F. Mean annual precipitation is approximately 28 to 33 inches. These are the LeRoy , Lomira , Ripon , and St. Charles soils. These soils, except Ripon, occupy areas next to bodies of Knowles where the depth to dolomitic limestone bedrock exceeds 60 inches. Ripon soils have a mollic epipedon and, in many places, are in complex association with Knowles soils. Surface runoff is slow or medium.
Permeability is moderate.
Steeper areas of this soil usually are kept in pasture. The Knowles soils are of moderate extent. Columbia County, Wisconsin, 1972. This soil was formerly included with the Whalan soils.