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Map Unit Description: Fortwingate-Rock outcrop complex, 15 to 60 percent slopes—El Paso <br />County Area, Colorado <br />El Paso County Area, Colorado <br />32—Fortwingate-Rock outcrop complex, 15 to 60 percent <br />slopes <br />Map Unit Setting <br />National map unit symbol: 3685 <br />Elevation: 6,600 to 7,200 feet <br />Mean annual precipitation: 16 to 18 inches <br />Mean annual air temperature: 42 to 46 degrees F <br />Frost -free period: 100 to 120 days <br />Farmland classification: Not prime farmland <br />Map Unit Composition <br />Fortwingate and similar soils: 40 percent <br />Rock outcrop: 30 percent <br />Estimates are based on observations, descriptions, and transects of the <br />mapunit. <br />Description of Fortwingate <br />Setting <br />Landform: Mountains <br />Landform position (three-dimensional): Mountainflank <br />Down-slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Residuum weathered from sandstone and shale <br />Typical profile <br />A - 0 to 6 inches: loam <br />Bt - 6 to 23 inches: clay <br />Cr - 23 to 38 inches: weathered bedrock <br />R - 38 to 42 inches: unweathered bedrock <br />Properties and qualities <br />Slope: 15 to 40 percent <br />Depth to restrictive feature: 20 to 40 inches to lithic bedrock <br />Natural drainage class: Well drained <br />Runoff class: High <br />Capacity of the most limiting layer to transmit water (Ksat): Very low <br />to moderately high (0.00 to 0.20 in/hr) <br />Depth to water table: More than 80 inches <br />Frequency of flooding: None <br />Frequency of ponding: None <br />Available water storage in profile: Low (about 3.5 inches) <br />Interpretive groups <br />Land capability classification (irrigated): None specified <br />Land capability classification (nonirrigated): 7e <br />Hydrologic Soil Group: C <br />Ecological site: Shallow Foothill (R049BY204C0) <br />USDA Natural Resources Web Soil Survey 10/21/2015 <br />Conservation Service National Cooperative Soil Survey Page 1 of 2 <br />