The somewhat poorly drained Elburn soils have mollic epipedons and are on similar parts of the landscape nearby but generally are on broad landscape areas farther from the drainageways. The somewhat poorly drained Kendall soils lack a dark colored surface layer and are on similar parts of the landscape nearby but generally are adjacent to or nearer the drainageways. Millbrook soils are on similar parts of the stream terraces and outwash plains where the loess is thinner. The poorly drained Drummer and Thorp soils are on lower parts of the landscape. Drummer soils have a mollic epipedon but lack an argillic horizon.
Thorp soils have both a mollic epipedon and an albic horizon.
Somewhat poorly drained. The potential for surface runoff is slow to medium. Permeability is moderate in the upper part of the solum and ranges to moderately rapid in the lower part. Corn, soybeans, small grain, and forages for hay are the principal crops. Native vegetation is mixed grasses and trees.