The somewhat poorly drained Avonburg soils are typically on nearly level summits. The well drained Carmel, Eden and Hickory soils are on backslopes. The Carmel and Eden soils formed in residuum weathered from interbedded limestone and shale. The well drained Cincinnati and moderately well drained Nabb soils are typically summits and shoulders, and have less clay in the upper part of the argillic horizon. The potential for surface water runoff is high or very high.
Permeability is moderately slow.
Most areas of Bonnell soils are used for hay, pasture or woodland. A few areas are being used for growing small grain, corn or soybeans. Native vegetation is mixed hardwood forest. The series is of moderate extent. Ohio County, Indiana, 1979.