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, . po .~. '" "'" rt3218G .!~YI~!_!J}~_ -e, i!'" _C_;l!~l~h.()y SJ!..t._d_~~. ~(~}.aY_tY~ .^_~;.~>_(),C i (.)_11.,_ _^_~;_S,()_{'J:I.t)Y!l. .I'})." _(63,801 acres) This association consists of gently sloping to moderately steep soils on uplands and benches (3-25 percent slopes). Elevations range from about 6,500-7,000 feet. Average annual precipitation Is 12-15 inches and moisture regime is aridie. Average annual soil temperature at 20 inches is 47~F, frigid; and frost-free season is 95-110 days. The association has about 90 percent Borollic Vertic Camborthids and about 10 percent unidentified minor soils, northeast of Hayden, and north of Steamboat Springs in Routt County. Borollic Vertic Camborthids are deep and moderately-deep, well- drained soils on sedimentary rocks, Typically they have dark-colored, clayey surface layers, Al horizons, less than 7 inches thick, that crack when dry. The subsoil, 10-40 inch layer, B2 horizons, is a clayey material. The substratum is fractured bedrock. Permeability is slow; effective rooting depth is 20-60 inches. Available water capacity is moderate to high; surface runoff is rapid and erosion hazard is high. Sediment yield from the association is 0.2-1.0 acre-feet/square mile/year. These soils are used for range, dry cropland, and wildlife, General vegetative type is sagebrush. Reclamation potential is fair due to semi-droughtiness. Lithic Camborthids, loamy-Lithic Ustic Torriorthents, loamy Association, Association #24 (74,661 acres) The association consists of steep soils on hills, breaks, and canyon walls (25 perccnt+ slopes). Elevation ranges from about 5,000-7,00Q feet. Average annual precipitation is 8-10 inches and the moisture regime is ,,- 6 .~-~_.- , "