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PUEBLO AREA, COLORADO
<br />Runoff is slow, and the hazard of erosion is moderate.
<br />Most of the act•eage is used for irrigated and dryland
<br />alfalfa. The native vegetation is mainly needlegrass,
<br />wheatgrass, and some cottonwoods, and Gambel oak
<br />along the creek channels. Capability units IIe-1, ir-
<br />rigated, IIIe-1, nonirrigated; Loamy Foothills range
<br />site.
<br />Travessilla Series
<br />The Travessilla series COI1sIFIS of shallow, wcll-
<br />drained soils. These soils formed on uplands in
<br />residuum that weathered from sandstone. They are
<br />underlain by bedrock between depths of 10 and 20
<br />inches. The slope is 1 to 00 percent, and elevation
<br />is -1,500 to 5,500 feet. The average annual precipitation
<br />is 12 inches. The average annual temperatut•e is 53° F,
<br />and the frost-free season is 130 to 175 days. The native
<br />vegetation is mainly plains grasses and juniper.
<br />In a representative profile the surface layer is pink-
<br />-gray sandy loam about 6 inches thick. The sub-
<br />surface layer is light-brown sandy loam about 4 inches
<br />thick. The underlying material is pale-brown loam
<br />about 4 inches thick. Hard sandstone is at a depth of
<br />about 19 inches.
<br />Pel•meability is moderate, and the available water
<br />capacity is low. The sul•face layer is mildly alkaline,
<br />and the underlying material is moderately alkaline.
<br />The root zone extends to a depth of 10 to 20 inches.
<br />These soils are used for grazing, watershed, and wild-
<br />life habitat.
<br />Representative profile of Travessilla sandy loam, 1
<br />to 9 pel•cent slopes, in native grass, 0.3 mile North and
<br />0.15 mile east of the southwest corner of sec. 20, T.
<br />26 S., R. 60 W.
<br />Al-0 to 6 inches, pinkish-gray (7.5YR 6/2) sandy loam,
<br />dark brown (7.5]'R 4/2) when moist; weak, thin, platy
<br />structure; slightly hard, very friable; nonsticky and
<br />nonplastic; few, small, angular pebbles; weakly cnl-
<br />rareous; moderately alkaline; clear, smooth boundary.
<br />AC-G to ]0 inches, light-brown (7.SYR 6/4) sandy loam,
<br />dark brown (7.5YR 4/9) whri moist; week, floc, sub-
<br />angular blocky structure; slightly hard, very friable;
<br />nonsticky and slightly plastic; few, small, angular
<br />pebbles; strongly calcareous; moderately alkaline; clear,
<br />smooth boundary.
<br />Cce-10 to 14 inches, pale-brown (10]'R 6/:;) loam, brown
<br />(10]'R 5/3) when moist; nlassive• slig'tly hard, veryy
<br />friable; nonsticky and slightly plastic; strongly cal-
<br />careous; concentrations of segregated lime in places;
<br />moderately alkaline; abrupt, smooth boundary.
<br />R-14 inches, herd Dakota sandstone.
<br />• The A end C horizons are loam or sandy loam. The A
<br />horizon is 4 to 7 inches thick and in places is noncalcareous.
<br />In places the Cca horizon has coarse fragments that hove
<br />coatings of lime on their underside. Depth to the R horizon
<br />ranges from 30 to 20 inches. The content of coarse frag-
<br />ments, mostly angular pebbles and channery pieces of sand-
<br />stone, ranges from about 10 to 30 percent.
<br />ToD-Travessilla sandy loam, 1 l0 9 percent slopes.
<br />This soil is in the southern and western parts of the
<br />survey area in long areas that cover as much as 1,000
<br />acres. This soil has the profile described as 1•epresenta-
<br />tive of the series, but on about 30 percent of the
<br />acreage the surface layer is loam and slopes are convex
<br />and about 3 percent.
<br />Included with this soil in mapping sre areas of
<br />Kim loam and Rock outcrop; e.
<br />about 10 percent of the acreage.
<br />Runoff is rapid, and the hazar
<br />This soil has potential for re
<br />wildlife use if the habitat can be
<br />vegetation is mainly cactus, yucc,
<br />and small juniper trees. Capabi]
<br />irrigated; Sandstone Breaks ran;
<br />TrG-Travessilla-Rock outcrol
<br />percent slopes. This complex is
<br />nearly vertical canyon walls in
<br />Pueblo County. It is made up
<br />Travessilla sandy loam and 40 )
<br />Areas of this complex are elmlgal
<br />ns 800 acres.
<br />The Travessilla soil in this c
<br />similar to the mle described as
<br />Travessilla series.
<br />Included with these soils in n
<br />41'iley loam and Kim loam; then
<br />percent of the acreage.
<br />Runoff is rapid, and the hazar
<br />Most of the acreage is steep ar
<br />only limited Krazing. The native
<br />a sparse stand of grass and scatte
<br />Capability unit VIIs-3, nonirrig
<br />in Sandstone Breaks range sits
<br />in a range site.
<br />35
<br />of these make up
<br />of erosion is slight.
<br />reation use and for
<br />reproved. The native
<br />grams, needlegrass,
<br />y unit VIIs-3, non-
<br />site.
<br />complex, 30 to 90
<br />on side slopes and
<br />le southern part of
<br />f about 40 percent
<br />rcent Rock outcrop.
<br />I and cover as much
<br />lax has a profile
<br />esentative of the
<br />!ping are areas of
<br />make up about 20
<br />of erosion is slight.
<br />rocky and provides
<br />egetation is mainly
<br />Id stands of juniper.
<br />ed; Travessilla soil
<br />Rock outcrop not
<br />Valent Series
<br />The Valent series consists o deep, excessively
<br />drained soils. These soils formed n uplands in eolian
<br />sand. The slope is 1 to 7 parse t, and elevation is
<br />4,900 to 5,200 feet. The avel•age onus! precipitation
<br />is 12 inches. The avel•age aortae! t mperature is 52° F,
<br />and the ft•ost-free season is 130 to 60 days. The native
<br />vegetation is mainly mid plains g asses.
<br />In a representative profile the s 1•face layer is light
<br />bro~cmish-gray loamy sand about 4 inches thick. The
<br />unciel•lying material is pale-brown fine sand about 31
<br />inches thick over very pale brow fine sand that ex-
<br />tetlds to a depth of 60 inches or m re.
<br />Pet•meability is very rapid, and the available water
<br />capacity is low. The surface Jaye is mildly alkaline,
<br />and the tlndel•lying material is ne trot. The root zone
<br />extends to a depth of more than 6 inches. These soils
<br />are used for grazing.
<br />Representative profile of Vale It loamy sand, in
<br />grass, 0.2 mile west and 0.35 mile south of the north-
<br />east col•Iler of sec. 22, T. 20 S., R 60 W.
<br />Al-0 to 9 inches, light brownish-g ay (lOYR 6/2) loamy
<br />send, grayish brown (lOYR 6/ ) when moist• single
<br />grained; loose; nonsticky and n nplastic; mildly alka-
<br />line; clear, smooth boundary.
<br />CI-9 to 35 inches, pale-brown (l0Y 6/3) fine sand, brown
<br />(lOYR 6/3) when moist; sing! grained; loose; non-
<br />sticky and nonplastic; mildly al -aline; diffuse, smooth
<br />boundary.
<br />C?-35 to GO inches, very pale brown (lOYR 714) fine sand,
<br />yellowish brown (]OYR b/4) when moist; single
<br />grained; loose; nonsticky and n nplastic; neutral.
<br />The A horizon is loamy fine son or fine sand d to 10
<br />inches thick. The C horizon is sand r fine sand. In places,
<br />lime is at a depth of 40 to 60 inche .
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