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ADVANCED COPY SUBJECT TO CHANGE <br />• <br />• <br />0 <br />967-Dearrock, noncalcareous- <br />Curecanti-Banulis complex, 3 to <br />35 percent slopes <br />Map Unit Setting <br />Major Land Resource Area: 48A <br />Elevation: 6,790 to 9,000 feet (2,070 to 2,744 <br />meters) <br />Mean annual precipitation: 16 to 24 inches (406 <br />to 610 millimeters) <br />Mean annual air temperature: 43 to 45 degrees <br />F. (6.1 to 7.2 degrees C.) <br />Freeze-free period: 80 to 115 days <br />Map Unit Composition <br />Dearrock, noncalcareous and similar soils: 40 <br />percent <br />Curecanti and similar soils: 30 percent <br />Banulis and similar soils: 15 percent <br />Minor components: <br />Component Descriptions <br />Dearrock, noncalcareous soils <br />Landscape: Unspecified <br />Landform: Mountain slopes <br />Position on landform: Toeslopes, footslopes <br />Parent material: Colluvium derived from <br />igneous, metamorphic and sedimentary rock <br />and/or silty and clayey slope alluvium <br />derived from shale <br />Slope: 3 to 35 percent <br />Surface fragments: About 2 percent subangular <br />stones, about 2 percent subangular cobbles, <br />about 2 percent subangular gravel <br />Depth to restrictive feature: Unspecified <br />Drainage class: Well drained <br />Slowest permeability: .00 1 to .06 in/hr (very <br />slow) <br />Available water capacity: About 8.6 inches <br />(moderate) <br />Shrink-swell potential: About 6.4 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 5 percent <br />Gypsum maximum: None <br />Salinity maximum: About 0 mmhos/cm <br />(nonsaline) <br />Sodium adsorption ratio maximum: About 0 <br />(nonsodic) <br />Relative effective annual precipitation: <br />Unspecified <br />Ecological site: Brushy Loam <br />Potential native vegetation: Gambel oak, Utah <br />serviceberry, elk sedge, mountain <br />mahogany, slender wheatgrass, western <br />wheatgrass, LETTERMAN NEEDLEGRASS, <br />mountain brome, nodding brome, prairie <br />Junegrass, common chokecherry, Woods <br />rose <br />Land capability subclass (irrigated): Unspecified <br />Land capability subclass (nonirrigated): 7e <br />Typical Profile: <br />Oi-0 to 1 inches; slightly decomposed plant <br />material <br />A-1 to 13 inches; gravelly loam <br />BAt-13 to 17 inches; clay loam <br />Btl-17 to 22 inches; sandy clay loam <br />Bt2-22 to 33 inches; clay <br />Btss-33 to 39 inches; clay <br />BCt-39 to 47 inches; clay <br />C1--47 to 57 inches; clay <br />C2-57 to 60 inches; paragravelly clay loam <br />Curecanti soils <br />Landscape: Unspecified <br />Landform: Mountain slopes <br />Position on landform: Backslopes <br />Parent material: Colluvium derived from <br />igneous, metamorphic and sedimentary rock <br />and/or silty and clayey slope alluvium <br />derived from shale <br />Slope: 3 to 35 percent <br />Surface fragments: About 5 percent subangular <br />gravel, about 10 percent subangular <br />cobbles, about 5 percent subangular stones <br />Depth to restrictive feature: Unspecified <br />Drainage class: Well drained <br />Slowest permeability: 0.2 to 0.6 in/hr <br />(moderately slow) <br />Available water capacity. About 6.4 inches <br />(moderate) <br />Shrink-swell potential: About 2.4 percent (low) <br />Flooding hazard. None <br />Ponding hazard. None <br />Seasonal high water table depth: Unspecified <br />Runoff class: Very high <br />Calcium carbonate maximum: None <br />Gypsum maximum: None <br />Salinity maximum: About 0 mmhos/cm <br />(nonsaline) <br />Sodium adsorption ratio maximum: About 0 <br />(nonsodic) <br />Relative effective annual precipitation: <br />Unspecified <br />Ecological site: Brushy Loam <br />Potential native vegetation: Gambel oak, Utah <br />serviceberry, elk sedge, mountain <br />mahogany, slender wheatgrass, western <br />wheatgrass, LETTERMAN NEEDLEGRASS, <br />mountain brome, nodding brome, prairie <br />Junegrass, common chokecherry, Woods <br />rose <br />Land capability subclass (irrigated): Unspecified