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PUEBLO AREA, COLORADO <br />The water table is at a depth of 1.5 to 3 feet. The sur- <br />face layer is ]ow to high in content of salts. <br />The native vegetation is inland saltgrass, alkali <br />sacaton, tamarisk, and willow. Capability units IIIw•-2, <br />irrigated, and VI+v-1, nonirrigated; Salt Meadow <br />range site. <br />Limon $eries- <br />The Limon series consists of deep, we]]-drained soils. <br />These soils formed on alluvial fans and terraces in <br />clayey alluvium. The slope is 0 to 5 percent, and eleva- <br />tion is 4,300 to 5,100 feet. The average annual precipi- <br />tation is 12 inches. The average anntaal temperature is <br />53°F, and the f]•ost-free season is 145 to 175 days. The <br />native vegetation is mainly plains grasses. <br />In a representative profile the surface layer is gray- <br />ish-brown silty clay loam about 4 inches thick. The sub- <br />urface layer is light brownish-gray silty clay about <br />inches thick. The underlying material is light <br />'ownish-gray silty clay about 17 inches thick over <br />light bro++'nish-gray silty clay loam that extends to a <br />depth of 60 inches or more, <br />Permeability is slow, and the available water ca- <br />pacity is high. The surface and subsurface layers are <br />moderately alkaline and the underh•ing material is <br />moderately alkaline or strongly alkaline. The root zone <br />extends to a depth of more than 60 inches. These soils <br />are used for grazing and irrigated crops. <br />Representative profile of Limon silty clay loam, 0 to <br />2 percent slopes, in grass, 2.5 miles west and 0.2 mile <br />north of the southeast corner of sec. 3G, T. 25 S., R. <br />60 W. <br />A-0 too inches, grayish-brown (2.5YR 5/2) silty clay loam, <br />dark grayish brown (]OYR 4/2) when moist; weak, <br />fine and very fine, granular structure; slightly hard, <br />firm; sticky and plastic; calcareous; moderately alka- <br />line; abrupt, smooth boundary. <br />AC-1 to ]8 inches, light brownish-gray (2.5Y 6/2) silty <br />clay, dark grayish brown (2.5Y 9/2) when moist; weak, <br />medium and fine, subangular blocky structure; hard, <br />firm; sticky and plastic; calcareous; moderately alka- <br />line; abrupt, smooth boundary. <br />C1-18 to 35 inches, light brownish-gray (2.5Y 6/2) silty <br />clay, dark grayish brown (2.SY 4/2) when moist; weak, <br />fine and very fine, subangular blocky structure; hard, <br />firm; sticky and plastic; calcareous; fine filaments and <br />threads; crystalline g}•psum; moderately alkaline; <br />gradual, smooth boundary. <br />C2-35 to 60 inches, light brownish-gray (2.5Y 6/2) silty <br />clay loam, dark grayish brown (2.5Y 4/2) when moist; <br />massive; slightly hard, friable; sticky and plastic; <br />strongly calcareous; moderately alkaline. <br />. These soils range from moderately alkaline to strongly <br />alkaline. They range from clay to silty clay loam. The AC <br />and C horizons have weak blocky and weak platy structure <br />or are massive. <br />nA-Limon silt~.cha~ ~o~am _ Q~to~,2~, n alnnn~, <br />'I ]s solris on alruvl~ of ns and art races;n thP a north- <br />centraland southeastern parts of the survey area. The <br />areas cover as much as 1,000 acres. This soil has the <br />profile described as representative of the series. <br />Included with this soil in mapping are areas of Razor <br />soils that make up about 5 percent of the acreage. <br />Runoff is medium. The hazard of erosion is generally <br />moderate, but it is severe in places. Deep gullying and <br />soil piping are hazards where the range is overgrazed. <br />21 <br />The soil generally is not subject to flooding, but long, <br />narrow, nearly level areas along Dry Creek, Haynes <br />Creek, and Kramer Creek and similar areas are subject <br />to frequent, brief flooding. <br />This soil is difficult to till because it is cloddy when <br />dry and sticky and plastic when wet. The native grasses <br />are mainly galleta, blue grams, and alkali sacaton. Capa- <br />bility units IIe-1, irrigated, and Vle-2, nonirrigated; <br />Salt Flats range site. <br />LnR-Limon silty clay loam, 2 to 5 percent slopes. <br />This soil is in long, narrow areas between the Arkansas <br />River and Fountain Creek. The areas cover as much <br />as 300 acres, This soil has a profile similar to the one <br />described as representative of the series. <br />Included with this soil in mapping are areas of Razor <br />soils that make up about 20 percent of the acreage. <br />Runoff is rapid, and the haza]•d of erosion is high. <br />The native grasses are mainly alkali sacaton, blue <br />grams, and galleta. Capability units IIIe-2, irrigated, <br />and VIe-2, nonirrigated; Salt Flats range site. <br />Lo.4-Limon silty clay, 0 (0 2 percent slopes. This <br />soil is on alluvial fans and terraces in the north-central <br />and southwestern parts of the survey area. The areas <br />cover as much as 800 acres. This soil has a profile <br />similar to the one described as 1epresentative of the <br />series, but the surface layer is silty clay and the under- <br />lying material is strongly alkaline. About 15 percent <br />of the surface area is covered by barren slickspots. <br />Included with this soil in mapping are areas of <br />Apishapa and Haverson soils that make up about 10 <br />percent each of the acreage. <br />Runoff is slow, and the hazard of erosion is moderate. <br />This soil is difficult to till because it is sticky and <br />plastic when wet. The native vegetation is mainly <br />alkali sacaton, blue grams, galleta, and greasewood. <br />Capability units IIls-1, irrigated, and VIe-2, ]]onirri- <br />gated ; Salt Flats range site. <br />Lv)~-Limon silty clay, 0 to 5 percent slopes, gullied. <br />This soil is in the central part of the survey area. The <br />areas are irregularly shaped and cover as much as 600 <br />acres. This soil has a profile similar to the one described <br />as representative of the series, but the surface layer is <br />silty clay and the areas are dissected by gullies that <br />are 2 to 10 feet deep. <br />Included with this soil in mapping are areas of Mid- <br />way soils and Shale outcrop that make up about 15 <br />percent of the acreage. <br />Runoff is rapid, and the hazard of erosion is high. <br />Range seeding is difficult because of the deep gullies. <br />Capability unit VIIe-1, nonirrigated; not in a range <br />site. <br />Manvel Series <br />The Manvel series consists of deep, well-drained soils. <br />These soils formed on alluvial fans in silty coluuvial aml <br />alluvial material that weathered mainly from limestone. <br />The slope is 0 to 5 percent, and elevation is 4,900 to <br />5,800 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 175 days. The native <br />vegetation is mainly plains grasses. <br /> <br />