The mean annual temperature ranges from about 53 to 57 degrees F, and mean annual precipitation ranges from about 40 to 45 inches. The Bartle , Conotton , Elkinsville , Pekin , Peoga , and Selma soils are associated on the low terraces. All of these soils except Selma have argillic horizons. Selma soils have mollic epipedons. Ross , Haymond , Genesee , and Cuba soila are on nearby flood plains.
Surface runoff is very slow.
Permeability is slow. Chiefly cropped to corn, soybeans, wheat and clover. Native vegetation was forest. The series is of moderate extent. Knox County, Indiana, 1934.