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Permeability of the Rhone soil is moderate. Available water holding capacity is high. Effective <br />rooting depth is 40 to 60 inches. Runoff is medium, and the hazard of water erosion is slight to <br />,very high. <br />The Northwater soil is deep and well drained. It formed in residuum derived dominantly from <br />sandstone. Typically, the upper part of the surface layer is grayish brown loam about 4 inches <br />thick. The lower part is grayish brown loam, about 16 inches thick. The upper 5 inches of the <br />subsoil is brown loam, and the lower 16 inches is pale brown very channery loam 6 inches thick. <br />Fractured sandstone is at a depth of 47 inches. Depth to sandstone ranges from 40 to 60 inches. <br />Permeability of the Northwater soil is moderate. Available water holding capacity is moderate. <br />Effective rooting depth is 40 to 60 inches. Runoff is medium, and the hazard of water erosion is <br />slight to very high. <br />The Lamphier soil is very deep and well drained. It formed in mixed colluvium and residuum <br />derived from sandstone. Typically, the surface is covered with a mat of partially decomposed <br />leaves and twigs 2 inches thick. Typically, the upper part of the surface layer is brown loam <br />about 4 inches thick. The upper part is brown loam about 22 inc es thick. The upper 16 inches <br />of the underlying material is reddish brown loam, and the lower part to a depth of 60 inches or <br />more is reddish brown loam. In some areas the surface layer is fin sandy loam. <br />Permeability of the Lamphier soil is moderate. Available w,~ater holding capacity is high. <br />Effective rooting depth is 60 inches or more. Runoff is medium, sand the hazard of water erosion <br />is moderate to high. <br />This unit is used mainly for livestock grazing and wildlife habitat. It is also used for firewood <br />production. <br />84 -Silas Variant loam, 1-3% Slopes <br />This deep, well drained soil is on alluvial valley floors, on fans, and in swales on terraces. It <br />formed in mixed alluvium. Slope is 1 to 3 percent. Areas are long and narrow or irregular in <br />shape and are 20 to 150 acres in size. The native vegetation is mainly grasses and low shrubs. <br />Elevation is 7,000 to 7,500 feet. The average annual precipitation is 16 to 20 inches, the average <br />annual air temperature is 42 to 45 degrees F., and the average frost-free period is 80 to 105 days. <br />Typically, the upper part of the surface layer is grayish brown loam about 6 inches thick. The <br />lower part is grayish brown loam about 14 inches thick. The underlying material to a depth of 60 <br />inches or more is stratified, grayish brown and dark gray loam, silty clay loam, and clay loam. <br />Included in this unit are small areas of Hagga and Shawa looms. Also included are small areas of <br />soils that are similar to this Silas Variant soil but have a sandy loam or clay loam surface layer. <br />Included areas make up about ] 5 percent of the total acreage. <br />Permeability of the Silas Variant soils is moderate. Available water holding capacity is high. <br />Effective rooting depth is 60 inches or more. Runoff is medium, and the hazard of water erosion <br />is slight. A seasonal high water table is at a depth of 42 to 60 inches in spring and early in <br />summer. This soil is subject to rare periods of flooding. <br />• This unit is used for hay and pasture, livestock grazing, and wildlife habitat. <br />