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Permeability is moderate, and available water capacity is low. Effective rooting depth is 20 to 40 inches. Surface runoff is medium, and erosion hazard is moderate. This soil is used mainly for wildlife habitat and limited grazing. The native vegetation on this soil, because it faces north and east, is mainly Gambel oak, serviceberry, snowberry, and elk sedge. Elk, mule deer, coyote, and grouse find habitat on this soil. Mao Unit 53 Parachute-Rhone loams, 5 to 30 percent slopes These gently sloping to steep soils are on ridge crests and mountain sides. Elevation ranges from 7,600 to 8,600 feet. The Parachute soil formed in residuum from sandstone or marlstone, and the Rhone soil formed in residuum from hard, fine grained sandstone. The average annual precipitation is about 20 inches, the average annual air temperature is 40 degrees F, and the frost-free period is less than 75 days. The Parachute soil makes up about 55 percent of the map unit, the Rhone soil makes up about 30 percent, and soils of minor extent make up 15 percent. The Parachute soil is mostly on ridge crests, and the Rhone soil is in gently sloping to moderately sloping areas on mountainsides. The Parachute soil is moderately deep and well drained. Typically, the surface layer is grayish brown loam about 5 inches thick. The upper part of the subsoil is very dark grayish brown and brown loam about 13 inches thick, and the lower part is light yellowish brown extremely channery loam about 11 inches thick. Hard, fractured sandstone is at a depth of 29 inches. Permeability of the Parachute soil is moderate, and available water capacity is low. Effective rooting depth is 20 to 40 inches. Surface runoff is medium, and the erosion hazard is moderate. The Rhone soil is deep and well drained. Typically, the upper part of the surface layer is brown loam about 8 inches thick, and the lower part is brown sandy clay loam about 20 inches this. The underlying material is brown very channery sandy clay loam about 24 inches thick. Fractured sandstone is at a depth of 52 inches. Permeability of the Rhone soil is moderate, and available water capacity is moderate to high. Effective rooting depth is 40 to 60 inches. Surface runoff is slow, and the erosion hazard is slight. Included with these soils in mapping are areas of Irigul soils on ridge crests. These areas make up about 10 percent of the map unit. These soils are used mainly for grazing and wildlife habitat. The native vegetation on these soils is mainly needle grass, elk-sedge, and sagebrush.