These sediments are of the Des Moines lobe of the Late Wisconsinan glaciation. The very poorly drained Dassel soils are in depressions and swales. The poorly drained Fieldon soils have carbonates throughout and are on terrain that is similar to that of the Darfur soils. The moderately well drained Grogan soils are on slight rises. The moderately well and somewhat poorly drained sandy Litchfield soils and the somewhat excessively drained sandy Lasa soils are associated in some places.
Surface runoff is negligible to low.
Permeability is moderate or moderately rapid in the upper mantle and moderately rapid in the subsoil and underlying material. Native vegetation was a wet-site community of the tall grass prairie. Blue Earth County, Minnesota, 1975. Competing series and other updates will be made later. Refer to MAES Central File Code No. 976 for results of laboratory analysis of a representative pedon on this series.