Elevation ranges from 700 to 1100 feet. These are the Richwood and Rowley soils. The well drained Richwood soils and the somewhat poorly drained Rowley soils form a drainage sequence with the Toddville soils. Moderately well drained. Runoff slow or medium.
Permeability is moderate in the silty and loamy alluvium and rapid in the sandy alluvium.
These soils have a perched seasonal high water table at a depth of 3.5 to 6 feet for 1 month or more per year at some time during the period October to May in 6 or more out of 10 years. Most areas of these soils are cultivated. Principal crops are corn, soybeans, small grain, and hay. Native vegetation is prairie grasses with scattered oak or hickory trees. This series is of moderate extent.