Surface runoff is medium to rapid. Permeability is moderate. The seasonal high water table is more than six feet below the surface in the spring. The steeper slopes are wooded or used for pasture. The less sloping areas are used for corn, soybean, small grain, and forages.
Native vegetation is hardwood forest.
Cass County, Illinois, 1939. Extent of moderately well drained profiles is small. Argillic horizon - the zone from approximately 10 to 23 inches. Udic moisture regime. Particle-size data are on file for several pedons of the Sylvan soils at the NRCS MLRA Region 11.