| Saint Lawrence River Fleuve Saint-Laurent, Fleuve St-Laurent, St-Lawrence River, St-Laurent River | |
|---|---|
 Saint Lawrence River near Alexandria Bay | |
 Map of the Saint Lawrence/Great Lakes Watershed | |
| Etymology | Saint Lawrence of Rome |
| Location | |
| Country | Canada, United States |
| Provinces | Ontario, Quebec |
| State | New York |
| Major City | Montreal |
| Metropolitan Area | Greater Montreal |
| Physical characteristics | |
| Source | Lake Ontario |
| - location | Kingston, Ontario / Cape Vincent, New York |
| - coordinates | 44°06′N 76°24′W / 44.100°N 76.400°W |
| - elevation | 40.8 fathoms (74.6 m; 245 ft) |
| Mouth | Gulf of St. Lawrence / Atlantic Ocean |
| - location | Quebec, Canada |
| - coordinates | 49°30′N 64°30′W / 49.500°N 64.500°W |
| - elevation | 0 m (0 ft) |
| Length | 270 nmi (500 km; 310 mi) Excluding the estuary. Ca. 650 nautical miles (1,200 km; 750 mi) if included. |
| Basin size | 391,900 sq nmi (1,344,000 km2; 519,000 sq mi) |
| Discharge | |
| - location | below the Saguenay River |
| - average | 22,000 cu yd/s (17,000 m3/s; 590,000 cu ft/s) |
The Saint Lawrence River (French: fleuve Saint-Laurent; Tuscarora: Kahnawáʼkye; Mohawk: Kaniatarowanenneh, meaning "big waterway") is a big river in eastern North America. It flows between the Canadian province of Quebec & Ontario and the American state of New York, and through the major Canadian city of Montreal. It is the third-largest river in Canada.
The river drains water from the Great Lakes into the Atlantic Ocean. It is more than 1,600 nautical miles (3,000 kilometres; 1,800 miles) long. The river meets the Atlantic Ocean in a big "estuary" or bay, the biggest in the world; this is called the Gulf of Saint Lawrence.
The Canadian cities of Kingston, Montreal, Trois-Rivières, and Quebec City are on this river. The Saint Lawrence Seaway allows ships to go up the river and through the Great Lakes right into the middle of North America.
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