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Rio Grande County Area, Colorado <br />De- Derrick cobbly loam <br />Map Unit Setting <br />Elevation: 7,600 to 8,200 feet <br />Frost -free period: 90 to 105 days <br />Map Unit Composition <br />Derrick and similar soils: 100 percent <br />Description of Derrick <br />Setting <br />Landform: Terraces, alluvial fans <br />Down -slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Cobbly alluvium <br />Properties and qualities <br />Slope: 0 to 3 percent <br />Depth to restrictive feature: More than 80 inches <br />Drainage class: Well drained <br />Capacity of the most limiting layer to transmit water <br />(Ksat): Moderately high to high (0.60 to 2.00 in/hr) <br />Depth to water table: More than 80 inches <br />Frequency of flooding: None <br />Frequency of ponding.: None <br />Calcium carbonate, maximum content: 15 percent <br />Maximum salinity: Nonsaline (0.0 to 2.0 mmhoslcm ) <br />Available water capacity: Low (about 4.0 inches) <br />Interpretive groups <br />Land capability (nonirngated): 7s <br />Ecological site: Mountain Outwash (R051 XY281 CO ) <br />Typical profile <br />0 to 4 inches: Cobbly loam <br />4 to 17 inches: Very gravelly loam <br />17 to 60 inches: Very cobbly sand <br />Data Source Information <br />Soil Survey Area: Rio Grande County Area, Colorado <br />Survey Area Data: Version 8. Aug 3. 2010 <br />