Saint Lawrence River

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The Saint Lawrence River (French: fleuve Saint-Laurent; Tuscarora: Kahnawáʼkye;[2] Mohawk: Kaniatarowanenneh, meaning "big waterway") is a large river flowing approximately from southwest to northeast in the middle latitudes of North America, connecting the Great Lakes with the Atlantic Ocean. It is the primary drainage conveyor of the Great Lakes Basin. The river traverses the Canadian provinces of Quebec and Ontario and forms part of the international boundary between Ontario and New York in the United States.



The Saint Lawrence River originates at the outflow of Lake Ontario between Kingston, Ontario, on the north bank, Wolfe Island in mid-stream, and Cape Vincent, New York. From there, it passes Gananoque, Brockville, Ogdensburg, Massena, Cornwall, Montreal, Trois-Rivières, and Quebec City before draining into the Gulf of Saint Lawrence, the largest estuary in the world.

The river runs 3,058 km (1,900 mi) from the furthest headwater to the mouth and 1,197 km (743.8 mi) from the outflow of Lake Ontario. The farthest headwater is the North River in the Mesabi Range at Hibbing, Minnesota. Its drainage area, which includes the Great Lakes and hence the world's largest system of fresh water lakes, has a size of 1,344,200 km2 (519,000 sq mi), of which 839,200 km2 (324,000 sq mi) is in Canada and 505,000 km2 (195,000 sq mi) is in the United States. The basin covers the provinces of Ontario and Quebec, and the states of Illinois, Indiana, Michigan, Minnesota, New York, Ohio, Pennsylvania, Vermont, and Wisconsin. The average discharge at the mouth is 9,850 m3/s (347,800 cu ft/s).[1]

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