HomeMy WebLinkAbout20001035.tiff ,S0 L15 ` tepor}
rf x" /try'11+ 4+jla { F h t aR / . Y",.o "1".`.
f Y, £ Fa..a 33 37 h ;v;
w (�J �; ' ,(' /.."'tY ! '� C .q `}.� \.. 4 '1uM" -Ta'&'' c*' ''4. A°1 ;
� (�)JrY� nt;t
.+'. .'•° 4 ,a �`'"' 'j 4}..14•P'pS�4ha � ('y ,y' ti '\ Jf. } 317
1:4""4 v r `/Al7 ,ems^' 1 A '� '� ','1,'"
ry". .
( a. a G.._. It___.__—_____,.4 .- t�'i4' ' z -').1,,,,7„;,.K.:v i4. 4C,? +m+t
�'."A Jr > t h 'i�`SZb"' d 4 '_' ,� �'— _ i f _± e.•bArt 3,kit iti.. rte-8, u.urns.w, .r.�kla
ti 0. l'., ? 1 t 1 t` 1 n' e° „,4,.;
ti• i P . ' wY r
'�, ja �c' ,tri t'yens, a a �v y V� 83 ty ; {fi
. . aJ 1 �srz Y m '- ,�` y �4 k .. fMe7. "9 ,z 1.k.
w ` i°f q'
1, .-- �ij_. °� k• Pa y aah Qg x
6Y ;If/ . Gy R 1 �i ^"4.-"4-;
� 'Q71 dc' ^„,.�aa>m�•ryr'Llr. � hM1" f 9' , 2r,
v t" � � '4 .;+ "Yt t' 47 •
.qW f Q ‘11•44.1,4......-
r 7 m4v :! a/ A M ;�H 4 �.
/ W '� ( F -�C ebr�. X EXTENSION t y
, � a�.1G) 5 t �, Goo NY ,, �_ 7 r 4 M ' , viY tta _ `U aS s Q_PS-y a, r :iX f-•1 tkto,�p 7 : 5
1,7
r 3rt Is w A.0'. r �,� 52r+wrs. 11!
f ty,,tea ^cc" •f _x/ 1X,e r, n ���aY""L��R a !RRls nil/. f 1� "`..`�..�.Y aF---•�vw �,�1y�,z� .Y }�,'�T ``s ,l' � ^P . t +*Xu�.• ,:s[ "tl-.y'41•L rsa�a. 1. + .. } ( e rg t ,w 66l 3 52 !'�'1ir,
2 4
F> e°� 47 f�\ .� AI,,,^ a ao I', . y, ^ ,:),Fir". -
A .0 }hY qto 1>. �,,>- ry ,4 ► S,h67 AhiYt 4p {y w .
kv s J. pu >+y .4 y ,( i °v Xs�' f' r CS
48 a b • ,t'. e r ti: y. ti4,1 :i' > l
"y 53 j s„ ' w
N
1'e � l} 1111111::;4191,
0 _ n,� .M" y;y,, a>_ uHvo "^s'a t::',A' ,trt ,,�,`� CyLy- ?rl 'Ya +.Y:i. � 4 ;Fp' 5+>40. , C 2Mi 1 ,. ,y ;r.�'f I4,1
c.Y v r 4 h��yV��', 'v. 4,.
�'x V o x°R > '79 s 11/4::
� S r
[ • 1 s
� 1. 20' ' . s. � �� . R.. x*
U ``
}}{.� 39 Yi \ L+ 1 �'5'`'� 4. cvW��T
EW ,} �a} 40 C 1. . "J,; EXHIBIT ?•s'q
�r k x 4,0 4 L,w f d 1
N e
I. ":� � r • 7�� 6 g 2000-1035
°4 ° A,
�•�` +1- �;:'..- . " a r' . :79'
��.. � 67 F-!I h GS2`o�i .
WELD COUNTY, COLORADO, SOUTHERN PART
These are deep, poorly drained soils that formed in If summer fallowed in alternate years, this soil is w,
recent alluvium. No one pedon is typical. Commonly the suited to winter wheat, barley, and sorghum. Wint
soils have a mottled, mildly to moderately alkaline loamy wheat is the principal crop. The predicted average yield
or clayey surface layer and underlying material that ex- .33bushels per acre. If the crop is winterkilled, sprit
tends to a depth of 60 inches or more. In places they have wheat can be seeded. Generally precipitation is too lc
a gleyed layer in the underlying material. for beneficial use of fertilizer.
Most of the acreage is subject to excessive runoff. The Stubble mulch farming, striperopping, and minimum t
water table is at or near the surface in spring and during lage are needed to control soil blowing and water erosi(
the peak of the irrigation season. Terracing also may be needed to control water erosion.
These soils are used for rangeland and wildlife habitat. The potential native vegetation on this range site
Some small areas are irrigated pasture. dominated by sand bluestem, sand reedgrass, and bl
The potential native vegetation is dominated by grama. Needleandthread, switchgrass, sideoats gran
switchgrass, prairie cordgrass, saltgrass, alkali sacaton, and western wheatgrass are also prominent. Potent
big bluestem, indiangrass, western wheatgrass, slender Production ranges from 2,200 pounds per acre in favoi
wheatgrass, sedge, and rush. Cattails and bullrush grow ble years to 1,800 pounds in unfavorable years. As ran
condition deteriorates, the sand bluestem, sand reedgra
in the swampy spots associated with these range sites.
Potential production ranges from 4,000 pounds per acre in and switchgrass decrease and blue grama, sand dropse,
favorable years to 3,000 pounds in unfavorable years. As and sand sage increase. Annual weeds and grasses inva
the site as range condition becomes poorer.
range condition deteriorates, the tall and mid grasses
Management of vegetation should be based on taki
decrease, production drops, and saltgrass, sedge, and rush half and leaving half of the total annual production. Set
increase. The farming and irrigation in adjacent areas has ing is desirable if the range is in poor condition. Sa.
increased the amount of salts on much of the acreage. bluestem, sand reedgrass, switchgrass, sideoats gran
Management of vegetation on this soil should be based blue grama, pubescent wheatgrass, and crested whe:
on taking half and leaving half of the total annual produc-
grass are suitable for seeding. The grass selected shot
tion. Switchgrass, big bluestem, indiangrass, western meet the seasonal requirements of livestock. It can
wheatgrass, pubescent wheatgrass, intermediate wheat- seeded into a clean, firm sorghum stubble, or it can
grass, tall wheatgrass, and tall fescue are suitable for drilled into a firm prepared seedbed. Seeding early
seeding. The plants selected should met the seasonal spring has proven most successful.
requirements of livestock. For successful seeding, a firm Windbreaks and environmental plantings are genera
prepared seedbed is needed. A grass drill should be used. suited to this soil. Soil blowing, the principal hazard
Seeding early in spring has proven most successful. Til- establishing trees and shrubs, can be controlled by ci
lage is needed to eliminate the undesirable vegetation. tivating only in the tree row and by leaving a strip
Wetland wildlife, especially waterfowl, utilize this unit. vegetation between the rows. Supplemental irrigati
The wetland plants provide nesting and protective cover may be needed at the time of planting and during d
as well as some food. The nearby irrigated cropland,g P periods. Trees that are best suited and have good surer
where wildlife obtain much of their food and find protec- are Rocky Mountain juniper, eastern redcedar, ponders
tive cover, makes this unit valuable to both wetland and pine, Siberian elm, Russian-olive, and hackberry. T
openland wildlife. shrubs best suited are skunkbush sumac, lilac, and Sibe
Openland wildlife, especially pheasant, use this unit for an peashrub.
cover and nesting. Deer find excellent cover in some Wildlife is an important secondary use of this soil. 'I
areas. These valuable wildlife areas should be protected cropland areas provide favorable habitat for ring-necli
from fire and fenced to prevent encroachment and pheasant and mourning dove. Many nongame species c
overuse by livestock. They should not be drained. Capa- be attracted by establishing areas for nesting and escf
bility subclass VIw; Aquolls in Salt Meadow range site, cover. For pheasants, undisturbed nesting cover is essi
Aquepts in Wet Meadow range site. tial and should be included in plans for habitat devel
5—Ascalon sandy loam, 1 to 3 percent slopes. This is ment. Rangeland wildlife, for example, the pronghorn
a deep, well drained soil on uplands at elevations of 4,600 telope, can be attracted by developing livestock water
to 5,200 feet. It formed in alluvium. Included in mapping facilities, managing livestock grazing, and reseed
are small areas of rock outcrop. where needed.
Typically the surface layer is brown sandy loam about Few areas of this Ascalon soil are in major growth
10 inches thick. The subsoil is pale brown and yellowish urbanized centers. The shrink-swell potential of the s
brown sandy clay loam about 15 inches thick. The sub- soil as it wets and dries is the most limiting soil feat
li stratum to a depth of 60 inches is calcareous fine sandy that must be considered in planning homesites and c
loam. structing roads. Capability subclass IIIe nonirrigat
I Permeability is moderate. Available water capacity is Sandy Plains range site.
high. The effective rooting depth is 60 inches or more. 6—Ascalon sandy loam, 3 to 5 percent slopes. Thi;
Surface runoff is slow, and the erosion hazard is low. a deep, well drained soil on uplands at elevations of 4,
I
1
I
I
I
I
8 SOIL SURVEY
-- filter the leachate. Sewage lagoons require sealing. 00 percent of the unit. Aquents, which have a lighter
Lawns, shrubs, and trees grow well. Capability subclass colored surface layer, make up about 35 percent. About 5
Its irrigated. percent is Aquepts and Bankard sandy loam.
2—Altvan loam, I to 3 percent slopes. This is a deep, These are deep, poorly drained soils that formed in
well drained soil on terraces at elevations of 4,500 to 4,900 recent alluvium. No one pedon is typical. Commonly the
feet. It formed in old alluvium deposited by the major soils have a mottled, mildly alkaline to moderately al-
rivers. Included in mapping are small areas of soils that kaline loamy or clayey surface layer and underlying
show evidence of poor drainage. Also included are small, material and are underlain by sand or sand and gravel
long and narrow areas of sand and gravel deposits. within 48 inches.In places they have a gleyed layer in the
Typically the surface layer of this Altvan soil is grayish underlying.material
brown loam about 10 inches thick. The subsoil is brown Most of the acreage is subject to flooding. The water
and light yellowish brown clay loam and sandy clay loam table is at or near the surface early in spring and recedes
about 14 inches thick. The substratum is calcareous loamy to as deep as 48 inches late in fall in some years.
sand about 5 inches thick over gravelly sand. These soils are used for rangeland and wildlife habitat.
Permeability and available water capacity are Some small areas have been reclaimed by major drainage
moderate. The effective rooting depth is 20 to 40 inches. and leveling and are used for irrigated crops.
Surface runoff is medium, and the erosion hazard is low. The potential native vegetation is dominated by alkali
This soil is used almost entirely for irrigated crops. It sacaton, switchgrass, and western wheatgrass. Saltgrass,
is suited to all crops commonly grown in the area, includ- sedge, rush, and alkali bluegrass are also prominent.
ing corn, sugar beets, beans, alfalfa, small grain, potatoes, Potential production ranges from 3,000 pounds per acre in
and onions. An example of a suitable cropping system is 3 favorable years to 2,000 pounds in unfavorable years. As
to 4 years of alfalfa followed by corn, corn for silage, range condition deteriorates, the switchgrass, alkali
sugar beets, small grain, or beans. Land leveling, ditch sacaton, and western wheatgrass decrease and saltgrass,
lining, and installing pipelines may be needed for proper sedge, and rush increase.
water application. Management of vegetation should be based on taking
All methods of irrigation are suitable, but furrow ir- half and leaving half of the total annual production. Seed-
rigation is the most common. Barnyard manure and com- ing is difficult and costly because numerous tillage prac-
mercial fertilizer are needed for top yields. tices are required to eliminate the saltgrass sod.
Windbreaks and environmental plantins of trees and Switchgrass, western wheatgrass, alkali sacaton, tall
shrubs commonly grown in the area are are generally well wheatgrass, and tall fescue are suitable for seeding. They
suited to this soil. Cultivation to control competing can be seeded into a clean, firm seedbed. Seedbed
vegetation should be continued for as many years as preparation usually requires more than 1 year to
possible following planting. Trees that are best suited and eliminate the saltgrass sod. A grass drill should be used.
have good survival are Rocky Mountain juniper, eastern Seeding early in spring has proven most successful.
redcedar, ponderosa pine, Siberian elm, Russian-olive, and Wetland wildiife, especially waterfowl, utilize this unit.
hackberry. The shrubs best suited are skunkbush sumac, The wetland plants provide nesting and protective cover,
lilac, Siberian rian peashrub, and American plum. as well as some food. The nearby irrigated cropland,
This soil can produce habitat elements that are highly where wildlife obtain much of their food and find suitable for openland wildlife including pheasant, protec-
tail, cotton-
and mourning dove. Such crops as wheat, corn, and tive cover, makes this unit valuable to both wetland and
alfalfa provide suitable habitat for openland wildlife, openland wildlife.
especially pheasant. Tree and shrub plantings and Openland wildlife, especially pheasant, use this unit for
undisturbed nesting cover would enhance openland wil- cover and nesting. Deer find excellent cover in some
areas.
dlife populations. These valuable wildlife areas should be protected from
This Altvan a soil elo me to The eod chief limiting
for urban
and recreational development. limiting soil fea- fire and fenced to prevent encroachment and overuse by
tures for urban development are the shrink-swell poten- livestock. They should not be drained.
tial of the subsoil as it wets and dries and the rapid These soils have good potential as a source of sand and
permeability of the sand and gravel substratum. Septic g 1. Capability subclass VIw; Salt Meadow range site.
tank absorption fields function properly, but in places the 4 Aquolls and Aquepts, flooded. This nearly level
substratum does not contain enough fines to properly map unit is in depressions in smooth plains and along the
filter the leachate. Sewage lagoons require sealing. bottoms of natural drainageways throughout the survey
Lawns, shrubs, and trees grow well. Capability subclass area. Aquolls, which have a dark colored surface layer,
Ile irrigated. make up about 55 percent of the unit. Aquepts, which
3—Aquolls and Aquents, gravelly substratum. This have a lighter colored surface layer, make up about 25
_ nearly level map unit is on bottom lands and flood plains percent. About 20 percent is soils that are well drained
of all the major streams in the survey area. Aquolls, and soils that have sandstone or shale within 48 inches of
which have a dark colored surface layer, make up about the surface.
14
SOIL SURVEY
ing corn, sugar beets, beans, alfalfa, small grain, The potential native vegetation is dominated by blue
potatotes, and onions. An example of a suitable cropping grama. Several mid grasses, such as western wheatgrass
system is 3 to 4 years of alfalfa followed by corn, corn for and needleandthread, are also present. Potential produc-
silage, sugar beets, small grain, or beans. Few conserva- tion ranges from 1,600 pounds per acre in favorable years
tion practices are needed to maintain top yields. - - to 1,000 pounds in unfavorable years. As range condition
All methods of irrigation are suitable, but furrow ir- deteriorates, the mid grasses decrease; blue grama, buf-
rigation is the most common. Barnyard manure and com- falograss, snakeweed, yucca, and fringed sage increase;
mercial fertilizer are needed for top yields. and forage production drops. Undesirable wees and an-
Windbreaks and environmental plantings of trees and nuals invade the site as range condition becomes poorer.n
shrubs commonly grown in the area are generally well Management of vegetation on this soil should be based
suited to this soil. Cultivation to control competing on taking half and leaving half of the total annual produc-
vegetation should be continued for as many years as tion. Seeding is desirable if the range is in poor condition.
possible following planting. Trees that are best suited and Sideoats grama, little bluestem, western wheatgrass, blue
have good survival are Rocky Mountain juniper, eastern grama, pubescent wheatgrass, and crested wheatgrass are
redcedar, ponderosa pine, Siberian elm, Russian-olive, and suitable for seeding. The grass selected should meet the
hackberry. The shrubs best suited are skunkbush sumac, seasonal requirements of livestock. It can be seeded into
lilac, Siberian peashrub, and American plum. a clean, firm sorghum stubble or it can be drilled into a
Openland wildlife, such as pheasant, mourning dove, firm prepared seedbed. Seeding early in spring has
and cottontail, are best suited to this soil. Wildlife habitat proven most successful.
development, including tree and shrub plantings and Windbreaks and environmental plantings of trees and
grass plantings to serve as nesting areas, should be sue- shrubs commonly grown in the area are generally well
cessful without irrigation during most years. Under ir- suited to this soil. Cultivation to control competing
rigation, good wildlife habitat can be established, benefit- vegetation should be continued for as ing many kinds of openland wildlife. possible following many years as
This soil hasgood have planting. Trees that are best suited and
potential for urban and recreational good survival are Rocky Mountain juniper, eastern
developments. Road design can be modified to compen- redcedar, ponderosa pine, Siberian elm, Russian-olive, and
sate for the limited capacity of this soil to support a load.- hackberry. The shrubs best suited are skunkbush sumac,
C. bility class I irrigated. lilac, Siberian peashrub, and American plum.
1 Colby loam, 1 to 3 percent slopes. This is a deep, Openland wildlife, such as pheasant, mourning dove,
drained soil on uplands at elevations of 4,850 to 5,050 and cottontail, and rangeland wildlife, such as antelope,
eet. It formed in calcareous eolian deposits. cottontail, and coyote, are best suited to this soil. Under
Typically the surface layer is pale brown loam about 12 irrigation, good wildlife habitat can be established,
inches thick. The underlying material is very pale brown benefiting many kinds of openland wildlife. Forage
production is typically low on rangeland, and grazing
silt loam to a depth of 60 inches.
management is needed if livestock and wildlife share the
Permeability is moderate. Available water capacity is
. 60 inches- or more. range. Livestock watering facilities also are utilized by
high. The effective rooting depth is
Surface runoff is medium, and the erosion hazard is various wildlife species.
moderate. This soil has good potential for urban and recreational
In irrigated areas this soil is suited to all crops com- development. Road design can be modified to compensate
for the limited capacity of this soil to support a load.
monly grown in the area, including corn, sugar beets,
beans, alfalfa, small grain, potatoes, and onions. An exam- Capability Py subclass Ile irrigated, IVe nonirrigated;
ple of a suitable cropping system is 3 to 4 years of alfalfa Loamy Plains range site.
followed by corn, corn for silage, sugar beets, small grain, 16—Colby l drained
sloil on 3 uplandto 5 percent and ridges d This is a deep,
or beans. Land leveling, ditch lining, and installing well 5 Soil hills r in at e elevations
pipelines may be needed for proper water application. of ot to 5ded feet. It formed calcareous soils eolian
All methods of irrigation are suitable, but furrow ir- deposits.fnI sandy
loam in mapping are n areas material. that
rigation is the most common. Barnyard manure and com- have fine Typically the or loam is underlying brown r loam
mercial fertilizer are needed for top yields. ic the surface layer is pale about 10
In nonirrigated areas this soil is suited to winter wheat, inches thick. The underlying material is very pale brown
barley, and sorghum. Most of the acreage is planted to silt loa o a as of 60er inches.
winter wheat. The predicted averagePermeability h is moderate.depth
is sle water capacity is
.
per acre. The soil is summer fallowed in yield alternate years s high. The effective medium rooting depth 60 t inches or more.
to allow moisture accumulation. Generally precipitation is sumoderaterface �ffis to rapid, and the erosion hazard
too low for beneficial use of fertilizer. In irrigated areas this soil is suited to crops commonly
Stubble mulch farming, striperopping, and minimum til- grown in the area. Perennial grasses and alfalfa or close
lage are needed to control soil blowing and water erosion. grown crops should be grown at least 50 percent of the
Terracing may also be needed to control water erosion. time. Contour ditches and corrugations can be used in ir-
28 SOIL SURVEY
lY Nunn loam, 1 to 3 percent slopes. This is a deep, vegetation should be continued for as many years as
well drained soil on terraces at elevations of 4,550 to 5,000 possible following planting. Trees that are best suited and
feet. It formed in mixed alluvium. Included in mapping have good survival are Rocky Mountain juniper, eastern
are small, long and narrow areas of sand and gravel redcedar, ponderosa pine, Siberian elm, Russian-olive, and
deposits and small areas of soils that are subject to occa- hackberry. The shrubs best suited are skunkbush sumac,
sional flooding. Some leveled areas are also included. lilac, Siberian peashrub, and American plum.
Typically the surface layer of this Nunn soil is grayish Wildlife is an important secondary use of this soil. The
brown loam about 12 inches thick. The subsoil is light cropland areas provide favorable habitat for ring-necked
brownish gray clay loam about 12 inches thick. The upper pheasant and mourning dove. Many nongame species can
part of the substratum is light brownish gray clay loam. be attracted by establishing areas for nesting and escape
The lower part to a depth of 60 inches is brown sandy cover. For pheasants, undisturbed nesting cover is essen-
loam. tial and should be included in plans for habitat develop-
Permeability is moderately slow. -Available water ment, especially in areas of intensive agriculture. Range-
capacity is high. The effective rooting depth is 60 inches land wildlife, for example, the pronghorn antelope, can be
or more. Surface runoff is medium, and the erosion attracted by developing livestock watering facilities,
hazard is low. managing livestock grazing, and reseeding where needed.
In irrigated areas this soil is suited to all crops com- This soil has fair to poor potential for urban develop-
monly grown in the area, including corn, sugar beets, ment. It has moderate to high shrink swell, low strength,
beans, alfalfa, small grain, potatoes, and onions. An exam- and moderately slow permeability. These features create
ple of a suitable cropping system is 3 to 4 years of alfalfa problems in dwelling and road construction. Those areas
followed by corn, corn for silage, sugar beets, small grain, that have loam or sandy loam in the lower part of the
or beans. Generally such characteristics as a high clay substratum are suitable for septic tank absorption fields
content or a rapidly permeable substratum slightly and foundations. Some areas of this soil are adjacent to
restrict some crops. streams and are subject to occasional flooding. The poten-
All methods of irrigation are suitable, but furrow ir- tial is fair for such recreational development as camp and
rigation is the most common. Proper irrigation water picnic areas and playgrounds. Capability subclass Ile ir-
management is essential. Barnyard manure and commer- rigated, IIIc nonirrigated; Loamy Plains range site.
cial fertilizer are needed for top yields. 41—Nunn clay loam, 0 to 1 percent slopes. This is a
Most nonirrigated areas are used for small grain. The deep, well drained soil on terraces and smooth plains at
soil is summer fallowed in alternate years. Winter wheat elevations of 4,550 to 5,150 feet. It formed in mixed allu-
is the principal crop. If the crop is winterkilled, spring vium and eolian deposits. Included in mapping are small,
wheat can be seeded. Generally precipitation is too low long and narrow areas of sand and gravel deposits and
for beneficial use of fertilizer. small areas of soils that are subject to occasional flooding.
Such practices as stubble mulch farming, striperopping, Some small leveled areas are also included.
and-minimum tillage are needed to control soil blowing Typically the surface layer of this Nunn soil is grayish
and water erosion. brown clay loam about 9 inches thick. The subsoil is light
- The potential native vegetation is dominated by blue brownish gray clay loam about 14 inches thick. The upper
grama. Several mid grasses, such as western wheatgrass part of the substratum is clay loam. The lower part to a
and needleandthread, are also present. Potential produc- depth of 60 inches is sandy loam.
tion ranges from 1,600 pounds per acre in favorable years Permeability is moderately slow. Available water
to 1,000 pounds in unfavorable years. As range condition capacity is high. The effective rooting depth is 60 inches
deteriorates, the mid grasses decrease; blue grama, but.- or more. Surface runoff is slow, and the erosion hazard is
falograss, snakeweed, yucca, and fringed sage increase; low.
and forage production drops. Undesirable weeds and an- This soil is used almost entirely for irrigated crops. It
nuals invade the site as range condition becomes poorer. is suited to all crops commonly grown in the area, includ-
Management of vegetationon this soil should be based ing corn, sugar beets, beans, alfalfa, small grain, potatoes,
on taking half and leaving half of the total annual produc- and onions. An example of a suitable cropping system is 3
tion. Seeding is desirable if the range is in poor condition. to 4 years of alfalfa followed by corn, corn for silage,
Sideoats grama, little bluestem, western wheatgrass, blue sugar beets, small grain, or beans. Few conservation prac-
grama, pubescent wheatgrass, and crested wheatgrass are tices are needed to maintain top yields.
suitable for seeding. The grass selected should meet the All methods of irrigation are suitable, but furrow ir-
seasonal requirements of livestock. It can be seeded into rigation is the most common. Barnyard manure and com-
a clean, firm sorghum stubble, or it can -be drilled into a mercial fertilizer are needed for top yields.
firm prepared seedbed. Seeding early in spring has Windbreaks and environmental plantings of trees and
proven most successful, shrubs commonly grown in the area are generally well
Windbreaks and environmental plantings of trees and suited to this soil. Cultivation to control competing
— shrubs commonly grown in the area are generally well vegetation should be continued for as many years as
suited to this soil. Cultivation to control competing possible following planting. Trees that are best suited and
V, a COUNTY, COLORADO, SOUTHERN PAR'I 29
have good survival are Rocky Mountain juniper, eastern The potential native vegetation is dominated by
redcedar, ponderosa pine, Siberian elm, Russian-olive, and western wheatgrass and blue grama. Buffalograss is also
ackberry. The shrubs best suited are skunkbush sumac, present. Potential production ranges from 1,000 pounds
.,lac, Siberian peashrub, and American plum. per acre in favorable years to 600 pounds in unfavorable
Wildlife is an important secondary use of this soil. The years. As range condition deteriorates, a blue grama-buf-
cropland areas provide favorable habitat for ring-necked falograss sod forms. Undesirable weeds and annuals in-
pheasant and mourning dove. Many nongame species can vade the site as range condition becomes poorer.
be attracted by establishing areas for nesting and escape Management of vegetation of this soil should be based
cover. For pheasants, undisturbed nesting cover is essen- on taking half and leaving half of the total annual produc-
tial and should be included in plans for habitat develop- tion. Range pitting can help in reducing runoff. Seeding is
ment, especially in areas of intensive agriculture. desirable if the range is in poor condition. Western
This soil has fair to poor potential for urban develop- wheatgrass, blue grama, sideoats grama, buffalograss, pu-
ment. It has moderate to high shrink swell, low strength, bescent wheatgrass, and crested wheatgrass are suitable
and moderately slow permeability. These features create for seeding. The grass selected should meet the seasonal
problems in dwelling and road construction. Those areas requirements of livestock. It can be seeded into a clean,
that have loam or sandy loam in the lower part of the firm sorghum stubble, or it can be drilled into a firm
substratum are suitable for septic tank absorption fields prepared seedbed. Seeding early in spring has proven
and foundations. Some areas of this soil are adjacent to most successful.
streams and are subject to occasional flooding. The poten- Windbreaks and environmental plantings are generally
tial is fair for such recreational development as camp and well suited to this soil. Cultivation to control competing 0pie c areas and playgrounds. Capability class I irrigated. vegetation should be continued for as many years as
42 Nunn clay loam, 1 to 3 percent slopes. This is a possible following planting. Trees that are best suited and
p, well drained soil on terraces and smooth plains at have good survival are Rocky Mountain juniper, eastern
elevations of 4,550 to 5,150 feet. It formed in mixed allu- redcedar, ponderosa pine, Siberian elm, Russian-olive,-and
vium and eolian deposits. Included in mapping are small, hackberry. The shrubs best suited are skunkbush sumac,
long and narrow areas of sand and gravel deposits and lilac, Siberian peashrub, and American plum.
small areas of soils that are subject to occasional flooding. Wildlife is an important secondary use of this soil. The
Some leveled areas are also included. cropland areas provide favorable habitat for ring-necked
Typically the surface layer of this Nunn soil is grayish pheasant and mourning dove. Many nongame species can
,_ brown clay loam aobut 9 inches thick. The subsoil is light be attracted by establishing areas for nesting and escape
brownish gray clay loam about 14 inches thick. The upper cover. For pheasants, undisturbed nesting cover is essen-
part of the substratum is light brownish gray clay loam. tial and should be included in plans for habitat develop-
The lower part to a depth of 60 inches is brown sandy ment, especially in areas of intensive agriculture., Range-
loam. land wildlife, for example, the pronghorn antelope, can be
Permeability is moderately slow. Available water attracted by developing livestock watering facilities,
capacity is high. The effective rooting depth is 60 inches managing livestock grazing, and reseeding where needed.
or more. Surface runoff is medium, and the erosion This soil has fair to poor potential for urban develop-
hazard is low. ment. It has moderate to high shrink swell, low strength,
In irrigated areas this soil is suited to all crops com- and moderately slow permeability. These features create
monly grown in the area, including corn; sugar beets, problems in dwelling and road construction. Those areas
beans, alfalfa, small grain, potatoes, and onions. An exam- that have loam or sandy loam in the lower part of the
pre of a suitable cropping system is 3 to 4 years of alfalfa substratum are suitable for septic tank absorption fields
followed by corn, corn for silage, sugar beets, small grain, and foundations. Some areas of this soil are adjacent to
or beans. Generally such characteristics as the high clay streams and are subject to occasional flooding. The poten-
content or the rapidly permeable substratum slightly tial is fair for such recreational development as camp and
restrict some crops. picnic areas and playgrounds. Capability subclass IIe ir-
All methods of irrigation are suitable, but furrow ir- rigated, IIIc nonirrigated; Clayey Plains range site.
rigation is the most common. Proper irrigation water 43—Nunn loamy sand, 0 to 1 percent slopes. This is a
management is essential. Barnyard manure-andcommer- deep, well drained soil on terraces at elevations of 4,700
cial fertilizer are needed for top yields. to 4,900 feet. It formed in alluvium along Box Elder
In nonirrigated areas most of the acreage is in small Creek. Included in mapping are small areas of soils that
grain and it is summer fallowed in alternate years. have a loamy subsoil and small areas of soils that are sub-
Winter wheat is the principal crop. The predicted average ject to rare flooding.
yield is 33 bushels per acre. If the crop is winterkilled, Typically the surface layer of this Nunn soil is brown
spring wheat can be seeded. Generally precipitation is too loamy sand overburden about 9 inches thick. The subsoil
low for beneficial use of fertilizer., is dark to very dark grayish brown clay loam about 21
Stubble mulch farming, striperopping, and minimum til- inches thick. The substratum to a depth of 60 inches is
— lage are needed to control soil blowing and water erosion. loamy very fine sand, loamy sand, or sand.
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 grasses invade
Wildlife is an important secondary use of this soil. The the site as range condition becomes poorer.
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 selected should meet the
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-
cla I irrigated. tivating only in the tree row and by leaving a strip of
4 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 corn- attracted by developing livestock watering facilities,
mohly 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
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
52 SOIL SURVEY
the limited capacity of this soil to support a load. Capa- Management of vegetation on this soil should be based
bi ' class I irrigated. on taking half and leaving half of the total annual produc-
8 Wiley-Colby complex, 1 to 3 percent slopes. This tion. Seeding is desirable if the range is in poor condition.
nearly level map unit is on smooth plains in the western Sideoats grama, little bluestem, western wheatgrass, blue
part of the survey area at elevations of 4,850 to 5,000 grama, pubescent wheatgrass, and crested wheatgrass are
feet. The Wiley soil makes up about 60 percent of the suitable for seeding. The grass selected should meet the
unit, and the Colby soil about 30 percent. About 10 per- seasonal requirements of livestock. It can be seeded into
cent is Heldt silty clay and Weld loam. a clean, firm sorghum stubble or it can be drilled into a
The Wiley soil is deep and well drained. It formed in firm prepared seedbed. Seeding early in spring has
calcareous eolian deposits. Typically the surface layer is proven most successful.
pale brown silt loam about 11 inches thick. The subsoil is Windbreaks and environmental plantings are generally
pale brown silty clay loam about 23 inches thick. The sub- well suited to these soils. Cultivation to control competing
stratum to a depth of GO inches is very pale brown silty vegetation should be continued for as many years as
clay loam. possible following planting. Trees that are best suited and
Permeability is moderately slow. Available water have good survival are Rocky Mountain juniper, eastern
capacity is high. The effective rooting depth is 60 inches redcedar, ponderosa pine, Siberian elm, Russian-olive, and
or more. Surface runoff is medium, and the erosion hackberry. The shrubs best suited are skunkbush sumac,
hazard is moderate. - lilac, Siberian peashrub, and American plum.
The Colby soil also is deep and well drained and formed Openland wildlife, such as pheasant, mourning dove,
in calcareous eolian deposits. Typically the surface layer and cottontail are best suited to these soils. Wildlife
is pale brown loam about 7 inches thick. The underlying habitat development, including tree and shrub plantings
material is very pale brown silt loam to a depth of 60 and grass plantings to serve as nesting areas, should be
inches. successful without irrigation during most years. Under ir-
Permeability is moderate. Available water capacity is rigation, good wildlife habitat can be established, benefit-
high. The effective rooting depth is 60 inches or more. ing many kinds of openland wildlife.
Surface runoff is medium, .and the erosion hazard is The Wiley soil has only fair potential for urban and
moderate. recreational development. Slow permeability, moderate
This map unit is used for irrigated and nonirrigated shrink-swell potential, and limited bearing capacity cause
cropland and for rangeland, wildlife habitat, and urban problems in dwelling and road construction. The Colby
development. soil has good potential for urban and recreational develop-
In irrigated areas these soils are suited to all crops ment. Road design can be modified to compensate for the
commonly grown in the area, including corn, sugar beets, limited capacity of this soil to support a load. Capability
beans, alfalfa, small grain, and onions. An example of a subclass IIe irrigated, IVe nonirrigated; Loamy Plains
suitable cropping system is 3 to 4 years of alfalfa fol- range site.
lowed by corn, corn for silage, sugar beets, small grain, or 83—Wiley-Colby complex, 3 to 5 percent slopes. This
beans. Land leveling, ditch lining, and installing pipelines gently sloping map unit is on plains at elevations of 4,850
may be needed for proper water applications. to 5,000 feet. The Wiley soil makes up about 60 percent of
All methods of irrigation are suitable, but furrow ir- the unit, and the Colby soil about 30 percent. About 10
rigation is the most common. Barnyard manure and com- percent is Heldt silty clay and Weld loam.
mercial fertilizer are needed for top yields. The Wiley soil is deep and well drained. It formed in
In nonirrigated areas these soils are suited to winter calcareous eolian deposits. Typically the surface layer is
wheat, barley, and sorghum. Most of the acreage is pale brown silt loam about 11 inches thick. The subsoil is
planted to winter wheat. The predicted average yield is pale brown silty clay loam about 23 inches thick. The sub-
28 bushels per acre. The soil is summer fallowed in al- stratum to a depth of 60 inches is very pale brown silty
ternate years to allow moisture accumulation. Generally clay loam.
precipitation is too low for beneficial use of fertilizer. Permeability is moderately slow. Available water
Stubble mulch farming, striperopping, and minimum til- capacity is high. The effective rooting depth is GO inches
lage are needed to control soil blowing and water erosion. or more. Surface runoff is medium to rapid, and the ero-
Terracing also may be needed to control water erosion. sion hazard is moderate.
The potential native vegetation is dominated by blue The Colby soil also is deep and well drained and formed
grama. Several mid grasses such as western wheatgrass in calcareous eolian deposits. Typically the surface layer
and needleandthread are also present. Potential produc- is pale brown loam about 7 inches thick. The underlying
tion ranges from 1,600 pounds per acre in favorable years material is very pale brown silt loam to a depth of GO
to 1,000 pounds in unfavorable years. As range condition inches.
deteriorates, the mid grasses decrease; blue grama, buf- Permeability is moderate. Available water capacity is
falograss, snakeweed, yucca and fringed sage increase; high. The effective rooting depth is GO inches or more.
and forage production drops. Undesirable weeds and an- Surface runoff is medium to rapid, and the erosion hazard
nuals invade the site as range condition becomes poorer. is moderate.
100 SOIL SURVEY
TABLE 6.--BUILDING SITE DEVELOPMENT
[Some of the terms used in this table to describe restrictive soil features are defined in the Glossary. See
text for definitions of "slight," "moderate," and "severe." Absence of an entry means soil was not
rated]
Soil name and Shallow Dwellings Dwellings Small Local roads
map symbol excavations without with commercial and streets
basements basements buildings
1 , 2 Severe: Moderate: - Moderate: Moderate: Moderate:
Altvan cutbanks cave. shrink-swell. shrink-swell. shrink-swell. shrink-swell ,
frost action.
3*:
Aquolls Severe: Severe: Severe: Severe: Severe:
floods, floods, floods, floods, floods,
wetness. wetness. wetness. wetness. wetness,
frost action.
Aquents Severe: . . . Severe: Severe: Severe: Severe:
floods, floods, floods, floods, floods,
wetness. wetness. wetness. wetness. wetness,
frost action.
Situolls
Severe: Severe: Severe: Severe: Severe:
floods, floods, floods, floods, floods,
wetness. wetness. wetness. wetness. wetness,
frost action.
Aquepts Severe: Severe: Severe: Severe: Severe:
floods, floods, floods, floods, floods,
wetness. wetness. wetness. wetness. wetness,
frost action.
5 Slight Moderate: Moderate: Moderate: Moderate:
Ascalon low strength. low strength. low strength. frost action,
low strength.
6, 7 Slight Moderate: Moderate: Moderate: Moderate:
Ascalon low strength. low strength. slope, frost action,
low strength. low strength.
8, Q Slight Moderate: Moderate: Moderate: Moderate:
Ascalon low strength. low strength. low strength. frost action,
low strength.
10 Severe: Severe: Severe: Severe: Severe:
Bankard cutbanks cave, floods. floods. floods. floods.
floods.
11 , 12 Slight Slight Slight Slight Moderate:
Bresser - - - - - frost action.
13 Severe: Moderate: Moderate: Severe: Moderate:
Cascajo cutbanks cave, slope. slope. slope. slope.
///111 small stones.
14,5 Slight Slight Slight Slight. Moderate:
Co low strength.
16, 17 Slight Slight Slight Moderate: Moderate:
Colby . slope. low strength.
18*:
Colby Slight Slight Slight Moderate: Moderate:
slope. low strength.
Adena Slight Moderate: Moderate: Moderate: Moderate:
low strength. low strength. low strength, low strength.
slope.
See footnote at end of table.
N. ) COUNTY, COLORADO, SOUTHERN PART 101
TABLE 6.--BUILDING SITE DEVELOPMENT--Continued
Soil name and Shallow ; Dwellings Dwellings Small Local roads
_. map symbol excavations without with , commercial and streets
basements basements buildip s
19 Moderate: :Severe: Severe: Severe: Severe:
Colombo floods, i 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:
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.
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, 34 Slight Moderate: Moderate: Moderate: Moderate:
Kim low strength. low strength. low strength, low strength.
slope.
Y#.
>up 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, 1 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.
low strength.
Shingle Severe: Severe: Severe: Severe: Severe:
depth to rock. depth to rock. depth to rock. depth to rock, depth to rock.
slope.
37 Severe: Moderate: - - Severe: Moderate: Moderate:
Nelson depth to rock, depth to rock, depth to rock. depth to rock, depth to rock,
low strength. low strength. low strength.
38 Severe: Moderate: Severe: Moderate: Moderate:
Nelson depth to rock. depth to rock, depth to rock. slope, depth to rock,
low strength. depth to rock, low strength.
low strength.
39, 40 41 , 42
43 Moderate: - - Severe: - - Severe: Severe: Severe:
Nunn too clayey. shrink-swell , shrink-swell, shrink-swell , shrink-swell,
low strength. low strength. low strength. low strength.
See footnote at end of table.
102 SOIL SURVEY
TABLE 6.--BUILDING SITE DEVELOPMENT--Continued
-r-
Soil name and Shallow Dwellings Dwellings Small Local roads
map symbol excavations without with commercial and streets
basements basements buildings
44 ;Slight Slight Slight Slight Moderate:
Olney low strength.
45 Slight Slight Slight Moderate: Moderate:
Olney slope. low strength.
46,01 Slight Slight Slight Slight Moderate:
01 low strength.
48 Slight Slight Slight Moderate: Moderate:
Olney --- - - slope. low strength.
49 Severe: Slight Slight Slight Slight.
Osgood cutbanks cave.
50, 51 Slight Slight Slight Slight Slight.
Otero
52, 53 Slight Slight Slight Moderate: Slight.
Otero slope.
54 Slight Severe: Severe: Severe: Moderate:
Paoli floods. floods. floods. low strength,
frost action.
55 Slight Slight Slight Slight Moderate:
Paoli low strength,
frost action.
56 Moderate: Moderate: Moderate: Moderate: Severe:
Renohill depth to rock, low strength, low strength, low strength, low strength,
too clayey. shrink-swell. depth to rock, shrink-swell. shrink-swell.
" shrink-swell.
57 Moderate: Moderate: Moderate: Moderate: Severe:
Renohill depth to rock, low strength, low strength, slope, low strength,
too clayey. shrink-swell. depth to rock, low strength, shrink-swell.
shrink-swell. shrink-swell.
58, 59 Severe: Severe: Severe: Severe: Severe:
Shingle depth to rock. depth to rock. depth to rock. depth to rock. depth to rock.
60*:
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 strenli h,
too clayey. shrink-swell. depth to rock, low strength, shrink-sw{._1.
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.
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.
. W JSLD COUNTY, COLORADO, SOUTHERN PART 103
TABLE 6.--BUILDING SITE DEVELOPMENT--Continued
Soil name and Shallow Dwellings ; Dwellings Small Local roads
map symbol excavations I without with commercial and streets
basements basements buildings
66, 67 Moderate: ;Severe: Severe: Severe: Severe:
Ulm too clayey. ; shrink-swell. shrink-swell. shrink-swell. low strength,
shrink-swell.
68* Severe: Moderate: Moderate: Moderate: Moderate:
Ustic small stones, slope. slope. slope. slope.
Torriorthents cutbanks cave.
69 Severe: Slight Slight Slight Slight.
Valent cutbanks cave.
70 Severe: Slight Slight Moderate: Slight.
Valent cutbanks cave. - - slope.
71*:
Valent Severe: Slight Slight Moderate: Slight.
cutbanks cave. slope.
Loup Severe: Severe: Severe: Severe: Severe:
wetness, wetness, wetness, wetness, wetness.
cutbanks cave. floods. floods. floods.
72 Slight Slight Slight Slight Moderate: -
Vona - - - low strength.
73, 74 Slight Slight Slight Moderate: Moderate:
Vona slope. low strength!
75, 76 Slight Slight Slight Slight Moderate:
Vona low strength.
77 Slight Slight Slight Moderate: Moderate:
'ona slope. low strength.
i8, 79 Slight Moderate: Moderate: Moderate: Moderate:
Weld low strength, low strength, low strength, low strength,
shrink-swell. shrink-swell . shrink-swell. shrink-swell ,
frost action.
80 Slight Moderate: Moderate: Moderate: Moderate:
Weld i low strength, low strength, low strength, low strength,
shrink-swell. shrink-swell. slope, shrink-swell ,
shrink-swell. 1 frost action.
81* 82 :
Wil Slight Moderate: Moderate: Moderate: Moderate:
low strength, low strength, low strength, low strength,
shrink-swell. shrink-swell. shrink-swell. shrink-swell.
Colby Slight Slight Slight Slight Moderate:
low strength.
83*:
Wiley Slight Moderate: Moderate: Moderate: Moderate:
low strength, low strength, low strength, low strength,
shrink-swell. shrink-swell. slope, shrink-swell.
shrink-swell.
Colby Slight Slight Slight Moderate: Moderate:
slope. low strength.
* See map unit description for the composition and behavior of the map unit.
104 SOIL SURVEY
- - TABLE 7.--SANITARY FACILITIES
[Some of the terms used in this table to describe restrictive soil features are defined in the Glossary. See
text for definitions of "slight," "moderate," "good," "fair," and other terms used to rate soils.
Absence of an entry means soil was not rated]
--
Soil name and Septic tank Sewage lagoon Trench Area Daily cover
map symbol absorption areas sanitary sanitary for landfill
fields __ landfill landfill
1 , 2 Slight Severe: Severe: Slight Fair:
Altvan seepage. seepage. thin layer.
3*:
Aquolls Severe: Severe: Severe: Severe: Poor:
floods, floods, floods, wetness. wetness.
wetness. wetness. wetness.
Aquents Severe: Severe: Severe: Severe: Poor:
floods, - floods, floods, wetness. wetness.
wetness. wetness. wetness.
u*:
trolls Severe: Severe: Severe: Severe: Poor:
floods, floods, floods, wetness. wetness.
wetness. wetness. wetness.
Aquepts Severe: Severe: Severe: Severe: Poor:
floods, floods, floods, wetness. wetness.
wetness. .wetness. wetness.
5, 6 Slight Severe: Severe: Severe: Good.
Ascalon seepage. seepage. seepage.
7 Slight Severe: Severe: Severe: Good.
Ascalon slope, seepage. seepage.
seepage.
8, 9 Slight Severe: Severe: Severe: Good.
Ascalon seepage. seepage. seepage.
10 Severe: Severe: Severe: Severe: Fair:
Bankard floods. floods, floods, floods. too sandy.
seepage. seepage.
11 , 12 Slight Severe: Severe: Severe: Good.
Dresser seepage. seepage. seepage.
13 Moderate: Severe: Severe: Severe: Poor:
Cascajo slope. slope, seepage. seepage. small stones.
seepage,
small stones.
14,49 16 Slight Moderate: Slight Slight Good.
Co y seepage.
17 Slight Severe: Slight Slight Good.
Colby slope.
18*:
Colby Slight ;Severe: Slight Slight Good.
slope.
Adena Moderate: ;Moderate:- Slight Slight Good.
peres slowly. I seepage,
slope. .
19
Moderate: ;Severe: Moderate: Moderate: Good.
Colombo floods. ; floods. floods. floods.
20 Slight ;Moderate: Slight Slight ;Good.
Colombo I slope,
seepage.
See footnote at end of table.
Vv l COUNTY, COLORADO, SOUTHERN PART
105
TABLE 7.--SANITARY FACILITIES--Continued
I
I
I
— Soil name and Septic tank j Sewage lagoon TrenchI
,
map symbol absorption areas Area' iDaily cover
sanitary
fields landfill landfill for landfill
21 , 22 Severe: Severe: Severe:
Dacono Slight Fair:
percs slowly. seepage. seepage. too clayey.
23 Moderate: Moderate: Slight Slight Fort Collins percs slowly. seepage. Good.
24 Moderate: Moderate: Slight Slight Fort Collins pores slowly. seepage, _ .Good.
slope.
25, 26
Severe: Severe: Severe: Severe:Haverson floods. floods. floods. Good.
floods.
27, 28 Severe: Moderate: Severe:
Slight Poor:
Heldt percs slowly. slope. too clayey. too clayey.
29, 30 Slight Severe:
Julesburg Severe: Severe: Good.
seepage. seepage. seepage.
31 Slight Moderate: Slight Slight Kim6 Good.
seepage.
32, 33 Slight Moderate: Slight Slight
Kim seepage, Good.
slope.
34 SlightSlight Severe: Slight
Slight Good.
slope.
35*:
Loup Severe: Severe: Severe: Severe:
wetness, wetness, Poor:
wetness, wetness,
floods. seepage, floods, floods, wetness.
floods. seepage. seepage.
hod Severe: Severe:
wetness, Severe: Severe: Poor:
wetness, wetness, wetness,
floods. seepage, floods, too sandy.
floods. floods.
seepage.
36*:
Midway Severe: Severe: Severe:
percs slowl Mslopete: Poor:
Y, slope to rock, depth to rock, slope. too clayey,
depth to rock, slope. too clayey.
thin layer.
Shingle Severe: Severe: Severe:
depth to rock. slope, Moderate: Severe:
depth to rock, slope, thin layer.
depth to rock.
37, 38 Severe: Severe: Severe:
Nelson Severe: Fair:
depth to rock. depth to rock, depth to rock, seepage. thin layer.
seepage. seepage.
39 Severe: Moderate: Slight Slight Nunn percs slowly. g Fair:
excess humus. too clayey.
4 Du Severe: Moderate: Slight Sli ht
percs slowly. excess humus, g Fair:
nn
slope. too clayey.
41 Severe: Moderate: Slight Slight g Fair:
Nunn percs slowly. excess humus. too clayey.
42 Severe: Moderate: Slight Slight unn percs slowly. excess humus, Fair:
slope. too clayey.
See footnote at end of table.
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
43 Severe: Moderate: Slight Slight Fair:
'Dunn percs slowly. excess humus. too clayey.
44, 45, 46, 7, 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.
Otero seepage.
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.
56, 57 Severe: Severe: Severe: Slight Fair:
Renohill peres slowly, depth to rock. depth to rock. too clayey,
depth to rock. thin layer.
58, 59 Severe: Severe: Severe: Slight Poor:
Shingle depth to rock. depth to rock. depth to rock. thin layer.
60*:
Shingle Severe: Severe: Severe: Slight Poor:
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,
seepage, seepage. area reclaim.
slope.
62, 63 Severe: Severe: Severe: Slight Fair:
Terry depth to rock. depth to rock, depth to rock. thin layer,
seepage. area reclaim.
64, 65 Severe: Severe: Severe: Slight Fair:
Thedalund depth to rock. depth to rock. depth to rock. thin layer.
66 Severe: Slight Moderate: Slight Poor:
Ulm percs slowly. too clayey.Y Y• too clayey.
67 Severe: - Moderate: Moderate: Slight Poor:
Ulm percs slowly. slope. too clayey. too clayey.
Y Y•
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.
71*:
Valent Slight Severe: Severe: Severe: Poor:
seepage. too sandy, , seepage. too sandy.
seepage.
See footnote at end of table.
WEl JOUNTY, COLORADO, SOUTHERN PART 107
TABLE. 7.--SANITARY FACILITIES--Continued
--Soil name and Septic tank Sewage lagoon 1 Trench Area Daily cover
map symbol absorption areas sanitary sanitary for landfill
fields landfill landfill
71*:
Loup Severe: Severe: _ Severe: Severe: Poor:
wetness, wetness, wetness, wetness, wetness.
floods. seepage, seepage, seepage,
floods. floods. floods.
72, 73 Slight Severe: Slight Slight Good.
Vona seepage.
74 Slight Severe: Slight Slight Good.
Vona seepage,
slope.
75, 76, 77 Slight Severe: Slight Slight Good.
Vona seepage.
78 Moderate: Moderate: Slight Slight Good.
Weld percs slowly. seepage.
79, 80 Moderate: Moderate: Slight Slight Good.
Weld percs slowly. slope,
seepage.
81*:
Wiley Moderate: Moderate: Slight Slight Fair:
percs slowly. seepage. too clayey.
Colby Slight Moderate: Slight Slight Good.
seepage.
82 83":
iley Moderate: Moderate: Slight Slight Fair:
percs slowly. seepage, too clayey.
slope.
Colby Slight Moderate: Slight Slight Good.
seepage.
* See map unit description for the composition and behavior of the map unit.
Hello