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Map Unit Description— Ridgway Area, Colorado, Parts of Delta, Gunnison, <br />Montrose, and Ouray Counties <br />USDA Natural Resources <br />Conservation Service <br />Fruitland <br />Percent of map unit: 3 percent <br />Landform: Alluvial fans, stream terraces <br />Landform position (three- dimensional): Tread <br />Down -slope shape: Linear <br />Across -slope shape: Convex <br />Ecological site: Sandy Saltdesert (R035XY402C0) <br />Tuomack <br />Percent of map unit: 3 percent <br />Landform: Outwash terraces <br />Landform position (three - dimensional): Tread <br />Down -slope shape: Linear <br />Across -slope shape: Linear <br />Ecological site: Loamy Saltdesert (R034XY401 CO) <br />Cherylade <br />Percent of map unit: 3 percent <br />Landform: Alluvial fans, fan remnants <br />Ecological site: Loamy Saltdesert (R034XY401C0) <br />Aquisalids <br />Percent of map unit: 2 percent <br />Landform: Drainageways, marshes, sloughs <br />Down -slope shape: Linear <br />Across -slope shape: Concave, linear <br />763 —Mesa gravelly loam, 2 to 5 percent slopes <br />Map Unit Setting <br />Elevation: 4,800 to 6,200 feet <br />Mean annual precipitation: 8 to 10 inches <br />Mean annual air temperature: 49 to 51 degrees F <br />Frost -free period: 140 to 160 days <br />Map Unit Composition <br />Mesa and similar soils: 80 percent <br />Minor components: 20 percent <br />Description of Mesa <br />Setting <br />Landform: Outwash terraces <br />Landform position (three - dimensional): Tread, riser <br />Down -slope shape: Convex <br />Across -slope shape: Convex <br />Parent material: Fine -loamy alluvium derived from sandstone over <br />gravelly glaciofluvial deposits derived from igneous, <br />metamorphic and sedimentary rock; fine -loamy alluvium derived <br />from sandstone over gravelly glaciofluvial deposits derived from <br />igneous, metamorphic and sedimentary rock <br />Properties and qualities <br />Slope: 2 to 5 percent <br />Web Soil Survey <br />National Cooperative Soil Survey <br />10/27/2012 <br />Page 31 of 63 <br />