The moderately coarse substratum phase has textures of loam, fine sandy loam or sandy loam. It has 12 to 22 percent clay and more than 40 percent total sand. Thin strata of coarser texture are within the range. These are the Lawet and Revere series. Lawet soils formed in alluvium and do not have rock fragments.
Revere soils have a gypsic horizon.
Harps soils are on till plains or moraines on narrow rims or shorelines of depressions and on slight rises within poorly defined swales or flats, and in a few places in swales or poorly defined drainageways. Slope gradients are 0 to 3 percent. Harps soils formed in glacial till of Wisconsin age or in alluvium derived from till. Thickness of the parent material ranges from 4 feet to more than 20 feet. F. Mean annual precipitation ranges from about 26 to 36 inches.