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Lake, U.S. and Canada. The largest of the five Great Lakes, Superior is the world's largest freshwater lake. It is 383 mi (616 km) long and 160 mi (258 km) at its widest, with an area of 31,800 sq mi (82,362 sq km) and depths reaching 1,330 ft (405 m). Lake Superior is known for its picturesque coastline and its numerous shipwrecks; its islands include Isle Royale. The head of the Great Lakes–Saint Lawrence Seaway system, it is connected to Lake Huron at its southeastern end via the Sault Ste. Marie locks. Ships transport grain, flour, and iron ore during the eight-month navigation season. The French Jesuit missionary Claude-Jean Allouez charted the lake in 1667. The region came under British control (1763–83) and remained in British hands until 1817, when the American Fur Co. took over south of the Canadian border.
This entry comes from Encyclopædia Britannica Concise. For the full entry on Superior, Lake, visit Britannica.com.