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<br />16 SOIL SURVEY
<br />than 60 inches. They are used for grazing, hay, and inches. They are used for grazing, hay, and irrigated
<br />irrigated crops.
<br />Representative profile of Glenberg fine sandy loam,
<br />in an area of Glenberg-Haverson fine sandy looms, in
<br />native grass, 1,200 feet north and 800 feet east of the
<br />center of sec. 12, T. 19 S., R. 60 W.
<br />Al-0 to 5 inches, light brownish-gray (lOYR 6/2) fine
<br />sandy loam, dark grayish brown (lOYR 4/2) when
<br />moist; weak, thin, platy structure; slightly hard, very
<br />friable; nonsticky and nonplastic; calcareous; moder-
<br />ately alkaline; abrupt, smooth boundary.
<br />C-5 to 60 inches, pale-brown (lOYR 6/3) fine sandy loam
<br />stratified with layers, less than 4 inches thick, of loamy
<br />fine sand and silt loam, brown (lOYR 513) when moist;
<br />massive; slightly hard, very friable; nonsticky and
<br />nonplastic; calcareous; moderately alkaline.
<br />[n places there are a few, One, distinct, strong-brown
<br />(7.6YR 5/6, moist) mottles below a depth of 21 inches. The
<br />Al horizon is fine sandy loam to loamy fine sand 4 to 12
<br />inches thick. The G horizon is mainly fine sandy loam thinly
<br />stratified with loamy fine sand and loam.
<br />Gh-Glenber -Hav -
<br />p x is o ow erraces a ong a revers an tree s. t
<br />is made up of about 60 percent Glenberg fine sandy
<br />loam and 30 percent Haverson fine sandy loam. The
<br />slope is 0 to 2 percent. Areas of this complex are
<br />elongated and cover as much as 300 acres. The Glenberg
<br />soil is near the stream, and the Haverson soil is away
<br />from the stream.
<br />The Glenberg soil in this complex has the profile de-
<br />scribed as representative of the Glenberg series. The
<br />Haverson soil has a profile similar to the one described
<br />as representative of the Haverson series, but the sur-
<br />face layer is fine sandy loam and the soil is redder.
<br />Included with these soils in mapping are areas of
<br />Las Animas soils that make up about 10 percent of the
<br />acreage.
<br />Runoff is slow, and the hazard of soil blowing is mod-
<br />erate. These soils are subject to occasional, brief
<br />flooding.
<br />These soils have potential for nonirrigated pasture.
<br />They are easily tilled. The native vegetation is western
<br />wheatgrass, inland saltgrass, cottonwood, and tama-
<br />risk. Capability units IIe-1, irrigated, and VIe-1, non-
<br />irrigated; Sandy Bottomland range site.
<br />Haverson Series
<br />The Haverson series consists of deep, well-drained
<br />soils. These soils formed on flood plains in loamy allu-
<br />vium. The slope is 0 to 2 percent, and elevation is
<br />4,300 to 4,800 feet. The average annual precipitation
<br />is 12 inches. The average annual temperature is 53° F,
<br />and the frost-free season is 145 to 175 days. The
<br />native vegetation is mainly plains grasses.
<br />In a representative profile the surface layer is light
<br />brownish-gray silt loam about 6 inches thick. The
<br />underlying material in the upper 9 inches is light
<br />brownish-gray silt loam. Below that it is pale-brown
<br />stratified silt loam, loam, and fine sandy loam that
<br />extends to a depth of 60 inches or more.
<br />Permeability is moderate, and the available water
<br />capacity is high. These soils are moderately alkaline.
<br />Their root zone extends to a depth of more than 60
<br />crops.
<br />Representative profile of Haverson silt loam, in
<br />native grass, 0.35 mile north and 0.05 mile east of the
<br />southwest corner of sec. 4, T. 26 S., R. 60 W.
<br />A-0 to 6 inches, light brownish-gray (lOYR 8/2) silt loam,
<br />dark grayish brown (lOYR 4/2) when moist; weak, thin,
<br />platy structnre parting W weak, fine, granular; soft,
<br />friable; nonsticky and slightly plastic; calcareous; mod-
<br />erately alkaline; abrupt, smooth boundary.
<br />Cl-6 to 15 inches, light brownish-gray (lOYR 8/2) silt
<br />loam, dark grayish brown (lOYR 4/2) when moist;
<br />weak, medium, subangular blocky structure; slightly
<br />herd, friable; nonsticky and slightly plastic; calcareous;
<br />moderately alkaline; clear, smooth boundary.
<br />C3-15 to 60 inches, pale-brown (lOYR 6/3) stxetifled silt
<br />loam, loam, and fine sandy loam, brown (10YR 4/3)
<br />when moist; massive; hard, friable; nonsticky and
<br />slightly plastic; calcareous; moderately alkaline.
<br />The A horizon is loam, silt loam, silty clay loam, or One
<br />sandy loam 3 to 12 inches thick. The C horizon is stratified
<br />silt loam, loam, fine sandy loam, and silty clay loam.
<br />Ha-Haverson silt loam. This soil is on ]ow terraces
<br />or bottoms of intermittent drainageways in the eastern
<br />part of the survey area. The areas are elongated and
<br />cover as much as 200 acres.
<br />Included with this soil in mapping are small areas of
<br />Glenberg and Bankard soils.
<br />Runoff is slow, and the hazard of erosion is slight.
<br />The soil is subject to frequent, very brief flooding.
<br />This soil has potential for nonirrigated pasture. The
<br />native vegetation is mainly western wheatgrass, blue
<br />grams, alkali sacaton, and fourwing saltbush. Capa-
<br />bility units IIw-1, irrigated, VIw-2, nonirrigated;
<br />Saline Overflow range site.
<br />Heldt Series
<br />The Heldt series consists of deep, well-drained soils.
<br />These soils formed on alluvial fans in clayey alluvium.
<br />The slope is 2 to 6 percent, and elevation is 4,800 to
<br />5,600 feet. The average annual precipitation is 12
<br />inches. The average annual temperature is 53° F, and
<br />the frost-free season is 145 to 176 days. The native
<br />vegetation is mainly short plains grasses.
<br />In a representative profile the surface layer is light
<br />brownish-gray silty clay loam about 3 inches thick.
<br />The subsoil is light yellowish-brown silty clay about
<br />11 inches thick.The underlying material is light yellow-
<br />ish-brown silty clay about 9 inches thick over pale-
<br />yellow silty clay that extends to a depth of 60 inches
<br />or more.
<br />Permeability is slow, and the available water capac-
<br />ity is high. These soils are moderately alkaline. Their
<br />root zone extends to a depth of 40 inches or more. They
<br />are used for grazing.
<br />Representative profile of Heldt silty clay loam, 2 to
<br />6 percent slopes, in native grass, 0.3 mile east of the
<br />west quarter corner of sec. 14, T. 20 S., R. 65 W.
<br />A 1-0 to 3 inches, light brownish-gray (2.6Y 6/2) silty clay
<br />loam, dark grayish brown (2bY 4/2) when moist; weak,
<br />thin, platy structure parting to moderate, very fine,
<br />granular; slightly hard, firm; sticky and plastic; cal-
<br />careous; moderately alkaline; abrupt, smooth boundary.
<br />BZ--3 to 14 inches, light yellowish-brown (2.bY 6/4) silty
<br />clay, olive brown (2.6Y 4/4) when moist; moderate,
<br />medium, prismatic atractare parting to moderate, medi-
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