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ADVANCED COPY SUBJECT TO CHANGE <br />• <br /> <br />r? <br />857-Johmurray cobbly loam, 3 to <br />15 percent slopes <br />Map Unit Setting <br />Major Land Resource Area: 48A <br />Elevation: 6,590 to 8,100 feet (2,010 to 2,470 <br />meters) <br />Mean annual precipitation: 14 to 20 inches (355 <br />to 508 millimeters) <br />Mean annual air temperature: 45 to 47 degrees <br />F. (7.2 to 8.3 degrees C.) <br />Freeze-free period: 110 to 130 days <br />Map Unit Composition <br />Johmurray and similar soils: 75 percent <br />Minor components: 25 percent <br />Component Descriptions <br />Johmurray soils <br />Landscape: Unspecified <br />Landform: Erosional remnant hills, moraines, <br />outwash fans, outwash terraces, kames <br />Position on landform: Backslopes on hills <br />Parent material. Glaciofluvial deposits derived <br />from mixed sources <br />Slope: 3 to 15 percent <br />Surface fragments: About 2 percent rounded <br />stones, about 15 percent rounded gravel, <br />about 10 percent rounded cobbles <br />Depth to restrictive feature: Greater than 60 <br />inches <br />Drainage class: Well drained <br />Slowest permeability: 0.2 to 0.6 in/hr <br />(moderately slow) <br />Available water capacity. About 4.5 inches (low) <br />Shrink-swell potential: About 1.0 percent (low) <br />Flooding hazard. None <br />Ponding hazard: None <br />Seasonal high water table depth: Greater than <br />60 inches <br />Runoff class: Medium <br />Calcium carbonate maximum: About 40 percent <br />Gypsum maximum: None <br />Salinity maximum: About 1 mmhos/cm <br />(nonsaline) <br />Sodium adsorption ratio maximum: About 0 <br />(nonsodic) <br />Relative effective annual precipitation: 14 to 16 <br />inches (355 to 406 millimeters) <br />Ecological site: Loamy Foothills <br />Potential native vegetation: muttongrass, <br />western wheatgrass, Wyoming big <br />sagebrush, black sagebrush, Indian <br />ricegrass, bottlebrush squirreltail, <br />needleandthread, prairie Junegrass, Utah <br />serviceberry, antelope bitterbrush, <br />DOUGLAS RABBITBRUSH, true mountain <br />mahogany <br />Land.capability subclass (irrigated): Unspecified <br />Land capability subclass (nonirrigated): 6e <br />Typical Profile: <br />A1-0 to 4 inches; cobbly loam <br />A2-4 to 15 inches; very cobbly loam <br />Btk-15 to 40 inches; very cobbly sandy clay <br />loam <br />Bk-40 to 61 inches; extremely cobbly sandy <br />clay loam <br />Minor Components <br />Headwill and similar soils <br />Composition: About 5 percent <br />Landscape: Unspecified <br />Landform: Outwash terraces, alluvial fans <br />Position on landform: Backslopes, toeslopes, <br />summits <br />Slope: 3 to 25 percent <br />Depth to restrictive feature: Unspecified <br />Drainage class: Well drained <br />Flooding hazard: None <br />Ecological site: Unspecified <br />Distinguishing characteristics: Unspecified <br />Parkeli and similar soils <br />Composition: About 5 percent <br />Landscape: Unspecified <br />Landform: Outwash terraces, alluvial fans <br />Position on landform: Backslopes <br />Slope: 3 to 15 percent <br />Depth to restrictive feature: Unspecified <br />Drainage class: Well drained <br />Flooding hazard. None <br />Ecological site: Loamy Foothills <br />Distinguishing characteristics: Unspecified <br />Cowcreek and similar soils <br />Composition: About 5 percent <br />Landscape: Unspecified <br />Landform: Alluvial fans, hills <br />Position on landform: Toeslopes <br />Slope: 3 to 25 percent <br />Depth to restrictive feature: Unspecified <br />Drainage class: Well drained <br />Flooding hazard. None <br />Ecological site: Clayey Foothills <br />Distinguishing characteristics: Unspecified <br />Yonder and similar soils <br />Composition: About 5 percent <br />Landscape: Unspecified <br />Landform: Hillslopes <br />Position on Landform: Unspecified <br />Slope: 3 to 20 percent <br />Depth to restrictive feature: Unspecified <br />Drainage class: Well drained <br />Flooding hazard: None <br />Ecological site: Unspecified <br />Distinguishing characteristics: Unspecified <br />Selfwill and similar soils