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<br />-~ <br /> <br />Elevations range from about 8,000 to 11,000 feet (2,438 to 3,353 m). <br />Slopes range from 2 to 50 percent. The average annual precipitation <br />ranges from about 10 to 20 inches (0.25 to 0.51 mi. The mean soil <br />temperature is about 40 to 45 degrees F. (4.4 to 7.20 C) and the frost <br />free season is approximately 30 to 75 days. This map unit covers about <br />150,000 acres (60,705 ha) -234 square miles (606 km2). <br /> <br />This map unit is used mainly as rangeland but is also used by wildl ife <br />and for recreation. Native vegetation is dominated by Pinyon pine and <br />Juniper with an understory of wheat and needle grasses, indian rice- <br />grass, squirrel tail and muttongrass. <br /> <br />Droughtiness, stones, and slope are limiting to agricultural uses. The <br />slope and depth to bedrock are limiting to most non-agricultural uses; <br />however, selected areas have good potential for cabin and homesltes. <br /> <br />Map Unit 55 - Typic Cryoborolls, loamy--Rock Outcrop; sloping to steep. <br /> <br />This map unit constitutes 2.4 percent of the basin. The soils in this <br />unit occupy subalpine mountain slopes, mesas, upland benches, and old <br />high terraces and fans. The soils are formed in a wide variety of <br />materials consisting of glacial till and outwash, weathered sandstone, <br />shale disintegrated granite, and stony and cobbly coarse textured <br />alluvium. Rocky outcrop makes up about 20 percent of this unit. <br /> <br />Elevation ranges from about 8,000 to 10,500 feet (2,438 to 3,200 mi. <br />Slopes range from about 2 to 50 percent. The average annual precip- <br />itation ranges from about 15 to 20 inches (0.38 to 0.51 mi. The mean <br />soil temperature is about 38 to 42 degrees F. (3.3 to 5.60 C) and the <br />frost free season is approximately 25 to 65 days. This map unit covers <br />118,000 acres (47,755 ha) - 184 square miles (477 km2). This unit is <br />used almost entirely as rangeland; however, many areas adjacent to <br />streams are irrigated to produce hay or pasture. Elk and deer frequent <br />most of the areas, particularly during winter months for food. Native <br />vegetation is a sparse cover of muttongrass, western wheatgrass, pine <br />needlegrass and in some areas big sagebrush. Where irrigated, sedges, <br />tufted halrgrass, timothy, red top and rushes are dominant. <br /> <br />The dry cold climate and broken slopes are limiting to agricultural <br />uses. Slopes, rock outcrops, and shallow soils limit the potential for <br />non-agricultural uses other than for wildlife. <br /> <br />Map Unit 56 - Typic Cryoborolls, clayey--Typic Cryoboralfs, skeletal, <br />moderately steep and steep. <br /> <br />This map unit constitutes 5.8 percent of the basin. The soils in this <br />unit dominantly occupy mountain slopes. The soils are formed In mate- <br />rials largely weathered in place from shale and sandstone at the lower <br />elevations and from igneous and metamorphic rocks at the higher elevations. <br /> <br />r ~ .... :J) <br />'..: '. <br /> <br />A-14 <br />