HomeMy WebLinkAbout20001049.tiff WELD COUNTY, LORADO, SOUTHER'
(POINTOF R0CK'CO '1ADRANGLE)
R.62W � R 61 W.
I
a
(Joins asse• t 8,sheet 5) -
55-
7 52
74 > lb n'k 74 63 a fix . ! 7.
74 ti r. :d�5+ 62 5a+
1
1
D 47
}
c 4 � biz n . , � r' s
v �
z w rE"'•. �: 72 63
74 - w t\
14. , 13 47 18
r m 3.� 3 .'p 72 w
\ 63
63
72 ^
}
-.Y 44
4. O 74 74 i
8 &` '-"s"-, 74 c «`8tg1/4 .. t r �t"r- ` I 24 C‘f
F"A }... c . 23 74 7263 -i
O 21 44 t s ',
cr
56 36
62
,�+ J2 {70 74
72
72
i
£ WELD COUNTY, COLORADO, SOUTHERN PART 45
t:
• range condition deteriorates, the sand bluestem, The potential vegetation is dominated by sand
switchgrass, sand reedgrass, sideoats grama, and little bluestem, sand reedgrass, switchgrass, sideoats grama,
'i, bluestem decrease, forage production drops, and sand needleandthread, little bluestem, and blue grama. Poten-
sage increases. Undesirable weeds and annuals invade tial production ranges from 2,500 pounds per acre in
_4} and "blowout" conditions can occur as range condition favorable years to 1,800 pounds in unfavorable years. As
• becomes poorer. range condition deteriorates, the sand bluestem,
Management of vegetation on this soil should be based switchgrass, sand reedgrass, sideoats grama, and little
, on taking half and leaving half of the total annual produc- bluestem decrease, forage production drops, and sand
U tion. Seeding is desirable if the range is in poor condition. sage increases. Undesirable weeds and annuals invade
Sand bluestem, sand reedgrass, indiangrass, switchgrass, and "blowout" conditions can occur as range condition
sideoats grama, little bluestem, and blue grama are suita- becomes poorer.
ble for seeding. Because this soil is susceptible to soil Management of vegetation on this soil should be based
blowing, it should be seeded using an interseeder, or the on taking half and leaving half of the total annual produc-
seed should be drilled into a firm, clean sorghum stubble. tion. Seeding is desirable if the range is in poor condition.
Seeding early in spring has proven most successful. Brush Sand bluestem, sand reedgrass, indiangrass, switchgrass,
management also can help in improving deteriorated side-oats grama, little bluestem, and blue grama are suita-
range. ble for seeding. Because this soil is susceptible to soil
Windbreaks and environmental plantings are fairly well blowing, it should be seeded using an interseeder or the
y suited to this soil. Blowing sand and the moderate availa- seed should be drilled into a firm, clean sorghum stubble.
ble water capacity are the principal hazards in establish- Seeding early in spring has proven most successful. Brush
. ing trees and shrubs. The soil is so loose that trees should management can also help in improving deteriorated
Ibe planted in shallow furrows, maintaining vegetation range.
,h . between the rows. Supplemental irrigation is needed to Windbreaks and environmental plantings are generally
insure survival. Trees that are best suited and have good not suited to this soil. Onsite investigation is needed to
survival are Rocky Mountain juniper, eastern redcedar, determine if plantings are feasible.
".. ponderosa pine, and Siberian elm. The shrubs best suited Wildlife is an important secondary use of this soil. Ran-
Y are skunkbush sumac, lilac, and Siberian peashrub. geland wildlife, for example, the pronghorn antelope, can
Wildlife is an important secondary use of this soil. The be attracted by developing livestock watering facilities,
;:. _. cropland areas provide favorable habitat for ring-necked managing livestock grazing, and reseeding where needed.
pheasant and mourning dove. Many nongame species can This soil has fair potential for urban development. The
a be attracted by establishing areas for nesting and escape chief limiting soil features are the rapid permeability and
r` cover. For pheasants, undisturbed nesting cover is essen- the susceptibility to soil blowing. Septic tank absorption
tial and should be included in plans for habitat develop- fields function properly, but in places the sandy sub-
ment, especially in areas of intensive agriculture. Range- stratum does not properly filter the leachate. Sewage
, land wildlife, for example, the pronghorn antelope, can be lagoons must be sealed. Once established, lawns, shrubs,
a, attracted by developing livestock watering facilities, and trees grow well. Capability subclass VIe irrigated,
1 managing livestock grazing, and reseeding where needed. VIe nonirrigated; Deep Sand range site.
This soil has fair potential for urban development. The 71—Valent-Loup complex, 0 to 9 percent slopes. This
primary limiting soil features are the rapid permeability level to moderately sloping map unit occupies hills, ridges,
ia. and the susceptibility to soil blowing. Septic tank absorp- and depression or pothole-like areas in the sandhills at
# tion fields function properly, but in places the sandy sub- elevations of 4,670 to 4,700 feet. The Valent soil makes up
stratum does not properly filter the leachate. Sewage about 60 percent of the unit, the Loup soil about 35 per-
lagoons must be+ sealed. Once established, the lawns, cent. About 5 percent is dune sand. The Valent soil occu-
r shrubs, and trees grow well. Capability subclass IVe ir- pies the hills and ridges and the Loup soil the depressions
rigated, VIe nonirrigated; Deep Sand range site. or potholes.
70—Valent sand, 3 to 9 percent slopes. This is a deep, The Valent soil is deep and excessively drained. It
,;
excessively drained soil on plains at elevations of 4,650 to formed in eolian deposits. Typically the surface layer is
5,100 feet. It formed in eolian deposits. Included in brown sand about 8 inches thick. The underlying material
mapping are small areas of soils that have lime within a to a depth of 60 inches is brown sand.
depth of 40 inches. Also included are small areas of soils Permeability is rapid. Available water capacity is
4 that have sandstone between 40 and 60 inches. moderate. The effective rooting depth is 60 inches or
1 Typically the surface layer of the Valent soil is brown more. Surface runoff is slow, and the erosion hazard is
1 sand about 6 inches thick. The underlying material to a low.
depth of 60 inches is brown sand. The Loup soil is deep and poorly drained. It formed in
}{ Permeability is rapid. Available water capacity is sandy alluvium. Typically the surface layer is very dark
!ry _ moderate. The effective rooting depth is 60 inches or grayish brown, mottled loamy sand about 16 inches thick.
r more. Surface runoff is slow, and the erosion hazard is The underlying material to a depth of 60 inches is light
low, brownish gray, mottled loamy sand and sandy loam.
I
i
l
WELD COUNTY, COLORADO, SOUTHERN PART 47 l
f
b- ktracted by establishing areas for nesting and escape wheatgrass are suitable for seeding. The grass selected
c For pheasants, undisturbed nesting cover is essen- should meet the seasonal requirements of livestock. It can s
tial and should be included in plans for habitat develop- be seeded into a clean, firm sorghum stubble, or it can be t
ment, especially in areas of intensive agriculture. Range- drilled into a firm prepared seedbed. Seeding early in
land wildlife, for example, the pronghorn antelope, can be spring has proven most successful.
attracted by developing livestock watering facilities, Windbreaks and environmental plantings are fairly well
managing livestock grazing, and reseeding where needed. suited to this soil. Blowing sand and low available water
This soil has good potential for urban and recreational capacity are the principal hazards in establishing trees
development. Once established, the lawns, shrubs, and and shrubs. The soil is so loose that trees should be 3'
trees grow well. The chief limiting soil feature is the planted in shallow furrows and vegetation maintained
rapid permeability in the substratum, which causes a between the rows. Supplemental irrigation may be needed
hazard of ground water contamination from sewage to insure survival. Trees that are best suited and have
lagoons. In places recreational development is limited by good survival are Rocky Mountain juniper, western
the susceptibility to soil blowing. Capability subclass IIIe redcedar, ponderosa pine, and Siberian elm. The shrubs
irrigated, IVe nonirrigated; Sandy Plains range site. best suited are skunkbush sumac, lilac, and Siberian
73—Vona loamy sand, 3 to 5 percent slopes. This is a peashrub.
Wildlife is an important secondary use of this soil. The '•deep, somewhat excessively drained soil on plains and
high terraces at elevations of 4,600 to 5,200 feet. It cropland areas provide favorable habitat for ring-necked
formed in eolian or alluvial deposits. Included in mapping pheasant and mourning dove. Many nongame species can
are some leveled areas. Also included are small areas of be attracted by establishing areas for nesting and escape
soils that have a loamy substratum and some areas of cover. For pheasants, undisturbed nesting cover is essen-
soils that are noncalcareous to a depth of 60 inches. tial and should be included in plans for habitat develop- ;'.
Typically the surface layer of this Vona soil is grayish ment, especially in areas of intensive agriculture. Range-
land wildlife, for example, the pronghorn antelope, can be •
brown. The upper 6 inches is loamy sand and the lower 5
inches is fine sandy loam. The subsoil is brown and light attracted by developing livestock watering facilities,
yellowish brown fine sandy loam about 14 inches thick. managing livestock grazing, and reseeding where needed.
The substratum to a depth of 60 inches is sandy loam. This soil has good potential for urban and recreational
development. Once established, the lawns, shrubs, and I-`
Permeability is moderately rapid. Available water
city is moderate. The effective rooting depth is g0 trees grow well. The primary limiting soil feature is the
rapid permeability in the substratum, which causes a
..__.yes or more. Surface runoff is slow, and the erosion
hazard is low. hazard of ground water contamination from sewage
This soil is suited to limited cro in Intensive lagoons. In places recreational development is limited by
pp g' the susceptibility to soil blowing. Capability subclass IVe
cropping is hazardous because of soil blowing. The irri•gated, •.
cVIe nonirrigated; Sandy Plains range site.
cropping system should be limited to such close grown 74—Vona loamy sand, 5 to 9 percent slopes. This is a
crops as alfalfa, wheat, and barley. The soil is also suited deep, somewhat excessively drained soil on plains at •
to irrigated pasture. A suitable cropping system is 3 to 4 elevations of 4,600 to 5,200 feet. It formed in eolian
years of alfalfa followed by 2 years of corn and small deposits. Included in mapping are small areas of soils that
grain and alfalfa seeded with a nurse crop. have a loamy substratum and areas of soils that are non-
Closely spaced contour ditches or sprinklers can be calcareous to a depth of 60 inches.
used in irrigating close grown crops. Contour furrows or Typically the surface layer is grayish brown. The upper
spinklers should be used for new crops. Application of 6 inches is loamy sand and the lower 4 inches is fine
barnyard manure and commercial fertilizer helps to main- sandy loam. The subsoil is brown and light yellowish
taro good production. brown fine sandy loam about 12 inches thick. The sub-
The potential native vegetation on this range site is stratum to a depth of 60 inches is loamy sand.
dominated by sand bluestem, sand reedgrass, and blue Permeability is moderately rapid. Available water I
grama. Needleandthread, switchgrass, sideoats grama, capacity is moderate. The effective rooting depth is 60 t
and western wheatgrass are also prominent. Potential inches or more. Surface runoff is medium, and the erosion
production ranges from 2,200 pounds per acre in favora- hazard is low.
ble years to 1,800 pounds in unfavorable years. As range The potential native vegetation on this range site is
condition deteriorates, the sand bluestem, sand reedgrass, dominated by sand bluestem, sand reedgrass, and blue
and switchgrass decrease and blue grama, sand dropseed, grama. Needleandthread, switchgrass, sideoats grama,
and sand sage increase. Annual weeds and grasses invade and western wheatgrass are also prominent. Potential
the site as range condition becomes poorer. production ranges from 2,200 pounds per acre in favora- l•
Management of vegetation on this soil should be based ble years to 1,800 pounds in unfavorable years. As range
on taking half and leaving half of the total annual produc- condition deteriorates, the sand bluestem, sand reedgrass,
Lion. Seeding is desirable if the range is in poor condition. and switchgrass decrease and blue grama, sand dropseed,
id bluestem, sand reedgrass, switchgrass, sideoats and sand sage increase. Annual weeds and grasses invade
grama, blue grama, pubescent wheatgrass, and crested the site as range condition becomes poorer.
48 SOIL SURVEY
Management of vegetation on this soil should be based Windbreaks and environmental plantings are gener
on taking half and leaving half of the total annual produc- suited to this soil. Soil blowing, the principal bazar(
tion. Seeding is desirable if the range is in poor condition. establishing trees and shrubs, can be controlled by
Sand bluestem, sand reedgrass, switehgrass, sideoats tivating only in the tree row and by leaving a stri;
grama, blue grama, pubescent wheatgrass, and crested vegetation between the rows. Supplemental irriga
wheatgrass are suitable for seeding. The grass selected may be necessary at the time of planting and during
should meet the seasonal requirements of livestock. It can dry periods. Trees that are best suited and have g
be seeded into a clean, firm sorghum stubble, or it can be survival are Rocky Mountain juniper, eastern redce
drilled into a firm prepared seedbed. Seeding early in ponderosa pine, Siberian elm, Russian-olive, and hack
spring has proven most successful. ry. The shrubs best suited are skunkbush sumac, lilac,
Windbreaks and environmental plantings are fairly well Siberian peashrub.
suited to this soil. Blowing sand and low available water Wildlife is an important secondary use of this
capacity are the principal hazards in establishing trees Ring-necked pheasant, mourning dove, and many
and shrubs. This soil is so loose that trees should be game species can be attracted by establishing areas
planted in shallow furrows and vegetation maintained nesting and escape cover. For pheasants, undistui
between the rows. Supplemental irrigation may be needed nesting cover is essential and should be included in p
to insure survival. Trees that are best suited and have for habitat development, especially in areas of inten
good survival are Rocky Mountain juniper, eastern agriculture.
redcedar, ponderosa pine, and Siberian elm. The shrubs This soil has good potential for urban and recreati
best suited are skunkbush sumac, lilac, and Siberian development. Lawns, shrubs, and trees grow well.
peashrub. only limiting feature is the rapid permeability in the
Wildlife is an important secondary use of this soil. Ran- stratum, which causes a hazard of ground water
geland wildlife, for example, the pronghorn antelope, can tamination from sewage lagoons. Capability subclass
be attracted by developing livestock watering facilities, irrigated.
76—Vona sandy loam, 1 to 3 percent slopes. This
managing livestock grazing, and reseeding where needed.
This soil has good potential for urban and recreational deep, well drained soil on plains and high terrace
elevations of 4,600 to 5,200 feet. It formed in eolian
development. Once established, the lawns, shrubs, and
alluvial deposits. Included in mapping are some rev
trees grow well. The primary limiting soil feature is the
rapid areas. Also included are small areas of soils that ha
permeability in the substratum, which causes a
loamy substratum and areas of soils that are noncalc
hazard of ground water contamination from sewage ous to a depth of 60 inches.
lagoons. In places recreational development is limited by Typically the surface layer of this Vona soil is gra
the susceptibility to soil blowing. Capability subclass VIe brown sandy loam about 10 inches thick. The subsc
irrigated, VIe nonirrigated; Sandy Plains range site. brown fine sandy loam about 18 inches thick. The
75—Vona sandy loam, 0 to 1 percent slopes. This is a stratum to a depth of 60 inches is sandy loam.
deep, well drained soil on high terraces at elevations of Permeability is moderately rapid. Available w
4,650 to 4,950 feet. It formed in alluvial deposits. Included capacity is moderate. The effective rooting depth i
in mapping are some leveled areas and small areas of inches or more. Surface runoff is slow, and the erc
soils that have a loamy substratum. hazard is low.
Typically the surface layer of this Vona soil is grayish In irrigated areas this soil is suited to all crops i
brown sandy loam about 10 inches thick. The subsoil is monly grown in the area, including corn, sugar h
brown fine sandy loam about 20 inches thick. The sub- beans, alfalfa, small grain, and onions. An example
stratum to a depth of 60 inches is sandy loam. suitable cropping system is 3 to 4 years of alfalfa
Permeability is moderately rapid. Available water lowed by corn, corn for silage, sugar beets, small grai:
capacity is moderate. The effective rooting depth is 60 beans. Land leveling, ditch lining, and installing pipe.
inches or more. Surface runoff is slow, and the erosion are needed for proper water applications.
hazard is low. All methods of irrigation are suitable, but furrov
This soil is used almost entirely for irrigated crops. It rigation is the most common. Barnyard manure and
is suited to all crops commonly grown in the area, includ- mercial fertilizer are needed for top yields.
ing corn, sugar beets, beans, alfalfa (fig. 7), small grain, Windbreaks and environmental plantings are gene
potatoes, and onions. An example of a suitable cropping suited to this soil. Soil blowing, the principal hazar
system is 3 to 4 years of alfalfa followed by corn, corn for establishing trees and shrubs, can be controlled by
silage, sugar beets, small grain, or beans. The rapidly tivating only in the tree row and by leaving a stri
permeable substratum slightly restricts some crops. vegetation between the rows. Supplemental irrig:
All methods of irrigation are suitable, but furrow ir- may be necessary at the time of planting and during
rigation is the most common. Proper irrigation manage- periods. Trees that are best suited and have good sur
ment is essential. Barnyard manure and commercial fertil- are Rocky Mountain juniper, eastern redcedar, ponde
izer are needed for top yields. pine, Siberian elm, Russian-olive, and hackberry.
y
A
J.
?, WELD COUNTY, COLORADO, SOUTHERN PART
103
V. _ TABLE 6.--BUILDING SITE DEVELOPMENT--Continued
:
Soil name and Shallow Dwellings
i map symbol excavations Dwellings Small Local roads
without with commercial and streets
.q basements basements _ buildings
66, 67 Moderate: Severe: Severe: Severe:
Ulm too clayey, shrink- Severe:
swell. shrink-swell. shrink-swell. low strength,
68* shrink-swell.
Severe: Moderate: Moderate: Moderate: Moderate:
Ustic small stones, slope. slope.
Torriorthents cutbanks cave. slope. slope.
69 Severe: Slight
Valent g Slight Slight Slight.
cutbanks cave.
70 Severe: Slight Slight Moderate: Slight.
Valent cutbanks cave.
slope.
71*:
' T. Valent Severe: Slight Slight
cutbanks cave. Slight Moderate: Slight.
slope.
4
Loup Severe: Severe: Severe: Severe:
wetness, wetness, wetness, Severe:
wetness, wetness.
cutbanks cave. floods. floods. floods.
72 Slight
Vona Slight Slight Slight Moderate:
low strength.
73, 74
Slight
lc Vona Slight Slight Moderate: Moderate:
slope. low strength.
'1 75, 76
Slight
Vona g Slight Slight Slight Moderate:
low strength.
77 Slight
Vona Slight Slight Moderate: Moderate:
slope. low strength.
78, 79 Slight Moderate: Moderate: Moderate: Moderate:
Weld low strength, low ,strength
P low strength, low strength,
shrink-swell, shrink-swell. shrink-swell. shrink-swell,
( frost action.
': 80 Slight Moderate: Moderate: Moderate: Moderate:
Weld low strength, low ,strength
P low strength, low strength,
1shrink-swell. shrink-swell. slope, shrink-swell,
•
shrink-swell. frost action.
81*, 82*:
Wiley :Slight Moderate: Moderate: Moderate: Moderate:
low strength, low strength, low strength, low strength,
"? • shrink-swell. shrink-swell. shrink-swell. shrink-swell.
`` Colby111 I
(Slight Slight Slight Slight Moderate:
83*• low strength.
` Wiley :Slight Moderate: Moderate: Moderate: Moderate:
low strength, low strength, low strength, low strength,
shrink-swell. shrink-swell. slope, shrink-swell.
shrink-swell.
i
Colby :Slight Slight Slight Moderate: Moderate:
,
slope. low strength.
* See map unit description for the composition and behavior of the map unit.
';8
106 SOIL SURVEY
TABLE 7.--SANITARY FACILITIES--Continued I
Soil name and Septic tank Sewage lagoon Trench
Area , Daily cover
map symbol absorption i areas sanitary sanitary : for landfill
fields _ landfill landfill I
I
43 Severe: ;Moderate: Slight Slight ;Fair:
Nunn peres slowly. ; excess humus. ; too clayey.
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
g ;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 percs slowly, ; depth to rock. depth to rock. ; too clayey,
depth to rock. I ; 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, • I too clayey,
depth to rock. ; thin layer.
61 Severe: Severe: Severe: Severe: ;Poor:
Tassel depth to rock. depth to rock, depth to rock, seepage. I thin layer,
seepage, seepage. ; area reclaim.
slope.
62, 6 i
3 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. I too clayey. ; too clayey.
67 Severe: ;Moderate: Moderate: Slight ;Poor:
Ulm percs slowly. ; slope. too clayey. ; too clayey.
68*
Moderate: ;Severe: Severe: Severe: ;Poor:
Ustic Torriorthents slope. ; seepage, seepage, seepage. I too sandy,
1 small stones. too sandy. ; small stones.
69, 70 Slight ;Severe: Severe: Severe: ;Poor:
Valent ; seepage. too sandy, seepage. I too sandy.
seepage.
71*:
Valent Slight ;Severe: Severe: Severe: ;Poor: ).
seepage. too sandy, seepage. ; too sandy.
seepage.
See footnote at end of table.
WELD COUNTY, COLORADO, SOUTHERN PART 107
TABLE 7.--SANITARY FACILITIES--Continued
Soil name and I Septic tank Sewage lagoon ' 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.
i floods. seepage, seepage, seepage,
floods. floods. floods.
72, 73 'Slight Severe: Slight Slight Good.
Vona ' seepage.
74 ;Slight Severe: Slight Slight Good.
Vona ' seepage,
I slope.
75, 76, 77
Slight :Severe: Slight Slight Good.
Vona
' seepage.
78
:Moderate: :Moderate: Slight Slight Good.
Weld percs slowly. ; seepage.
e.
P
79, 80 Moderate: 'Moderate: Slight Slight Good.
Weld peres slowly. ' slope,
' seepage.
81':
Wiley Moderate: 'Moderate: Slight Slight Fair:
percs slowly. ' seepage.
too clayey.
Colby Slight ;Moderate: Slight Slight Good.
I seepage.
8 _ 83*.
=y ;Moderate: 'Moderate: Slight Slight Fair:
I percs slowly. I seepage, g
too clayey.
slope.
Colby 'Slight 'Moderate: Slight Slight Good.
' seepage.
" See map unit description for the composition and behavior of the map unit.
g
110 SOIL SURVEY a
TABLE 8.--CONSTRUCTION MATERIALS--Continued
d
' I j
Soil name and Roadfill Sand Gravel Topsoil v
map symbol
l
6011: I'
Renohill Poor: :Unsuited Unsuited :Poor: 1:
low strength, I thin layer.thin layer. i�F
V
61 Poor: :Unsuited Unsuited :Poor:
Tassel thin layer, 1 area reclaim.
area reclaim. I i
62, 63 Poor: :Unsuited: Unsuited: :Fair: s
Terry thin layer, 1 thin layer. thin layer. : small stones. .5
area reclaim.
64, 65 Poor: :Unsuited Unsuited :Good.
Thedalund thin layer. I
66, 67 Poor: ;Unsuited Unsuited Fair:
Ulm shrink-swell, too clayey.
low strength.
68' Good :Good Good Poor:
Ustic Torriorthents i i small stones,
too sandy.
69, 70 Good Fair Unsuited Poor:
Valent too sandy.
71':
Valent Good Fair Unsuited Poor: i.
too sandy.
Loup Poor: Fair: Unsuited: Poor:
wetness. excess fines. excess fines. wetness.
72, 73, 74, 75, 76,
77 Fair: Poor: Unsuited Good.
Vona low strength. excess fines.
78, 79, 80 Fair: Unsuited Unsuited Fair:
Weld low strength, too clayey.
shrink-swell,
frost action.
81", 82', 83":
Wiley Fair: Unsuited Unsuited Fair: 1
low strength, too clayey. i
shrink-swell.
Colby Fair: Unsuited Unsuited Good.
low strength.
4 See map unit description for the composition and behavior of the map unit. 1
r
1
114 SOIL SURVEY "I
t1
TABLE 9.--WATER MANAGEMENT--Continued il
it name and Pond Embankments, Drainage Irrigation Terraces Grassed
map symbol reservoir dikes, and and 1 waterways
areas levees diversions '
:
63 Slope, Piping, Slope, Slope, Slope, Slope,
Terry depth to rock, thin layer. rooting depth. rooting depth, depth to rock, rooting depth,
seepage. soil blowing, soil blowing. soil blowing.
54 Depth to rock, Low strength, Slope, Slope, Depth to rock Rooting depth.
Thedalund slope. piping, depth to rock. rooting depth.
thin layer.
65 Depth to rock, Low strength, Slope, Slope, Depth to rock Slope,
Thedalund slope. piping, depth to rock. rooting depth. ; rooting depth.
thin layer.
65 Favorable Low strength, Favorable Peres slowly, ;Peres slowly--- Erodes easily.
Ulm shrink-swell, erodes easily.
compressible.
•
57 Slope Low strength, Slope Slope, Peres slowly--- Erodes easily.
Ulm shrink-swell, percs slowly,
compressible. erodes easily. :
,
68* Seepage, Seepage Slope Slope, Too sandy, :Droughty,
Ustic slope. droughty. slope. : slope.
Torriorthents
69 Seepage, Pi in Slope Slope, Erodes easily,
Piping, p p :Erodes easily.
Valent slope. seepage. erodes easily, piping.
droughty.
:
70 Seepage., Piping, Slope Slope, Erodes easily, :Slope,
Valent slope. seepage. erodes easily, piping. : erodes easily.
droughty.
:
.ent Seepage, Piping, Slope Slope, Erodes easily, ;Slope,
slope. seepage. erodes easily, piping. : erodes easily.
droughty.
Loup Seepage Seepage, Poor outlets, Wetness, Not needed :Not needed.
piping. cutbanks cave, seepage.
72, 73 Seepage, Piping, Slope Slope, Piping, :Erodes easily.
Vona slope. erodes easily, fast intake, erodes easily.:
seepage. seepage.
:
74 Seepage, Piping, Slope Slope, Piping, ;Slope,
Vona slope. erodes easily, fast intake, erodes easily.: erodes easily.
seepage. seepage.
75 Seepage, Piping, Favorable Fast intake, Piping, :Erodes easily.
Vona slope. erodes easily, seepage. erodes easily.:
seepage.
76, 77 Seepage, Piping, Slope Slope, Piping, Erodes easily.
Vona slope. erodes easily, fast intake, erodes easily.
seepage. seepage. ,
78 Seepage Low strength--- Peres slowly--- Peres slowly, Piping, :Peres slowly.
Weld slow intake. percs slowly. :
79, 80 Seepage Low strength--- Slope, Slope, Piping, Peres slowly.
Weld peres slowly. percs slowly, percs slowly.
slow intake.
81*:
Wiley Slope, Piping, Peres slowly--- Favorable Piping Erodes easily.
seepage. low strength.
Colby Seepage Low strength, Favorable Favorable Favorable Favorable.
piping. ,
See footnote at end of table.
WELD COUNTY, COLORADO, SOUTHERN PART 127
TABLE 12.--ENGINEERING PROPERTIES AND CLASSIFICATIONS--Continued
r TClassification Frag- : Percentage passing
Soil name and Depth USDA texture : —' ments : sieve number-- ;Liquid ; Plas •
-
map symbol : Unified AASHTO > 3 1 : 1 limit : ticity
_ ' _ inches: 4 10 1 40 1 200 1 1 index
In --r --7 Pct 1 : 1 Pct 1
56, 57 0-9 Clay loam CL A-6 0 :85-100 80-100180-95 170-80 : 25-40 1 10-20
Renohill 9-32 Clay, clay loam CL, CH A-7, A-6 0 :95-100 90-100:90-100175-95 1 35-65 : 20-35
32 Weathered --- --- : --- --- --- : --- : --- ---
bedrock.
i
58, 59 0-6 Loam CL-ML A-4 0-5 175-100 75-100 70-95 55-75 : 25-35 1 5-10
Shingle 6-18 Clay loam, loam CL A-6 0 :75-100 75-100 65-100 50-80 1 30-40 1 10-20
18 Unweathered --- --- --- 1 ___ ___ ___ ___ 1 ___ ___
bedrock.
60': :
Shingle 0-6 Loam CL-ML A-4 0-5 175-100 75-100 70-95 55-75 1 25-35 5-10
6-18 Clay loam, loam CL A-6 0 :75-100 75-100 65-100 50-80 : 30-40 10-20
18 Unweathered --- --- --- : ___ ___ ___ ___ 1 ___ -- •
-
bedrock.
Renohill 0-9 Clay loam CL A-6 0 185-100 80-100 80-95 70-80 : 25-40 1 10-20
9-32 Clay, clay loam CL, CH A-7, A-6 0 :95-100 90-100 90-100 75-95 : 35-65 : 20-35
32 Weathered --- --- ___ 1 ___ ___ ___ ___ 1 ___ : ___
bedrock. 1
.
61 0-11 Fine sandy loam ML, SM A-4 0 :95-100 90-100170-95 40-65 : 20-35 : NP-5
Tassel 11 Unweathered --- --- -- 1 ___ ___ 1 ___ : ___ 1 __ ___ ;
bedrock.
62, 63 0-6 Fine sandy loam SM, ML A-2, A-4 0-5 :75-100 75-100'70-90 30-60 : --- 1 NP
Terry 6-18 Fine sandy loam, SM, ML A-4 0 :75-100 75-100 70-85 40-60 1 --- I NP
sandy loam.
18-37 Fine sandy loam, SM A-2, A-4 0-5 75-100 75-100 70-85 25-50 --- 1 NP
sandy loam,
loamy fine
sand.
37 Weathered --- --- --- --- ---
---
bedrock.
64, 65 0-8 Loam CL-ML A-4 0-5 80-100 75-100 70-95 50-75 20-30 : 5-10
Thedalund
8-25 Clay loam, loam, CL-ML, A-6, A-4 0-5 80-100 75-100 70-95 ,40-80 25-35 5-15
very fine sandy CL,
loam. SM-SC,
SC
25 Weathered --- --- --- --- --- __- '
bedrock.
66, 67 0-5 Clay loam CL A-6 0-5 95-100 95-100 80-10070-80 30-40 10-15
Ulm 5-19 Clay loam, clay CL A-6, A-7 0-5 75-100 75-100 75-100 60-80 35-45 20-30
19-60 Clay loam CL A-6 0-5 75-100 75-100 75-100 60-80 30-40 15-20
•
68" 0-60 Variable --- --- --- --- --- --- --- --- ___
Ustic
Torriorthents
69, 70 0-8 Fine sand SM A-7 0 100 100 80-95 10-30 --- NP
Valent 8-60 Fine sand, sand SP-SM, SM A-2, A-3 0 100 95-100 75-90 5-20 --- NP
71":
Valent 0-8 Fine sand SM, A-2 0 100 100 80-95 10-30 --- NP
8-60 Fine sand, sand SP-SM, SM A-7, A-3 0 100 95-100 75-90 5-20 --- NP
Loup , 0-16 Loamy sand SM A-2 0 100 100 50-100 15-30 --- NP
16-60 Fine sand, loamy SF-SM, SM A-2, A-3 0 100 100 65-100 5-20 --- NP
sand, sand.
See footnote at end of table.
128 SOIL SURVEY
TABLE 12.--ENGINEERING PROPERTIES AND CLASSIFICATIONS--Continued
ail name and Depth USDA texture Classification Frag- 1 Percentage passing
r---
menumber--nts
aap symbol Unified AASHTO 3s sieve Liquid Plas-
, limit ticity
inches' 4
In —T Pet—-7 10 T 40—} 200 Pct index
72, 73, 74 0-6 Loamy sand SM A-2 -100 60-90 3 -- NP
Vona 6-28 Fine sandy loam, SM A-2, A-4 0 100 ;90-100 60-90 35 0
sandy loam. 30-45 --- NP
28-60 Sandy loam, SM A_ '
2 0 ; 100 ;90-100 50-85 15-30 NP
loamy sand. ---
75, 76, 77 0-6 Sandy loam '
Vona SM A-2, A-4 0 100 :90-100 60-90 30-45 --- NP
6-28 Fine sandy loam, SM A-2, A-4 190-100 60-90 30-45
0 100 NP
sandy loam. ---
28-60 Sandy loam, SM A-2 0 100 190-100 50-85 15-30 1 NP
loamy sand. ---
78, 79, 80 0-8 Loam
Weld M A-4 0 100 1 ;95-100 85-100 60-85 20-30 NP-10
CL-ML
8-15 Silty clay loam, CL
A-6, A-7 0 100 1 100 95-100 85-95 35-50 15-30
silty clay.
15-60 Silt loam, loam CL-ML, CL A-4, A-6 0 100 ;95-100 85-100 60-85 ; 20-35 5-15
81*, 82*, 83':
•
Wiley 0-11 Silt loam CL-ML, CL A-4, A-6 0 ; 100 ' 100 90-100 70-90 ; 25-35 5-15
11-60 Silty clay loam, CL A-6 0 ; 100 100 90-100 70-95 25-35 10-20
silt loam.
Colby 0-7 Loam I
cL-ML A-4 0 100 100 90-100 85-1001 25-30 5-10
7-60 Silt loam, loam CL-ML A-4 0 100 100 90-100 85-100; 25-30 5-10
* See map unit description for the composition and behavior of the map unit.
•
•
0
1
i
WELD COUNTY, COLORADO, SOUTHERN PART 131
TABLE 13.--PHYSICAL AND CHEMICAL PROPERTIES OF SOILS--Continued
Risk of corrosion Erosion;Wind
Soil name and Depth Permea- ;Available Soil Salinity Shrink- factors:erodi-
map symbol bility 1 water reaction swell Uncoated Concrete ---7---;bility
:capacity potential steel K 1 T !group
In In/hr 1 In/in QH Mmhos/cm
60*: , :
Renohill ; 0-9 0.2-0.6 :0.17-0.21 6.6-7.8 <2 Moderate High Low 0.37.1 3 6
9-32 0.06-0.2 :0.14-0.16 6.6-8.4 <2 High High Low 0.321
61 0-11 2.0-6.0 0.16-0.18 7.4-8.4 : <2 Low High Low 0.24: 1 3
Tassel 11 --- --- --- 1 --- '
62, 63 0-6 2.0-6.0 0.13-0.15 7.0-7.8 1 <2 Low Moderate Low 0.20: 2 ! 3
Terry . 6-18 2.0-6.0 0.13-0.15 7.0-7.8 <2 Low Moderate Low 0.20:
18-37 2.0-6.0 0.13-0.15 7.9-8.4 1 <2 Low High Low 0.20:
37 --- --- --- I --- I --- :
64, 65 0-8 0.6-2.0 0.16-0.18 7.9-8.4 <2 Low High Low 0.32: 2 1 4L
Thedalund 8-25 0.6-2.0 0.16-0.18 7.9-8.4 <2 Low High Low 0.321
66, 67 0-5 0.6-2.0 0.16-0.18 6.6-7.8 --- Low High Low 0.321 5 : 6
Ulm 5-19 0.06-0.2 0.19-0.21 7.4-8.4 <2 High High Low 0.371
19-60 0.6-2.0 0.19-0.21 7.9-8.4 <2 Moderate High Low 0.37!
68* 0-60
Ustic
Torriorthents
: !
69, 70 0-8 : 6.0-20 0.07-0.12 6.6-7.3 --- Low :Low Low 0.10 5 1
Valent 8-60; 6.0-20 0.05-0. 10 6.6-7.8 , <2 Low 1Low Low 0.10;
71*:
- Valent 0-8 1 6.0-20 0.07-0.12 6.6-7.3 --- Low Low Low 0.101 5 : 1
8-60! 6.0-20 0.05-0.10 6.6-7.8 <2 Low Low Low 0.101
Loup 0-16 6.0-20 0.10-0.14 6.6-8.4 <2 Low High Low 0.171 5 ; 2
16-60 6.0-20 0.06-0.08 7.4-8.4 <2 Low High Low 0.171
72, 73, 74 0-6 6.0-20 0.09-0.11 6.6-7.3 --- Low Low Low 0.101 5 1 2
Vona 6-28 2.0-6.0 0.12-0.14 6.6-8.4 <4 Low High Low 0.101 1
28-60 6.0-20 0.08-0.11 7.4-8.4 <4 Low High Low 0.101
75, 76, 77 0-6 2.0-6.0 0.11-0.13 6.6-7.3 --- Low Low Low ;0.101 5 3
Vona 6-28 2.0-6.0 0.12-0.14 6.6-8.4 <4 Low High Low :0.101
28-60 6.0-20 0.08-0..11 7.4-8.4 <4 Low High Low ;0.101
78, 79, 80 0-8 0.6-2.0 0.16-0.21 6.6-7.3 <2 Low Low Low :0.321 5 6
Weld 8-15 0.06-0.2 0. 19-0.21 6.6-7.8 <2 High Moderate Low 10.28
15-60 0.6-2.0 0.16-0.21 7.4-8.4 <2 Low High Low 10.28
81*, 82*, 83*:
Wiley 0-11 0.6-2.0 0.19-0.21 7.4-7.8 <2 Low High Low :0.37 5 : 4L
11-60 0.6-2.0 0.19-0.21 7.9-8.4 <2 Moderate High Low :0.37
Colby 0-7 0.6-2.0 0.20-0.24 6.6-8.4 <2 Low Moderate Low ;0.37 5 1 4L
7-60 0.6-2.0 0.17-0.22 7.4-8.4 : <2 Low Moderate Low ;0.37
* See map unit description for the composition and behavior of the map unit.
WELD COUNTY, COLORADO, SOUTHERN PART 133
TABLE 14.--SOIL AND WATER FEATURES--Continued
: I Flooding I High water table Bedrock
Soil name and :Hydro-; : I Potential
map symbol : logic: Frequency : Duration :Months Depth Kind Months Depth Hard- frost
group ness action
Ft In
• ,
— __
36*: ,
Shingle I D :None ; --- >6.0 --- 10-20 Rip- Low.
pable
37, 38 I B ;None --- --- >6.0 --- --- 20-40 Rip- Low.
Nelson
noble
39, 40, 41 , 42,
43 : C :None --- --- >6.0 --- --- >60 --- Moderate.
Nunn
44, 45, 46, 47,
48 I B !None __- --- >6.0 --- --- >60 --- Low. �'.
Olney .
49 I A :None --- --- >6.0 --- --- >60 --- Low.
Osgood
50, 51 , 52, 53----: B :None --- >6.0 --- >60
0tero •
--- --- Low.
54, 55 : B :None to rare --- --- >6.0 --- --- >60 --- Moderate.
Paoli
56, 57 ; C ;None --- --- >6.0 --- --- 20-40 Rip- Low.
Renohill
gable
58, 59 I D :None --- --- >6.0 --- --- 10-20 Rip- Low.
Shingle gable
6C
SL .gle I D :None --- --- >6.0 --- --- 10-20 Rip- Low.
pable
Renohill : C :None I --- --- >6.0 --- --- 20-40 Rip- Low.
gable
61 I D :None : --- --- >6.0 --- --- 10-20 Rip- Low.
Tassel
noble
62, 63 I B :None ; --- --- >6.0 --- --- 20-40 Rip- Low.
Terry :
pable
,
64, 65 I C ;None : --- --- >6.0 --- --- 20-40 Rip- Low.
Thedalund
gable
, r ,
66, 67 : C ;None I --- --- >6.0 --- --- >60 --- Low.
Ulm
68* ; A ;None --- --- >6.0 --- --- >60 --- Low.
Ustic
Torriorthents
69, 70
A :None --- >6.0
--- --- --- >60 ; --- Lou.
Valent
71*•
Valent I A :None --- --- >6.0 --- --- >60 ; --- Low.
Loup I D ;Rare to Brief Mar-Jun +.5-1.5 Apparent Nov-May >60 --- Moderate.
I common.
72, 73, 74, 75, I I
,
76, 77 I B :None --- --- >6.0 --- --- >60 ; --- Low.
Vona
ee footnote at end of table.
Hello