Slope gradients range from 0 to 18 percent. Moderately well drained Sunfield, somewhat poorly drained Matherton, and very poorly drained Sebewa soils are the most common associates. Also associated are the Volinia and Dowagiac soils which are Mollisols. The coarser textured Oshtemo and Boyer are associated in some areas. Runoff is slow on the level areas and rapid on the steeper slopes.
Permeability is moderate in the upper loamy materials and rapid in the lower sandy materials.
A large part is cropped to corn, wheat, soybeans, and hay. A small part is in pasture. Some areas adjacent to the larger cities are idle cropland. The native vegetation was northern red oak and hickory forests. The series is of large extent.