They are very deep soils that are deep to stratified gravelly and sandy outwash.
Permeability is moderate in the subsoil and very rapid in the substratum.
Slopes range from 0 to 2 percent. Sleeth loam - on a 1 percent slope in a cultivated field. The depth to the base of the argillic is 40 to 60 inches. A silty layer at the surface is as much as 20 inches thick in some pedons. A value of 3 is allowed in uncultivated pedons.