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Custom Soil Resource Report <br />Ridgway Area, Colorado, Parts of Delta, Gunnison, Montrose, and Ouray <br />Counties <br />701 — Montrose -Delta complex, 0 to 2 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 />Montrose and similar soils: 60 percent <br />Delta and similar soils: 15 percent <br />Minor components: 25 percent <br />Description of Montrose <br />Setting <br />Landform: Alluvial fans, fan remnants, stream terraces <br />Landform position (three - dimensional): Tread, flat <br />Down -slope shape: Linear <br />Across -slope shape: Linear <br />Parent material: Clayey alluvium derived from calcareous shale <br />Properties and qualities <br />Slope: 0 to 2 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 (Ksat): Moderately low to <br />moderately high (0.06 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 />Calcium carbonate, maximum content: 15 percent <br />Gypsum, maximum content: 4 percent <br />Maximum salinity: Nonsaline to slightly saline (0.0 to 8.0 mmhos/cm) <br />Sodium adsorption ratio, maximum: 8.0 <br />Available water capacity:: High (about 9.9 inches) <br />Interpretive groups <br />Land capability classification (irrigated): 2e <br />Land capability (nonirrigated): 7c <br />Ecological site: Salt Flats (R034XY262C0) <br />Typical profile <br />0 to 4 inches: Silty day loam <br />4 to 13 inches: Silty clay <br />13 to 36 inches: Silty clay <br />36 to 47 inches: Silty clay loam <br />47 to 65 inches: Silty clay loam <br />12 <br />