The mean annual temperature ranges from about 47 to 54 degrees F, and mean annual precipitation ranges from about 30 to 34 inches. The Chequest , Coppock , Vesser , and Wabash soils are common landscape associates and are on similar landscape positions. The Chequest soils contain more clay and are more acid. The Coppock and Vesser soils have E horizons. Wabash soils contain more clay throughout the solum.
Permeability is moderate.
The soils are subject to flooding. Some small areas are in woods and bluegrass pasture. Native vegetation was sedges and prairie grasses. Southern and southeastern Iowa and possibly northern Missouri. The series is inextensive.