Thornthwaite P-E indices range from 50 to 66. These are the Bleiblerville , Brenham , Carbengle , and Frelsburg soils. Bleiblerville soils have chroma less than 2 within 12 inches of the surface, and are on adjacent lower slopes. Brenham and Carbengle soils contain less clay and are on nearby slopes. Frelsburg soils are on lower, smoother areas in the landscape.
Permeability is very slow.
Runoff is medium on 1 to 3 percent slopes, high on 3 to 5 percent slopes, and very high on slopes greater than 5 percent. Water enters this soil very rapidly when cracks are open, and very slowly when cracks have closed. Most areas have been cultivated in the past. Native vegetation is mid and tall prairie grasses with a few scattered trees. The series is of moderate extent.