The poorly or very poorly drained Granby series is associated in some areas. Somewhat poorly drained. Permeability is moderately rapid. Thetford soils are cultivated in most areas. Corn, soybeans, wheat, oats, and grass-legume hay are the principal crops.
Some areas are idle or used for permanent pasture.
Native vegetation was principally mixed hardwoods, with northern red oak, bitternut hickory, red maple, and American elm the dominant species. The series is of large extent. Clinton County, Michigan, 1974.