Lake Saint-Louis Lac Saint-Louis |
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Location map
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Location | Montérégie region, southwestern Quebec |
Coordinates | 45°24′05″N 73°48′51″W / 45.40139°N 73.81417°WCoordinates: 45°24′05″N 73°48′51″W / 45.40139°N 73.81417°W |
Type | natural |
Primary inflows | Beauharnois Canal, St. Lawrence River, Ottawa River, Saint-Charles River |
Primary outflows | St. Lawrence River |
Basin countries | Canada |
Surface elevation | 21 m (69 ft) |
Settlements | Montreal |
Lake Saint-Louis is a lake in southwestern Quebec, Canada at the confluence of the Saint Lawrence and Ottawa Rivers. The St. Lawrence Seaway passes through the lake.
Lake St. Louis is a widening of the St. Lawrence River in the Hochelaga Archipelago it is also fed by the Ottawa River via the lock in Sainte-Anne-de-Bellevue, the Beauharnois Canal, the Soulanges Canal, the St. Louis River, and the Châteauguay River.
The lake is bounded to the north and east by the Island of Montreal, by Beauharnois-Salaberry, Roussillon, and Vaudreuil-Soulanges. The town of Beauharnois with its power-dam and canal lie to the south.
The West Island shore is mostly built-up with private houses, but includes some parks and clubs such as the Pointe-Claire Canoe Club, and the Pointe-Claire Yacht Club. Islands in the lake include l'Île-Dorval, and Dowker Island. Lake St. Louis is the second of three fluvial lakes on the St. Lawrence River. Upstream of it is Lake St. Francis, and downstream is Lake Saint-Pierre. Its average flow is 8,400 cubic metres per second (300,000 cu ft/s).