The Port of Detroit is located along the west side of the Detroit River, and is the largest seaport in the state of Michigan. The port is overseen by the Detroit/Wayne County Port Authority, a five-member board of directors appointed by the State of Michigan, Wayne County, and the City of Detroit. The authority coordinates river commerce on the waters and shoreline of Wayne County. The port consists of multiple marine terminals handling general, liquid, and bulk cargo as well as passengers. The Port of Detroit’s single most valuable commodity is steel, and the largest commodity handled by tonnage is ore. Other important commodities handled at the port include stone, coal and cement. Detroit, Michigan

Michigan's only port of Lake Erie. The Port of Monroe is the industrial, commercial, and recreational "Gateway" to the City of Monroe, Michigan. Located on Lake Erie and bisected by the River Raisin, the Port of Monroe is Michigan's only port on Lake Erie. It is located 35 miles south of Detroit, Michigan and 17 miles north of Toledo, Ohio. The Port of Monroe provides an important transportation alternative that many cities and states simply cannot offer to their manufacturers, shippers, and suppliers. Monroe, Michigan