The Fayette, and Menfro soils are on nearby landforms typically upslope, and have free carbonates at depths greater than 40 inches. The somewhat excessively drained Hamburg soils average less than 18 percent clay in the particle-size control section and are on side slopes on bluffs above Sylvan soils. The Hickory soils average more than 15 percent sand in the particle-size control section, formed in till, and are downslope from the Sylvan soils. The moderately well drained Iona and Rozetta soils are upslope from the Sylvan soils. 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.