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15 <br /> Custer County Area, Colorado <br /> The main (imitation for homesites is slope. Designs <br /> of more than 32 inches. Surface runoff is medium, need to be modified for septic tank absorption fields. <br /> ana the hazard of erosion is high to very high.formed in Good ground cover should be maintained during <br /> The Coutis soil is deep and well drained. a l <br /> construction to limit the risk of erosion.The Coutis soil is <br /> allu vium and coliuvium.Typically, the surface ay <br /> is a good source of topsoil. <br /> dark brown sandy loam 11 inches thick The underlying This complex is in capability subclass Vie, nonirrigated. <br /> material is dark brown sandy loam 37 inches thick. The <br /> substratum is brown gravelly loam to a depth of 60 <br /> inches or more. The soil is slightly acid to a depth of 11 12--Gelkie sandy loam, 1 to 10 percent slopes. <br /> inches and neutral below that depth. This is a deep, well drained soil on fans and terraces. It <br /> Permeability of the Coutis soil is moderately rapid; and <br /> formed in alluvium (fig. 3). Elevation is 7,900 to 9,300 <br /> the available water capacity is moderate. The effective feet. The average annual precipitation is 15 to 20 inches, <br /> rooting depth is 60 inches or more. Surface runoff is _ the average annual air temperature-is 40 to 44 degrees <br /> medium;and the hazard of erosion is high. F, and the frost-free season is 55 to 75 days. <br /> Most of the acreage of this complex is rangeland. Typically, the surface layer is dark brown sandy loam <br /> The potential native vegetation is mainly 13 inches thick. The subsoil is brown sandy clay loam 2 <br /> needleandthread, western wheatgrass, Arizona fescue, inches thick over brown cobbly sandy clay loam 25 <br /> and mountain muhly. As the range deteriorates,limstem muhly, <br /> inches thick The substratum is pink very gravelly sandy <br /> grama, gray horsebrush, sleepyg loam to a depth of 60 inches or more. The soil is neutral <br /> rabbitbrush, and snakeweesystem cross fencing help to a depth of 28 inches and moderately alkaline and and <br /> using a planned grazing calcareous below that depth. in are areas of Libeg <br /> to prevent range deterioration and promote the Included with this soil in mapping <br /> production of the more desirable plant species. In extremely cobbly sandy loam on terrace edges. They <br /> renovating, seed should be drilled into a well prepared, make up about 10 percent of the map unit_ <br /> firm, weed-free seedbed. <br /> 1' <br /> • . r <br /> � <br /> T. <br /> percent slopes. <br /> in Mountain Loam range site on tan along east side of wet Mountain Valley. <br /> Figure 2.—Sel�e de sandy <br /> C•tuisto Range is in background. <br />