Aptakisic soils have lighter colored surface layers and Mundelein soils have a mollic epipedon. The moderately well drained Gray soils are on higher positions on the landform. The poorly drained Pella soils are in lower lying drainageways. Somewhat poorly drained. The potential for surface runoff is medium.
Permeability is moderate.
Most areas are used to grow corn, soybeans, and small grain. Native vegetation was probably mixed hardwood trees and prairie grass. Lake County, Illinois, 1960. This revision contains a new pedon.