HomeMy WebLinkAbout20012372 aar yvyafa�. :4.:_, �:,..7.-:„.: xln � �
,..i ,-:1 5 1f:1/4444.
} a f ',lc,
.3 fis
�! Fv +k b ,, fi '"e'� uaC ,.yn::, :::.
1191HX3 ` ��
I...3-.4r-tv "F t.1 {•bx
4
ZL£Z-4002 �« t ro
E 'z€ Lt ry-�) s,i'Ir' r �{+3
T
`" 1 m ? r `r f' t ni
'. .xai:4 qZ V tji. - ) a�syjS 1 Kr '!
a! •
f* }
�, ,3 �,i : cr
... `8S u .a F.. i�3.fi1+ Lf s kt
.� '� 8E +` t
r
�r ` I x1` } •'�s:
SZ r-1.714,` ,� ,"+_ .3t '12 .1 a v,. +fs4 YS'1} , 41'16-5� �a to ` 1}. I } --'is ` ZS:A y,,,r..-..-.....,,,,a„
a, s } --s, „-
�7 �c ' '. -'jZit
41,..4-1,;.---.d R.�;: r '` ��,�. 1 4.-w,
L Ste. h ry"�.
T+` Y Taro - 1` y Y;T7 ( i , ZS ,. . ' a 1 •• i i,¢ tra...,i
rit 1) itfi IS �.4 -,..„"-I.,�� �' -4cv * �vt --,1.-,4,- h^�s1 L:kr y'�
r� IS
'�+ ' tJA &IT
.- re s, { ' ""
m/
r i y Y
s ` se , �`h � M S9 y
\
y✓ �.' S7 v !. h 10 : Iii-::-
sy z
�1 LL g-F � ,' -G... I s ,j S i. e ({�_
la
P1-t.1
y 4r.' Y q S. tv
a
TY t� it Z /K+G ♦ •4, .�—.. •.. +.s Z, iS ..r:,,,,4:-. A�
�,r q .,5
1. - „.• u }7 *la es
Ili zL a' t a tr zr ,.
.t� >1 O + nP q ,, ,.IS :4--., x r V - •� ', f 1 `H , LE 7
w
�� yif a '-4:tr F , fr i f. i, d {� TS -�'
ep �` t99 It''''-?3‘:: A%0‘1 tii"'L �, !-1 �
r
� ;4 N i a`k))\.,3,0t1� '."h " 44
ill s � r1LE S9 1
\
M ZL
k 1 1
, � � aa°aai °'so- �c fix _ Fr
4f ''')4.,l t..- t i
• k ,
EL \ ' ryryry,,,
y i .y > I IS 41 .4".064[ i ,:11:4* ..L
,�� .L -'006,44p.
wHy ;" '' = 1 Fr,4\4yy- t '°;sy 44;4'. � '"" 'Mt Poyy ,,;-14:‘4,1,'"tiiti -.�
rr- ..re# �" t'91�,�•„` „: s'�'�a µ. ,. s° zg -_. ZS
£ .r+ . i.±t „ ' r e tHe� ® v$ 4 Lb i
a .. ,,....',...Misr,-,,,,3/400), •0--"
D4°37'30" 1 � �h �/. 0
This map is compiled on 1974 aerial 5 05-0 4 D00 003 0 2 0~ 00 1~000
photography by the U.S. Department
of Agriculture,Soil Conservation Service
26 SOIL SURVEY
shale is about 18 inches. Permeability is moderate. Availa- plication of barnyard manure and commercial fertilizer.
ble water capacity is low. The effective rooting depth is Keeping tillage to a minimum and utilizing crop residue
10 to 20 inches. Surface runoff is medium to rapid, and are important.
the erosion hazard is moderate. In nonirrigated areas this soil is suited to winter wheat,
This unit is used as rangeland and wildlife habitat. The barley, and sorghum. Most of the acreage is planted to
potential native vegetation is dominated by alkali sacaton, winter wheat and is summer fallowed in alternate years
western wheatgrass, and blue grama. Buffalograss, to allow moisture accumulation. Generally precipitation is
sideoats grama, needleandthread, little bluestem, sedge, too low for beneficial use of fertilizer.
winterfat, and fourwing saltbush are also present. Poten- Stubble mulch farming, striperopping, and minimum til-
tial production ranges from 800 pounds per acre in lage are needed to control soil blowing and water erosion.
favorable years to 500 pounds in unfavorable years. As The potential native vegetation on this range site is
range condition deteriorates, the mid grasses decrease dominated by sand bluestem, sand reedgrass, and blue
and forage production drops. Undesirable weeds and an- grama. Needleandthread, switchgrass, sideoats grama,
nuals invade the site as range condition becomes poorer. and western wheatgrass are also prominent. Potential
Management of vegetation on this unit should be based production ranges from 2,200 pounds per acre in favora-
on taking half and leaving half of the total annual produc- ble years to 1,800 pounds in unfavorable yeai s. As range
tion. Seeding is desirable if the range is in poor condition. condition deteriorates, the sand bluestem, sand reedgrass,
Western wheatgrass, blue grama, alkali sacaton, sideoats and switchgrass decrease and blue grama, sand dropseed,
grama, little bluestem, pubescent wheatgrass, and crested and sand sage increase. Annual weeds and grasses invade
wheatgrass are suitable for seeding. The grass selected the site as range condition becomes poorer.
should meet the seasonal requirements of livestock. It can Management of vegetation on this soil should be based
be seeded into a clean, firm sorghum stubble, or it can be on taking half and leaving half of the total annual produc-
drilled into a firm prepared seedbed. Seeding early in tion. Seeding is desirable if the range is in poor condition.
spring has proven most successful. Sand bluestem, sand reedgrass, switchgrass, sideoats
Rangeland wildlife, such as antelope, cottontail, and grama, blue grama, pubescent wheatgrass, and crested
coyote, are best suited to this unit. Because forage wheatgrass are suitable for seeding. The grass selected
production is typically low, grazing management is needed should meet the seasonal requirements of livestock. It can
if livestock and wildlife share the range. Livestock water- be seeded into a clean, firm sorghum stubble, or it can be
ing facilities also are utilized by various wildlife species. drilled into a firm prepared seedbed. Seeding early in
The nearby cropland makes areas of this unit valuable as spring has proven most successful.
escape cover for openland wildlife, especially pheasants. Windbreak and environmental plantings are generally
Capability subclass VIe irrigated, VIe nonirrigated; Shaly not suited to this soil. Onsite investigation is needed to
Plains range site. determine if plantings are feasible.
37—Nelson fine sandy loam, 0 to 3 percent slopes. Wildlife is an important secondary use of this soil. The
This is a moderately deep, well drained soil on plains at cropland areas provide favorable habitat for ring-necked
elevations of 4,800 to 5,050 feet. It formed in residuum pheasant and mourning dove. Many nongame species can
from soft sandstone. Included in mapping are small areas be developed by establishing areas for nesting and escape
of soils that have sandstone at a depth of more than 40 cover. For pheasants, undisturbed nesting cover is essen-
inches. tial and should be included in plans for habitat develop-
Typically the surface layer is light brownish gray fine ment, especially in areas of intensive agriculture. Range-
sandy loam about 9 inches thick. The underlying material land wildlife, for example, the pronghorn antelope, can be
is light olive brown fine sandy loam. Soft sandstone is at attracted by developing livestock watering facilities,
a depth of about 30 inches. managing livestock grazing, and reseeding where needed.
Permeability is moderately rapid. Available water The underlying sandstone is the most limiting feature
capacity is moderate. The effective rooting depth is 20 to of this soil. Neither septic tank absorption fields nor
40 inches. Surface runoff is slow to medium, and the ero- sewage lagoons operate properly. Site preparation for
sion hazard is low. dwellings is more costly. Environmental and beautifica-
This soil is suited to most of the irrigated crops com- tion plantings of trees and shrubs may be difficult to
monly grown in the area, but it is somewhat restricted establish. This soil, however, does have good potential for
because it is only moderately deep. A suitable cropping such recreational development as camp and picnic areas
system is corn, corn for silage, barley, 3 to 4 years of al- and playgrounds. Capability subclass Ills irrigated, IVe
falfa, and wheat. This soil is also well suited to irrigated nonirrigated; Sandy Plains range site.
pasture. 38—Nelson fine sandy loam, 3 to 9 percent slopes.
Row crops can be irrigated by furrows or sprinklers. This is a moderately deep, well drained soil on plains at
Flooding from contour ditches and sprinkling are suitable elevations of 4,800 to 5,050 feet. It formed in residuum
in irrigating close grown crops and pasture. Small heads derived from soft sandstone. Included in mapping are
of water and short runs help to reduce erosion. Produc- small areas of soils that have sandstone at a depth of
tion can be maintained with frequent irrigations and ap- more than 40 inches.
A
1
WELD COUNTY, COLORADO, SOUTHERN PART 27
Typically the surface layer is light brownish gray fine establish. This soil, however, does have good potential for
sandy loam about 8 inches thick. The underlying material such recreational development as camp and picnic areas
I is light olive brown fine sandy loam. Soft sandstone is at and playgrounds. Capability subclass IVe irrigated, VIe
a depth of about 28 inches. noninigated; Sandy Plains range site.
Permeability is moderately rapid. Available water 39—Nunn loam, 0 to 1 percent slopes. This is a deep,
capacity is moderate. The effective rooting depth is 20 to well drained soil on terraces at elevations of 4,550 to 5,000
40 inches. Surface runoff is medium to rapid, and the ero- feet. It formed in mixed alluvium. Included in mapping
R sion hazard is moderate. are small, long and narrow areas of sand and gravel
This soil is suited to limited cropping. Intensive deposits and small areas of soil that are subject to.occa-
cropping is hazardous because of erosion. The cropping sional flooding. Some small leveled areas are also in-
1 system should be limited to such close grown crops as al- eluded.
i falfa, wheat, and barley. This soil is also suited to ir- Typically the surface layer of this Nunn soil is grayish
# rigated pasture. A suitable cropping system is 3 to 4 brown loam about 12 inches thick. The subsoil is light
years of alfalfa followed by 2 years of corn and small brownish gray clay loam about 12 inches thick. The upper
grain and alfalfa seeded with a nurse crop. part of the substratum is light brownish
Close grown crops can be irrigated from closely spaced g gray clay loam.
The lower part to a depth of 60 inches is brown sandy
contour ditches or sprinklers. Contour furrows or sprin- loam.
klers should be used for new crops. Applications of Permeability is moderately slow. Available water
nitrogen and phosphorus help in maintaining good produc- capacity is high. The effective rooting depth is 60 inches
tion. or more. Surface runoff is slow, and the erosion hazard is
The potential native vegetation on this range site is low.
dominated by sand bluestem, sand reedgrass, and blue This soil is used almost entirely for irrigated crops. It
grama. Needleandthread, switchgrass, sideoats grama, is suited to all crops commonly grown in the area, includ-
and western wheatgrass are also prominent. Potential ing corn, sugar beets, beans, alfalfa, small grain, potatoes,
production ranges from 2,200 pounds per acre in favora- and onions. An example of a suitable cropping system is 3
ii ble years to 1,500 pounds in unfavorable years. As range
condition deteriorates, the sand bluestem, sand reedgrass, to 4 years of alfalfa followed by corn, corn for silage,
and switchgrass decrease and blue grama, sand dropseed, sugar beets, small grain, or beans. Few conservation prac-
and sand sage increase. Annual weeds and grasses invade tices are needed to maintain top yields.
Al] methods of irrigation are suitable, but furrow ir-
the site as range condition becomes poorer.
Management of vegetation on this soil should be based rigation is the most common. Barnyard manure and com-
E on taking half and leaving half of the total annual produc- mercial fertilizer are needed for top yields.
tion. Seeding is desirable if the range is in poor condition. Windbreaks and environmental plantings of trees and
Sand bluestem, sand reed ass, switch shrubs commonly grown in the area are generally well
grass, grass, sideoats
suited to this soil. Cultivation to control competing
grama, blue grama, pubescent wheatgrass, and crested
wheatgrass are suitable for seeding. The grass selected vegetation should be continued for as many years as
should meet the seasonal requirements of livestock. It can Possible following planting. Trees that are best suited and
be seeded into a clean, firm sorghum stubble, or it can be have good survival are Rocky Mountain juniper, eastern
drilled into a firm prepared seedbed. Seeding early in redcedar, ponderosa pine, Siberian elm, Russian-olive, and
spring has proven most successful. hackberry. The shrubs best suited are skunkbush, lilac,
Windbreaks and environmental plantings are generally Siberian peashrub, and American plum.
not suited. Onsite investigation is needed to determine if Wildlife is an important secondary use of this soil. The
plantings are feasible.
Wildlife is an important secondary use of this soil. The
cropland areas provide favorable habitat for ring-necked
p
and mourning dove. Many nongame species can
cropland areas provide wildlife habitat for ring-necked be attracted by establishing areas for nesting and escape
pheasant and mourning dove. Many nongame species can cover. For pheasants, undisturbed nesting cover is essen-
¢ be attracted by establishing areas for nesting and escape tial and should be included in plans for habitat develop-
I cover. For pheasants, undisturbed nesting cover is essen- ment, especially in areas of intensive agriculture.
tial and should be included in plans for habitat develop- This soil has fair to poor potential for urban develop-
; ment, especially in areas of intensive agriculture. Range- ment. It has moderate to high shrink swell, low strength,
land wildlife, for example, the pronghorn antelope, can be and moderately slow permeability. These features create
iiii attracted by developing livestock watering facilities, problems in dwelling and road construction. Those areas
managing livestock grazing, and reseeding where needed. that have loam or sandy loam in the lower part of the
The underlying sandstone is the most limiting feature substratum are suitable for septic tank absorption fields
of this soil. Neither septic tank absorption fields nor and foundations. Some areas are adjacent to streams and
_ sewage lagoons operate properly. Site preparation for are subject to occasional flooding. This soil has fair poten-
dwellings is more costly. Environmental and beautifica- tial for such recreational development as camp and picnic
tion plantings of trees and shrubs may be difficult to areas and playgrounds. Capability class I irrigated.
WELD COUNTY, COLORADO, SOUTHERN PART 35
and switchgrass decrease and blue grama, sand dropseed, should be grown at least 50 percent of the time. Contour
and sand sage increase. Annual weeds and grasses invade ditches and corrugations can be used in irrigating close
the site as range condition becomes poorer. grown crops and pasture. Furrows, contour furrows, and
Management of vegetation on this soil should be based cross slope furrows are suitable for row crops. Sprinkler
on taking half and leaving half of the total annual produc- irrigation is also desirable. Keeping tillage to a minimum
tion. Seeding is desirable if the range is in poor condition. and utilizing crop residue help to control erosion. Main-
Sand bluestem, sand reedgrass, switchgrass, sideoats taming fertility is important. Crops respond to applica-
grama, blue grama, pubescent wheatgrass, and crested tions of phosphorus and nitrogen.
wheatgrass are suitable for seeding. The grass selected The potential native vegetation on this site is
should meet the seasonal requirements of livestock. It can dominated by sand bluestem, sand reedgrass, and blue
be seeded into a clean, firm stubble, or it can be drilled grama. Needleandthread, switchgrass, sideoats grama,
into a firm prepared seedbed. Seeding early in spring has and western wheatgrass are also prominent. Potential
proven most successful. production ranges from 2,200 pounds per acre in favora-
Windbreaks and environmental plantings are generally ble years to 1,800 pounds in unfavorable years. As range
suited to this soil. Soil blowing, the principal hazard in condition deteriorates, the sand bluestem, sand reedgrass,
establishing trees and shrubs, can be controlled by cul- and switchgrass decrease, and blue grama, sand dropseed,
tivating only in the tree row and by leaving a strip of and sand sage increase. Annual weeds and grasses invade
vegetation between the rows. Supplemental irrigation the site as range condition becomes poorer.
may be needed at the time of planting and during dry Management of vegetation on this soil should be based
periods. Trees that are best suited and have good survival on taking half and leaving half of the total annual produc-
are Rocky Mountain juniper, eastern redcedar, ponderosa tion. Seeding is desirable if the range is in poor condition.
pine, Siberian elm, Russian-olive, and hackberry. The Sand bluestem, sand reedgrass, switchgrass, sideoats
shrubs best suited are skunkbush sumac, lilac, and Siberi- grama, blue grama, pubescent wheatgrass, and crested
an peashrub. wheatgrass are suitable for seeding. The grass selected
Wildlife is an important secondary use of this soil. should meet the seasonal requirements of livestock. It can
Ring-necked pheasant, mourning dove, and many non- be seeded into a clean, firm sorghum stubble, or it can be
game species can be attracted by establishing areas for drilled into a firm prepared seedbed. Seeding early in
nesting and escape cover. For pheasants, undisturbed spring has proven most successful.
nesting cover is essential and should be included in plans Windbreaks and environmental plantings are generally
for habitat development, especially in areas of intensive suited to this soil. Soil blowing, the principal hazard in
agriculture. establishing trees and shrubs, can be controlled by cul-
Rapid expansion of Greeley and the surrounding area tivating only in the tree row and by leaving a strip of
has resulted in urbanization of much of this Otero soil. vegetation between the rows. Supplemental irrigation
This soil has excellent potential for urban and recrea- may be needed at the time of planting and during dry
tional development. The only limiting feature is the periods. Trees that are best suited and have good survival
moderately rapid permeability in the substratum, which are Rocky Mountain juniper, eastern redcedar, ponderosa
causes a hazard of ground water contamination from pine, Siberian elm, Russian-olive, and hackberry. The
sewage lagoons. 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.
52—Otero sandy loam, 3 to 5 percent slopes. This is a Ring-necked pheasant, mourning dove, and many non-
deep, well drained soil on plains at elevations of 4,700 to game species can be attracted by establishing areas for •
5,250 feet. It formed in mixed outwash and eolian nesting and escape cover. For pheasants, undisturbed
deposits. Included in mapping are small areas of soils that nesting cover is essential and should be included in plans
have loam and clay loam underlying material. Also in- for habitat development, especially in areas of intensive
eluded are small areas of soils that have sandstone and agriculture.
shale within a depth of 60 inches. Rapid expansion of Greeley and the surrounding area
Typically the surface layer of this Otero soil is brown has resulted in urbanization of much of this Otero soil.
sandy loam about 10 inches thick. The underlying material The soil has excellent potential for urban and recreational
to a depth of 60 inches is pale brown calcareous fine development. The only limiting feature is the moderately
sandy loam. rapid permeability in the substratum, which causes a
Permeability is rapid. Available water capacity is hazard of ground water contamination from sewage
moderate. The effective rooting depth is 60 inches or lagoons. Lawns, shrubs, and trees grow well. Capability
more. Surface runoff is medium, and the erosion hazard is subclass Tile irrigated, VIe nonirrigated; Sandy Plains
low. range site.
This soil is used almost entirely for irrigated crops. It 53—Otero sandy loam, 5 to 9 percent slopes. This is a
is suited to the crops commonly grown in the area. deep, well drained soil on plains at elevations of 4,700 to
Perennial grasses and alfalfa or close growing crops 5,250 feet. It formed in mixed outwash and eolian
iY
34 SOIL SURVEY •
or drilled into a firm, clean sorghum stubble. Seeding tivating only in the tree row and by leaving a strip of
early in spring has proven most successful. Brush vegetation between the rows. Supplemental irrigation
management can also help to improve deteriorated range. may be needed at the time of planting and during dry
Windbreaks and environmental plantings are fairly well periods. Trees that are best suited and have good survival
suited to this soil. Blowing sand and low available water are Rocky Mountain juniper, eastern redcedar, ponderosa
capacity are the principal hazards in establishing trees pine, Siberian elm, Russian-olive, and hackberry. The
and shrubs. This soil is so loose that trees should be shrubs best suited are skunkbush sumac, lilac, and Siberi-
planted in shallow furrows, and vegetation is needed an peashrub. •
between the rows. Supplemental irrigation may be needed Wildlife is an important secondary use of this soil.
to insure survival. Trees that are best suited and have Ring-necked pheasant, mourning dove, and many non-
good survival are Rocky Mountain juniper, eastern game species can be attracted by establishing areas for
redcedar, ponderosa pine, and Siberian elm. The shrubs nesting and escape cover. For pheasants, undisturbed
best suited are skunkbush sumac, lilac, and Siberian nesting cover is essential and should be included in plans
peashrub. for habitat development, especially in areas of intensive
Wildlife is an important secondary use of this soil. The agriculture.
cropland areas provide favorable habitat for ring-necked Rapid expansion of Greeley and the surrounding area
pheasant and mourning dove. Many nongarne species can has resulted in urbanization of much of this Otero soil.
be attracted by establishing areas for nesting and escape This soil has excellent potential for urban and recrea-
cover. For pheasants, undisturbed nesting cover is essen- tional development. The only limiting feature is the
tial and should be included in plans for habitat develop- moderately rapid permeability in the substratum, which
ment, especially in areas of intensive agriculture. Range- causes a hazard of ground water contamination from
land wildlife, for example, the pronghorn antelope, can be sewage lagoons. Lawns, shrubs, and trees grow well.
attracted by developing livestock watering facilities, Capability subclass Its irrigated.
managing livestock grazing, and reseeding where needed. 51—Otero sandy loam, 1 to 3 percent slopes. This is a
Few areas of this soil are in major growth and ur- deep, well drained soil on plains at elevations of 4,700 to
banized centers. The chief limiting feature is the rapid 5,250 feet. It formed in mixed outwash and eolian
permeability in the substratum, which causes a hazard of deposits. Included in mapping are small areas of soils that
ground water contamination from seepage. Potential for have loam and clay loam underlying material.
recreation is poor because of the sandy surface layer. Typically the surface layer is brown sandy loam about
Capability subclass IVe irrigated, Vie nonirrigated; Deep 12 inches thick. The underlying material to a depth of 60
Sand range site. inches is pale brown calcareous fine sandy loam.
50—Otero sandy loam, 0 to 1 percent slopes. This is a Permeability is rapid. Available water capacity is
deep, well drained soil on smooth plains at elevations of moderate. The effective rooting depth is 60 inches or
4,700 to 5,250 feet. It formed in mixed outwash and eolian more. Surface runoff is slow, and the erosion hazard is
deposits. Included in mapping are small areas of soils that low.
have loam and clay loam underlying material. This soil is used almost entirely for irrigated crops. It
Typically the surface layer is brown sandy loam about is suited to all crops commonly grown in the area. Land
12 inches thick. The underlying material to a depth of 60 leveling, ditch lining, and installing pipelines may be
inches is pale brown calcareous fine sandy loam. needed for proper water application.
Permeability is rapid. Available water capacity is All methods of irrigation are suitable, but furrow ir-
moderate. The effective rooting depth is 60 inches or rigation is the most common. Barnyard manure and corn-
more. Surface runoff is slow, and the erosion hazard is mercial fertilizer are needed for top yields.
low. In nonirrigated areas this soil is suited to winter wheat,
This soil is used almost entirely for irrigated crops. It barley, and sorghum. Most of the acreage is planted to
is suited to all crops commonly grown in the area, includ- winter wheat. The predicted average yield is 28 bushels
ing corn, sugar beets, beans, alfalfa, small grain, potatoes, per acre. The soil is summer fallowed in alternate years
and onions. An example of a suitable cropping system is 3 to allow moisture accumulation. Generally precipitaiton is
to 4 years of alfalfa followed by corn, corn for silage, too low for beneficial use of fertilizer.
sugar beets, small grain, or beans. Generally, such charac- Stubble mulch farming, striperopping, and minimum til-
teristics as a high clay content or a rapidly permeable lage are needed to control water erosion. Terracing also
substratum slightly restrict some crops. may be needed to control water erosion.
All methods of irrigation are suitable, but furrow ir- The potential native vegetation on this range site is
rigation is the most common. Proper irrigation water dominated by sand bluestem, sand reedgrass, and blue
management is essential. Barnyard manure and commer- grama. Needleandthread, switchgrass, sideoats grama,
dal fertilizer are needed for top yields. and western wheatgrass are also prominent. Potential
Windbreaks and environmental plantings are generally production ranges from 2,200 pounds per acre in favora-
suited to this soil. Soil blowing, the principal hazard in ble years to 1,800 pounds in unfavorable years. As range
establishing trees and shrubs, can be controlled by cal- condition deteriorates, the sand bluestem, sand reedgrass,
Hello