In undrained conditions, the apparent seasonal high water table is at a depth of 0.5 foot above the surface to 0.5 foot below the surface at some time between November and June in most years. The potential for surface runoff is negligible. Permeability is moderate. Most areas are cultivated. Corn and soybeans are the principal crops.
Native vegetation is probably marsh grasses and sedges.
Cass County, Illinois, 1939.