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• Land capability classification (nonirrigated): 7s <br /> • Hydrologic Soil Group:A <br /> • Ecological site: R048AY281CO- Mountain Outwash <br /> • Hydric soil rating: No <br /> Minor Components <br /> Alvarado <br /> • Percent of map unit: 10 percent <br /> • Hydric soil rating: No <br /> Libeg <br /> • Percent of map unit: 10 percent <br /> • Hydric soil rating: No <br /> 31—Rogert-Woodhall extremely cobbly sandy loams,20 to 45 percent <br /> Map Unit Setting <br /> • National map unit symbol:jgm9 <br /> • Elevation:8,000 to 10,000 feet <br /> • Mean annual precipitation: 18 to 23 inches <br /> • Mean annual air temperature: 38 to 42 degrees F <br /> • Frost free period:40 to 60 days <br /> • Farmland classification: Not prime farmland <br /> Map Unit Composition <br /> • Rogert and similar soils: 50 percent <br /> • Woodhall and similar soils: 35 percent <br /> • Minor components: 15 percent <br /> • Estimates are based on observations, descriptions, and transects of the map unit. <br /> Description of Rogert <br /> Setting <br /> • Landform: Mountains <br /> • Landform position (three-dimensional): Mountainflank <br /> • Down-slope shape: Convex <br /> • Across-slope shape:Convex <br /> • Parent material: Residuum weathered from igneous rock <br /> Typical profile <br /> • H1 -0 to 10 inches:extremely cobbly sandy loam <br /> • H2-10 to 15 inches: extremely gravelly sandy loam, very gravelly sandy loam <br /> • H2-10 to 15 inches: unweathered bedrock <br /> • H3-15 to 19 inches: <br /> Properties and qualities <br /> • Slope: 25 to 45 percent <br /> • Depth to restrictive feature: 10 to 20 inches to lithic bedrock <br /> • Drainage class:Well drained <br /> • Runoff class:Very high <br />