Trag soils do not have free carbonate, and Wemple soils are high in volcanic ash. In addition, Dooley and Livona contain less clay in the lower part of the soil. Felor soils are on terraces and nearly level to rolling tablelands. Slope gradients typically are 2 to 6 percent but range from 0 to 15 percent. The soils formed in loamy sediment overlying clayey sediments of mixed origin.
Climate is cool and semi-arid.
Mean annual temperature is 39 to 45 degrees F, and mean annual precipitation is 14 to 18 inches. Most precipitation comes in the spring and summer. These are the competing Farnuf , Lefor , Reeder , and Yegen soils and Arnegard , Belfield , Daglum , Morton , and Ridgeview soils. Farnuf, Lefor, Morton, Reeder, and Yegen are on similar landscapes. Arnegard soils are in swales, do not have argillic horizons, and have mollic epipedons greater than 16 inches thick.