St. Mary's River, Ontario

The most important area along the river are the rapids and the twin cities of Sault Ste. Marie, Ontario and Sault Ste. Marie, Michigan. The rapids of the St. Mary's (Sault Sainte Marie in French) are just below the river's exit from Lake Superior. Before Europeans arrived, native Americans fished, traded, and maintained a portage around the rapids. The current name was assigned by the first French explorer, Etienne Brule in 1621.

Fort St. Joseph was built on the Canadian shore in 1796 to protect a trading post, and ensure continued British control of the area. The fort fulfilled its role in the War of 1812. The first modern lock was built in 1855 and is known as the American Lock. Competitive pressure led to the construction of a Canadian Lock in 1895. The locks were made a part of the Great Lakes Waterway system in 1959. External link Canadian Heritage web site (http://www.chrs.ca/Rivers/StMarys/StMarys_e.htm)