Corunna soils are associated in some places where a thin sandy loam layer overlies the loam till. Poorly drained and very poorly drained. May. Potential surface runoff is negligible to low. Permeability is moderately slow. A large part of this soil is used for cropland.
Principal crops are corn, small grain, beans, and hay.
A small part is in permanent pasture or in woodland of American elm, red maple, white ash, hickory, American basswood, and swamp white oak. South-central lower Michigan. The series is of large extent. Sanilac County, Michigan, 1955.