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Weathered shale is at a depth of 24 inches. Depth to shale and interbedded sandstone ranges from <br />20 to 40 inches. <br />Permeability of the Owen Creek soil is slow. Available water holding capacity is slow. Effective <br />rooting depth is 20 to 40 inches. Runoff is rapid, and the hazard of water erosion is moderate to <br />high. <br />The Jerry soil is deep and well drained. It formed in residuum derived dominantly from shale. <br />Typically, the surface layer is dark grayish brown loam 2 inches thick. The lower part is brown <br />loam, about 3 inches thick. The next layer is brown loam 8 inches thick. The upper 21 inches of <br />the subsoil is yellowish brown channery clay loam, and the lower 14 inches is light olive brown <br />channery clay loam. The substratum to a depth of 60 inches or more is light yellowish brown <br />channery clay loam. <br />Permeability of the Jerry soil is moderate. Available water holding capacity is high. Effective <br />rooting depth is 20 to 40 inches. Runoff is medium, and the hazard of water erosion is moderate <br />to high. <br />The Bumette soil is deep and well drained. It formed in colluvium and residuum derived <br />dominantly from shale. Typically, the upper part of the surface layer is grayish brown loam about <br />5 inches thick. The lower part is grayish brown clay loam, about 5 inches thick. The upper 20 <br />inches of the subsoil is brown clay, and the lower 8 inches is yellowish brown clay. The next <br />layer is light brownish gray clay 8 inches thick. The substratum to a depth of 60 inches or more <br />is light brownish gray clay. Highly calcareous, soft shale that has thin lenses of sandstone is at a <br />• depth of 5 to 8 feet. <br />Permeability of the Bumette soil is slow. Available water holding capacity is moderate to high. <br />Effective rooting depth is 60 inches or more. Runoff is medium, and the hazard of water erosion <br />is moderate to high. <br />Most areas of this unit are used for livestock grazing and wildlife habitat. <br />77 -Rhone-Northwater-Lamphier loams, 3-50% slopes <br />This map unit is on mountain sides and valley sides. Areas are irregular in shape and are 40 to <br />500 acres in size. The native vegetation is mainly aspen, brush, and grasses. Elevation is 7,400 to <br />8,600 feet. The average annual precipitation is 18 to 22 inches, the average annual air <br />temperature is 37 to 39 degrees F., and the average frost-free period is 45 to 75 days. <br />This unit is 40 percent Rhone loam that has slopes of 3 to 50 percent, 30 percent Northwater loam <br />that has slopes of 3 to 50 percent, and 20 percent Lamphier loam that has slopes of 8 to 35 <br />percent. Included in this unit are small areas of Bumette, Cochetopa, Jerry, and Silas loams. <br />The Rhone soil is deep and well drained. It formed in residuum derived dominantly from <br />sandstone. Typically, the upper part of the surface layer is dark grayish brown loam about 8 <br />inches thick. The lower part is dark grayish brown loam, about 16 inches thick. The next layer is <br />grayish brown loam about 16 inches thick. The next layer is grayish brown very channery loam <br />16 inches thick. The underlying material is brown very channery loam 10 inches thick. Fractured <br />• sandstone is at a depth of 50 inches. Depth to sandstone or shale ranges from 40 to 60 inches. <br />