Laserfiche WebLink
<br />This map unit constitutes 4.5 percent of the basin. These soils occupy <br />flood plains, low terraces and alluvial fans and are formed in mixed <br />alluvium. <br /> <br />The elevation is about 7,500 feet (2,286 m). Slopes are less than 2 <br />percent. The average annual precipitation is about 7 inches (0.18 m). <br />The mean annual 'soil temperature is about 45 degrees F. (].20 C) and the <br />frost free season' is approximately 95 days. This ma~ unit covers about <br />219,000 acres (88,629 ha) - 342 square miles (886 km ). <br /> <br />This map unit is used principally for irrigated hay and pasture, irri- <br />gated cropland, wetland wildlife habitat, and as rangeland. Native <br />vegetation is dominantly tufted hairgrass, alkali sacaton, wheatgrasses <br />and sedge. Where drains are installed, potatoes and barley are common <br />irrigated crops. <br /> <br />Poor urainage, excess salts, and cold climate are major limitations to <br />irrigated crop production, and poor drainage and flooding severely limit <br />the potential for most non-agricultural uses. The potential for wetland <br />wildlife habitat development is good. <br /> <br />Map Unit 49 - Typic Cryaquolls. loamy--Argic Cryaquolls, loamy--Cumul ic <br />Cryaquolls, loamy nearly level and gently sloping. <br /> <br />Th i s map un i t const i tutes 0.7 percent of the bas in'. The so i Is in th is <br />unit occupy high mountain meadow areas on floodplains, low terraces and <br />fans. The soils are formed in mixed alluvium. <br /> <br />Elevation ranges from about 7.800 to 10,000 feet (2,377 to 3,048 m). <br />Slopes range from 0 to 5 percent. The average annual precipitation <br />ranges from 12 to 20 inches (0.31 to 0.51 m). The mean annual soil <br />temperature ranges from 35 to 45 degrees F. (1.67 to 7.20 C) and the <br />frost free season is approximately 30 to 90 days. This map unit covers <br />35,000 acres (14,165 ha) - 54 square miles (140 km2). <br /> <br />This map unit is nearly all used for irrigated hay or pasture. A few of <br />the wettest areas are used for wildlife. Native vegetation is mostly <br />sedge, rush and tufted hairgrass with willows adjacent to streams. The <br />more improved fields have clovers or alfalfa added for hay production. <br /> <br />Poor drainage and short growing season are limiting to irrigated crop <br />production. Wetness and flooding are limiting to non-agricultural uses. <br /> <br />Map Unit 50 - Aridic Argiborolls, skeletal--Lithic Argiborolls, skeletal <br />sloping to steep. <br /> <br />This map unit constitutes 3.1 percent of the basin. The soils in this <br />unit occupy fans, foothills, and mountain side slopes. The soils are <br />dominantly formed in materials weathered from a variety of igneous and <br />metamorphic rocks. <br /> <br />r- ~, . , 9 <br />v'_ ' .. ..... <br /> <br />A-13 <br />