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Custom Soil Resource Report <br /> Ridgway Area, Colorado, Parts of Delta, Gunnison, Montrose, and <br /> Ouray Counties <br /> 701—Montrose silty clay loam, 0 to 2 percent slopes <br /> Map Unit Setting <br /> National map unit symbol. k2f9 <br /> Elevation: 4,500 to 5,800 feet <br /> Mean annual precipitation: 6 to 9 inches <br /> Mean annual air temperature: 50 to 55 degrees F <br /> Frost-free period. 140 to 180 days <br /> Farmland classification: Prime farmland if irrigated <br /> Map Unit Composition <br /> Montrose and similar soils: 80 percent <br /> Minor components:20 percent <br /> Estimates are based on observations, descriptions, and transects of the mapunit. <br /> Description of Montrose <br /> Setting <br /> Landform: Stream terraces <br /> Landform position(three-dimensional):Tread <br /> Down-slope shape: Linear <br /> Across-slope shape: Linear <br /> Parent material:Alluvium derived from shale <br /> Typical profile <br /> Ap-0 to 4 inches: silty clay loam <br /> Bt-4 to 13 inches: silty clay <br /> Btz- 13 to 36 inches: silty clay <br /> C-36 to 65 inches: silty clay loam <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 (0.07 to 0.21 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:Very slightly saline to moderately saline(2.0 to 8.0 mmhos/cm) <br /> Sodium adsorption ratio, maximum:8.0 <br /> Available water supply, 0 to 60 inches: High (about 9.6 inches) <br /> Interpretive groups <br /> Land capability classification(irrigated): 4e <br /> Land capability classification(nonirrigated): 6e <br /> Hydrologic Soil Group: C <br /> Ecological site: R034BY104UT-Desert Clay(Shadscale) <br /> Hydric soil rating: No <br /> 14 <br />