Fattig, Flaco, Gaddes, Gapbutte, Hagerman, and Progresso soils have lithic contacts between 20 and 40 inches. Bowbac and Pugsley soils have more than 35 percent fine sand or coarser in the particle size control section. Pugsley soils are also noncalcareous throughout. Pokeman soils have redder hue and have a paralithic contact to gypsum or alabaster at 20 to 40 inches. Spangler soils are noncalcareous throughout and lack a Bk horizon.
Cushman soils are on buttes, fan remnants fan piedmonts, hillslopes and ridges.
Slopes range from 0 to 20 percent. The soils formed in moderately fine textured slopewash alluvium and residuum. Surface erosion is common in overgrazed areas, and some thin eolian deposits overlie these soils in some areas. Elevations are 3,500 to 6,000 feet. The mean annual precipitation is 13 inches and ranges from 10 to 14 inches with over half of the annual precipitation falling in April, May, and June and less than one inch falling in each month of July, August, September and October.