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Map Unit Description <br />San Miguel Area, Colorado, Parts of Dolores, Montrose, and San Miguel Counties <br />87 Rock outcrop <br />Setting <br />Elevation: 4700 to 10000 feet <br />Mean annual precipitation: 10 to 22 inches <br />Mean annual air temperature: 40 to 49 degrees F <br />Frost-free pedod: 65 to 140 days <br />Composition <br />Rock outcrop: 90 percent <br />Description of Rock outcrop <br />Setting <br />Landform: Canyons, mesas <br />Down-slope shape: Linear <br />Across-slope shape: Linear <br />Parent matedal: Residuum weathered from sandstone <br />Properties and Qualities <br />Slope: 40 to 120 percent <br />Depth to restrictive feature: 0 to 4 inches to LiMlc bedrock <br />Capacity of the most limiting layer to transmit water (KSat): Very low or law (0.00 to 0.00 in/hr) <br />Frequency of flooding: None <br />Frequency of ponding: None <br />Interpretive Groups <br />Land capability (non irdgaletl): 8s <br />Typical Profile <br />0 to 60 inches: unweathered bedrock <br />US~~1 Natural Resources <br />Conservation Service Tabular Data Version: 4 <br />Tabular Data Version Date: 0111 012 0 0 7 <br />Page 1-9 <br />