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).