Thornthwaite P-E indices range from 44 to 60. These include the Asa , Miller , Weswood and Yahola series. Asa soils have mollic epipedons less than 20 inches thick. Miller soils have a fine textured control section. Weswood and Yahola soils lack mollic epipedons.
Permeability is moderate.
Runoff is negligible on slopes less than 1 percent, and very low on 1 to 3 percent slopes. A few small areas are used for improved pasture. Native vegetation consisted of elm, pecan, hackberry, and tall bunch grasses. Series is of moderate extent. Cambic horizon - 26 to 60 inches.