-0.18 7.4-8.4 <2 Moderate High Low 0.24
43 I 0-9 2.0-6.0 0.10-0.14 6.6-7.8 <2 Low Moderate Low 0.15 5 3
_Nunn : 9-29 0.06-0.6 0.15-0.18 7.4-8.4 <2 High High Low 0.28
:29-60 0.2-2.0 0.10-0. 18 7.4-8.4 <2 Moderate High Low 0.24
i
,4, 45 0-10 6.0-20 0.06-0.10 6.6-7.8 <2 Low Low Low 0.17 5 2
Olney 10-20 0.6-2.0 0.13-0.15 6.6-7.8 <2 Moderate High Low 0.24
20-25 0.6-6.0 0.11-0.15 7.9-8.4 <2 Low High Low 0.24 ,r
25-60 2.0-6.0 0.06-0.13 7.9-8.4 <2 Low High Low 0.20 ;.
y
46, 47, 48 0-10 0.6-6.0 0.11-0.15 6.6-7.8 <2 Low Moderate Low 0.20 5 3 1 ;'
Olney 10-20 0.6-2.0 0.13-0.15 6.6-7.8 <2 Moderate High Low 0.24
20-25 0.6-6.0 0.11-0.15 7.9-8.4 <2 Low High Low 0.24
25-60 2.0-6.0 0.06-0.13, 7.9-8.4 <2 Low High Low 0.20
: t
49 : 0-22 6.0-20 :0.05-0.08: 6.6-7.3 --- Low Low Low 0.10 5 1 ,.
Osgood 122-34 2.0-6.0 :0.10-0.13: 6.6-7.3 --- Low Low Low 0.17
:34-60 6.0-20 :0.06-0.081 6.6-8.4 <2 Low Moderate Low 0. 10
Y
50, 51 , 52, 53 : 0-12 6.0-20 10.09-0.131 7.4-8.4 <2 Low High Low 0.10 5 2 m
Otero 112-60 6.0-20 10.08-0.12: 7.4-8.4 <4 Low High Low 0.10 ,.
54, 55 : 0-20 0.6-2.0 :0.16-0.18: 6.6-7.3 --- Low Moderate Low 0.20 5 5
Paoli :20-25 >6.0 :0.14-0.17: 7.4-7.8 <2 Low High Low 0.20
:25-60 >6.0 0.12-0.14: 7.4-8.4 <2 Low High Low 0.20
56, 57 1 0-9 0.2-0.6 0.17-0.21 : 6.6-7.8 <2 Moderate High Low 0.37 3 6
Renohill : 9-32 0.06-0.2 0.14-0.16: 6.6-8.4 <2 High High Low 0.32
32 --- --' 1 --- ---
58, 59 : 0-6 0.6-2.0 0.16-0.18: 7.4-9.0 <2 Low High Low 0.32 2 4L
Shingle 1 6-18 0.6-2.0 0.16-0.21 : 7.9-9.0 <2. Moderate High Low 0.49
18 ___
60*:
Shingle . 1 0-6 0.6-2.0 0.16-0.181 7.4-9.0 <2 Low High Low 0.32 2 4L
6-18 0.6-2.0 10.16-0.21 : 7.9-9.0 <2 Moderate High Low 0.49
18 ---
,u
See footnote at end of table.
4 '
132
SOIL SURVEY
TABLE 14.--SOIL AND WATER FEATURES
[Absence of an entry indicates the feature is not a concern. See text for descriptions of symbols and such
terms as "rare," "brief," and "perched." The symbol < means less than; > means greater than] i'
3
Flooding 1a.+ .
Soil name and ;Hydro-; High water table Bedrock d
map symbol : logic; Frequency Duration Months Depth ; Kind Months Depth:Hard- Potential
frost al
;group ;
Ft ness action
— ; In ;
---
1, 2 I B ;None _ >6.0 S .
Altvan
--- ; Moderate.
;
3 I ;
Aquolls D ;Frequent---- Brief Apr-Jun 0.5-1.0;A Apparent Apr-Jun; >60 --- High.
Aquents D ;Frequent-
9 Brief Apr-Jun 0.5-1.0 Apparent Apr-Jun; >60 --- High.
4*• g
Aquolls D :Frequent--
9 Brief Apr-Jun 0.5-1.5 Apparent Apr-Jun; >60 --- High.
Aquepts D ;Frequent-___ Brief Apr-Jun 0.5-1.5 Apparent A r-
i
PP Apr-Jun:Jun; >60 High.
5, 6, 7, 8, 9 i B ;None --- >6.0
Ascalon
--- --- >60 --- Moderate.
10
I A ;Frequent---- Brief Mar—Jun >6.0
Bankard --- --- ;. >60 --- Lou.
11 , 12
Are seer B :None --- -_- >6.0
--- --- I >60 --- Moderate.13 A ;None --- >6.0
)60
C ascajo --- --- ; --- Lou.
14, 15, 16, 17----; B
Colby ;None . --- >6.0 ' ---
---
--- ; >60 ; --- Lou.
Colby B None ; --- >6.0 ' --- --- ; >60 --- Low.
Adena
C None ; -__ >6.o , ---
--- , --- ; >60 --- ;Low.
19, 20 B Rare
Colombo -- --- --->6.0 ; --- ; >60
--- ;Moderate.
21, 22 C None ___
Dacono --- >6.0 --- --- >60 ---
;Low.
23, 24 B None to rare ---
Fort Collins --- >6.0 --- --- >60
--- ;Low.
25, 26 B Rare to Brief
liav er son common. May-Sep >6.0 � --- --- >60 --- Low.
�7, 28 C None
Heldt --- --- >6.0 --- --- >60 ;Low.
29, 30 A None __
Julesburg >6.0 --- --- >60 ;Moderate.
31 , 32, 33, 34---- B None
Kim ___ --- >6.0 --- ---
>60 --- ;Lou.
35*:
Loup D Rare to Brief Mar-Jun ♦.5-1.5;Apparent Nov-May >60 --- ;Moderate.
common.
Boel A Occasional Brief
Mar-Jun Apparent1.5-3.S; Nov-May >60 --- ;Moderate.
36*: ,
Midway ; D ;None ' ' t
--- 10-20 Rip- ;Low.
pable;
— See footnote at end of table.
i WELD COUNTY, COLORADO, SOUTHERN PART 133
f ' TABLE 14.--SOIL AND WATER FEATURES--Continued
Flooding I High water table 1 Bedrock 1
Soil name and Hydro- i i i i i i 1 Potential
map symbol logic Frequency I Duration ;Months Depth Kind ;Months ;Depth Hard- frost
group i i ness action
Ft In
__ 1 —
i i i
36*:
Shingle D None I --- i --- >6.0 --- --- 10-20 Rip- Low.
pable
1 37, 38 i B None --- >6.0 --- 1 --- 20-40 Rip- Low.
Nelson I ' pable
39, 40, 41, 42,
43 C None --- i --- 1 >6.0 ' --- >60 --- Moderate.
1 Nunn
a
'3 44, 45, 46, 47,
w48 ; B None --- i --- i >6.0 --- --- >60 --- Low.
Olney
__ --- --- --- ---
y9 A None - >6.0 >60 Low.
Osgood
50, 51 , 52, 53----� B None - 1 >6.0 >60 Low.
Otero
54, 55 ; B None to rare --- 1 --- 1 >6.0 --- --- >60 --- Moderate.
Paoli i 1
56, 57 C None --- >6.0 1 --- --- 20-40 Rip- Low.
Renohill i pable
I 58, 59 D None --- I --- >6.0 --- --- 10-20 Rip- Low.
Shingle pable
60*:
Shingle i D None --- --- >6.0 ; --- --- 10-20 Rip- Low.
pable
Renohill C None ---
--- >6.0 --- --- 20-40 Rip- Low.
gable
61 D None >6.0 --- --- 10-20 Rip- Low.
--- ---
Tassel pable
62, 63 B None ---
--- >6.0 --- --- 20-40 Rip- Low.
Terry i pable
64, 65 ; C None --- --- >6.0 --- --- 20-40 Rip- Low.
Thedalund pable
66, 67 I C None _-_ --- >6.0 --- --- >60 --- Low.
Ulm
68• A None --- >6.0 --- --- >60 --- Low.
---
Ustic
Torriorthents
i
69, 70 A None --- --- >6.0 --- --- >60 --- Low.
Valent
71*:
Valent A None --- --- >6.0 --- --- >60 --- Low.
Loup i D Rare to Brief Mar-Jun ..5-1.5 Apparent Nov-May >60 --- Moderate.
common.
72, 73, 74, 75, --- >60 --- Low.
.r': 76, 77 B None --- --- >6.0 ---
Vona
- / See footnote at end of table.
� Yet
Y
ly �:
.;x` .[1,4
Hello