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CaD-Razor silty clay, 4 to 12 <br />percent slopes <br />Map Unit Setting <br />Major Land Resource Area: 69 <br />Elevation: 4,500 to 5,800 feet (1,372 to 1,768 <br />meters) <br />Mean annual precipitation: 12 to 14 inches (305 <br />to 356 millimeters) <br />Mean annual air temperature: 50 to 53 degrees <br />F. (10.0 to 11.7 degrees C.) <br />Frost-free period: 125 to 155 days <br />Note: Located in the north central part of the <br />county near Thatcher and Delhi. <br />Map Unit Composition <br />Razor and similar soils: 85 percent <br />Minor components: 15 percent <br />Component Descriptions <br />Razor soils <br />Landscape: Plains <br />Landform: Hills, pediments <br />Position on landform: Footslopes <br />Parent material: Clayey alluvium over residuum <br />weathered from shale <br />Slope: 4 to 12 percent <br />Surface fragments: Unspecified <br />Depth to restrictive feature: 20 to 40 inches to <br />bedrock (paralithic) <br />Drainage class: Well drained <br />Slowest permeability:.06 to 0.2 in/hr (slow) <br />Available water capacity: About 4.5 inches (low) <br />Shrink-swell potential: About 7.5 percent (high) <br />Flooding hazard: None <br />Ponding hazard: None <br />Seasonal high water table depth: Unspecified <br />Runoff class: High <br />Calcium carbonate maximum: About 10 percent <br />Gypsum maximum: About 5 percent <br />Salinity maximum: About 10 mmhos/cm <br />(moderately saline) <br />Sodium adsorption ratio maximum: About 14 <br />(moderately sodic) <br />Relative effective annual precipitation: <br />Unspecified <br />Ecological site: Clayey <br />Potential native vegetation: western wheatgrass, <br />blue grama, fourwing salthush, galleta, green <br />needlegrass, alkali sacaton, winterfat, <br />american vetch <br />Land capability subclass (irrigated): Unspecified <br />Land capability subclass (nonirrigated): 6e <br />Typical Profile: <br />A--0 to 2 inches; silty clay <br />Bw-2 to 10 inches; clay <br />Bkss-10 to 28 inches; clay <br />Cr-28 to 40 inches; weathered bedrock <br />Minor Components <br />Midway and similar soils <br />Composition: About 10 percent <br />Landscape: Plains <br />Landform: Hills, pediments <br />Position on landform: Backslopes, summits <br />Slope: 4 to 12 percent <br />Depth to restrictive feature: 6 to 20 inches to <br />bedrock (paralithic) <br />Drainage class: Well drained <br />Flooding hazard: None <br />Ecological site: Shaly Plains <br />Distinguishing characteristics: These soils <br />are shallow to shale. <br />Manzanola and similar soils <br />Composition: About 5 percent <br />Landscape: Plains <br />Landform.' Plains, fans <br />Position on landform: Toeslopes, footslopes <br />Slope: 3 to 6 percent <br />Depth to restrictive feature: Unspecified <br />Drainage class: Well drained <br />Flooding hazard: None <br />Ecological site: Clayey <br />Distinguishing characteristics: These soils <br />are very deep. <br />Major Uses <br />Rangeland, wildlife habitat <br />