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<br />Group II (B 1 uel <br /> <br />This group consist of five map units: 5, 7, 17, 19, and 22. <br /> <br /> <br />Soils - Group I I [Blue] <br />Alluvial fans - Rangeland and irrigated <br />crop 1 ands. <br /> <br />Ma.p Unit 5 - Typic Haplargids, loamy--Typic Torriorthents, skeletal; <br />nearly level and gently sloping. <br /> <br />This map unit constitutes 7.6 percent of the basin. It is only in the <br />Rio Grande Basin. The soils in this unit occupy alluvial fans, terraces <br />and floodplains. The soils are formed from mixed alluvium. <br /> <br />Elevations range from about 7,500 to 8,000 feet (2,286 to 2,438 m). <br />Slopes range from 0 to 5 percent. The average annual precipitation is <br />about 7 inches (0.18 m). The mean soi 1 temperature is about 45 degrees <br />(1.20 C) and the frost free season is approxImately 95 days. This <br />map unit covers about 368,000 acres (148,930 ha) - 575 square miles <br />(1,489 km21. <br /> <br />f'. ~ .. ,- . · <br />\,; t.: ,'.~' 1. .i <br /> <br />A-5 <br />