The somewhat poorly drained Whitaker soils average more than 18 percent clay in the upper 20 inches of the argillic horizon. The somewhat poorly drained Whitaker soils are on lower lying swells of outwash plains and treads of stream terraces nearby. The potential for surface runoff is low or medium. Permeability is moderately rapid. Most areas are used to grow corn, soybeans, small grain, and pasture.
Native vegetation is hardwood trees.
This series is within several MLRA's, but dominantly in 114 and 115. Vermilion County, Illinois, 1931. These phases will be evaluated and may be proposed as new series. Soil Survey Investigations Report No. 19.