Editing Lake Saint-Louis

{{Short description|Lake in Quebec, Canada}}
{{redirect|Lac Saint-Louis|the electoral district|Lac-Saint-Louis}}
{{Infobox lake
 | name = Lake Saint-Louis<br />{{small|{{native name|fr|Lac Saint-Louis}}}}
 | image = St. Louis Lake shore - panoramio.jpg
 | caption = Lake St. Louis at St-Anne-de-Bellevue looking towards [[Île Perrot]]
 | image_bathymetry = Lake st-louis.png
|pushpin_map=Quebec
 | caption_bathymetry = Location map
 | location = [[Montérégie]] region, southwestern [[Quebec]]
 | coords = {{coord|45|24|05|N|73|48|51|W|region:CA-QC_type:waterbody_source:CGNDB_scale:250000|display=inline,title}}
 | type = Natural
 | inflow = [[Beauharnois Canal]], [[Saint Lawrence River]], [[Ottawa River]], [[Saint-Charles River (Varennes)|Saint-Charles River]]
 | outflow = [[Saint Lawrence River]]
 | catchment = 
 | basin_countries = Canada
 | length = 
 | width = 
 | area = 
 | depth = 
 | max-depth = 
 | volume = 
 | residence_time = 
 | shore = 
 | elevation = {{convert|21|m|ft|abbr=on}}
 | islands = 
 | cities = [[Montreal]]
}}

'''Lake Saint-Louis''' ({{langx|fr|Lac Saint-Louis}}, {{IPA|fr|lak sɛ̃ lwi|pron}}) is a lake in southwestern [[Quebec]], Canada, at the confluence of the [[Saint Lawrence River|Saint Lawrence]] and [[Ottawa River|Ottawa]] rivers. The [[Saint 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 [[Lake of Two Mountains]] at [[Sainte-Anne-de-Bellevue, Quebec|Sainte-Anne-de-Bellevue]], the [[Beauharnois Canal]], the [[Soulanges Canal]], the [[Saint-Louis River (Beauharnois)|
Saint-Louis River]], and the [[Châteauguay River]].

The lake is bounded to the north and the east by the [[Island of Montreal]], by [[Beauharnois-Salaberry Regional County Municipality|Beauharnois-Salaberry]], [[Roussillon Regional County Municipality|Roussillon]], and [[Vaudreuil-Soulanges Regional County Municipality|Vaudreuil-Soulanges]]. The town of [[Beauharnois, Quebec|Beauharnois]] with its power-dam and canal lie to the south.

The [[West Island]] shore is mostly built up with private houses, but it 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, Quebec|Dorval]] and [[Dowker Island]]s. Lake St. Louis is the second of three [[fluvial]] lakes on the St. Lawrence River; upstream of it is [[Lake Saint Francis (Canada)|
Lake Saint Francis]], and downstream is [[Lake Saint Pierre]]. Lake St. Louis has an average flow of {{convert|8400|m3/s|cuft/s}}.<ref>[http://ec.gc.ca/stl/default.asp?lang=Fr&n=09C5A944-1 Environment Canada - fluvial lakes of the St. Lawrence] {{webarchive|url=https://web.archive.org/web/20140708171732/http://www.ec.gc.ca/stl/Default.asp?lang=Fr&n=09C5A944-1 |date=2014-07-08}}</ref>

The lake has many species of fish, including [[yellow perch]].

A small map by [[Samuel Champlain]] of 1611 names the lake. The same year, Champlain reported that a young man named Louys was drowned in what is now known as the Lachine Rapids, and in 1870 [[Charles-Honoré Laverdière]] stated that the rapids, and later the lake, were named in honour of the drowned man. A 1656 Jesuit account describes a crossing «Lac Saint Louys».<ref>{{cite web|title=Lac Saint-Louis|url=http://www.toponymie.gouv.qc.ca/ct/ToposWeb/fiche.aspx?no_seq=57085|publisher=Commission de toponymie|accessdate=25 June 2014}}</ref>

In 2014 there was a report of [[fecal coliform]] flowing into the lake from a [[Beaconsfield, Quebec|Beaconsfield]] creek,<ref>{{Cite web|url=http://www.cbc.ca/news/canada/montreal/beaconsfield-s-st-james-creek-contaminated-with-high-levels-of-fecal-coliform-1.2841689|title=Beaconsfield residents had no idea backyard creek was polluted with fecal coliform|website=www.cbc.ca|access-date=2016-04-09}}</ref> and of [[Polychlorinated biphenyl|PCBs]] flowing into it from a [[Pointe-Claire]] industrial site.<ref>{{Cite web|url=https://montrealgazette.com/news/local-news/west-island-gazette/pointe-claire-pays-435000-cleanup-bill-at-pcb-site-on-hymus|title=Pointe-Claire pays $435,000 cleanup bill at PCB site on Hymus|website=Montreal Gazette|language=en-US|access-date=2016-04-09}}</ref>

==References==
{{reflist}}


[[Category:Landforms of Montreal]]
[[Category:Lakes of Montérégie|Saint Louis]]
[[Category:Saint Lawrence River]]