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12/97 <br /> 50E =Cochetopa loam, warm, 12 to 25 percent slopes <br /> Setting <br /> Depth class : very deep <br /> Drainage class : well drained <br /> Landform: mountains and hills <br /> Position on landform: backslopes, shoulders, and toeslopes <br /> Parent material : alluvium and colluvium derived from shale <br /> Eleva'cion : 6, 500 to 9, 000 feet <br /> Air temperature : 37 to 40 degrees F <br /> Annual precipitation: 18 to 28 inches <br /> Frost-free period: 30 to 55 days <br /> Composition <br /> Cochetopa soil and similar inclusions : 90 percent <br /> Contrasting inclusions: 10 percent <br /> Contrasting Inclusions <br /> Clayburn soils on all landform positions <br /> Somewhat poorly to very poorly drained Aquolls and Aquents soils in <br /> springs, marshes, seeps, and beaver ponds on slumped landscapes and/or <br /> adjacent to irrigation ditches <br /> Binco soils on south-facing backslopes, shoulders, and summits <br /> Passar soils on backslopes <br /> Similar Inclusions <br /> Buckskin soils <br /> Routt soils <br /> Gourley soils <br /> Typical Profile <br /> Surface layer: <br /> 0 to 5 inches=grayish brown loam <br /> Subsurface layer: <br /> 5 to 20 inches=grayish brown loam <br /> Subsoil : <br /> 20 to 30 inches=brown clay <br /> 30 to 40 inches=yellowish brown clay <br /> Substratum: <br /> 40 to 65 inches=pale brown clay <br /> Soil Properties and Qualities <br /> Permeability: slow <br /> Available water capacity : high <br /> Potential rooting depth: 60 or more inches <br /> Runoff : very high <br /> Hazard of water erosion: very high <br /> Hazard of soil blowing : low <br /> Major Current Uses <br /> nonirrigated crops <br />