The soils formed in loess between 20 and 36 inches thick and in the underlying, highly calcareous gravelly loam or gravelly sandy loam glacial till. Mean annual temperature ranges between 45 and 49 degrees F, and mean annual precipitation ranges between 28 and 33 inches. These are the LeRoy and St. Charles soils. LeRoy soils are on slopes in the Lomira landscape where the silty mantle is less than 20 inches thick. St. Charles soils are on slopes where the silty mantle is more than 40 inches thick.
Permeability is moderate.
Most of this soil is under cultivation. Corn, small grain, forage, and canning crops are grown. Native vegetation was mainly deciduous forest composed mainly of oak and hickory. This soil is of moderate extent. Dodge County, Wisconsin, 1970.