Hatmaker soils are on moraines. Slopes range from 0 to 6 percent. The soils formed in loamy glaciofluvial materials overlying silty materials weathered from Coldwater shale. Locke and Brookston soils are in similar landscape positions, but lack residual material above 60 inches. Somewhat poorly drained.
Surface runoff is slow to medium.
Permeability is moderately rapid in the upper material and moderately slow in the underlying material. Most areas are cultivated with corn and soybeans, wheat, and alfalfa-brome the principal crops. Small areas are used for woodland, with northern red oak, white oak, and red maple the dominant species. This series is of small extent. Branch County, Michigan, 1984.