Moderately well drained and moderate permeability. The potential for surface water runoff is medium. Depth to an intermittent apparent high water table is 2.0 to 3.5 feet from January to April in most years. Most areas are cropped to corn, soybeans, and wheat. A few areas are pastured or wooded.
Native vegetation is mixed prairie grasses and deciduous trees.
Extent is moderate, and mainly in MLRA 115. St. Clair County, Illinois, 1997. The Downsouth series was named for the southern extent of the Downs series. Udic moisture regime.