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• 35 percent fine sand or coarser in the Bt horizon. Fattig, Flaco, Gaddes, Gapbutte, <br />Hagerman, Progresso, and Threetop soils have a lithic contact at 20 to 40 inches. <br />Pokeman soils have alabaster at 20 to 40 inches and hues redder than 7.5YR <br />throughout. Pugsley and Spangler soils are noncalcareous throughout. <br />GEOGRAPHIC SETTING: Bowbac soils are on dissected fan remnants, fan piedmonts, <br />hillslopes, pediments, ridges and buttes. Slopes are 0 to 15 percent. Elevations are <br />3,500 to 6,500 feet. The average annual precipitation is 13 inches with over half of the <br />annual precipitation falling in April, May, and June and less than one inch falling in each <br />month of July, August, September, and October. Precipitation ranges from 10 to 14 <br />inches. The mean annual temperature ranges from 43 to 51 degrees F. The frost-free <br />season is about 110 to 130 days. <br />GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Cushman, <br />Hiland, and Cambria soils and the Parmleed soils. Parmleed soils have over 35 percent <br />clay in the Bt horizon. <br />DRAINAGE AND PERMEABILITY: Well drained; runoff is medium or low; moderate <br />permeability. <br />USE AND VEGETATION: These soils are used primarily for grazing. Native vegetation <br />is needleandthread grass, blue grama, western wheatgrass, and big sagebrush. <br />• DISTRIBUTION AND EXTENT: Central and northern Wyoming. The soil is extensive. <br />MLRA OFFICE RESPONSIBLE: Bozeman, Montana <br />SERIES ESTABLISHED: Carbon County, Montana; 1971. <br />REMARKS: Diagnostic horizons and features recognized in this pedon are: <br />Ochric epipedon - 0 to 3 inches (A) <br />Argillic horizon - 3 to 31 inches (Bt1,Bt2) <br />Paralithic contact - 39 inches (Cr) <br />SIR - WY1133 <br />. (REVISED 9/99) 2.04.9-38 <br />