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• <br />U.S. Department of Agriculture <br />i Soil Conservation Service <br />------------------------------ <br />n <br />u <br />Page 1 <br />01/01/80 <br />SOIL DF.SCR7PTI0N REPORT <br />SURVEY AREA - RIDGWAY AP.EA, COLORADO PARTS OF DELTA, GUNNIS <br />-------------------------------------------------------------------------- <br />Map Unit <br />Symbol Description <br />------------------------------------------------------------------------- <br />M1A MESA CLAY LOP.M, 0 TO 2 PERCENT SLOPES <br />The Mesa soil is deep and well drained on mesa tops, high <br />terraces, and pediment surfaces. It formed in alluvium, <br />residuum, and pedisediments from mixed sources. Typically, <br />the surface layer is r_lay loam 9 inches thick. The subsoil is <br />clay loam 10 inches thick. The next layer is clay loam 6 <br />inches thick. The substratum to a depth of 60 inches is <br />gravelly loam. Permeability is moderately slow and the <br />available water capacity is moderate. Surface runoff is slow <br />to moderate and the hazard of water erosion is slight to <br />moderate. Tlie effective rooting depth is 60 or more inches. <br />This soil is NON HEL. <br />Land Capability Unit NIRR 6c, IRR 2e. <br />MoA MESA GRAVELC~Y CLAY LOAM, 0 TO 2 PERCENT SLOPES <br />The Mesa soil. is deep and well drained on mesa tops, high <br />terraces, and pediment surfaces. It formed in alluvium, <br />residuum, and pedisediments from mixed sources. Typically, <br />the surface layer is gravelly clay loam 4 inches thick. The <br />subsoil is gravelly clay loam 10 inches thick. The upper 6 <br />inches of the substratum is gravelly clay loam. The lower <br />part to a depth of 60 inches is very gravelly clay loam. <br />Permeability is moderately slow and the available water <br />capacity is moderate. Surface runoff is slow to moderate and <br />the hazard of water erosion is slight to moderate. The <br />effective rooting depth is 60 or more inches. This soil is <br />NON HF'L. <br />Land Capability Unit NIRR 6c, IRR 2e. <br />Ru TYPIC TORRIORTHENTS, VERY COBBLY, 12 TO 65 PERCENT SLOPES <br />The Typic Torriorthents soil is shallow to deep and well <br />drained on mesa sides and toeslopes. It formed in alluvium <br />and r_ol]uvium from interbedded sandstone and shale. <br />Torriorthents are highly variable, with little or no soil <br />development. Textures range from sandy loam to clay. These <br />soils are NON HEL. <br />Land Capability Unit NIRR 7e. <br />------------------------------------------------------------------------- <br />Category Codes: SOI <br />U.S. Department of Agriculture Page 1 <br />Soil Conservation Service 01/01/80 <br />------------------------------------------------------------------------ <br />