The Rivière des Mille Îles (, "Thousand Islands River") is a channel of the

Ottawa River The Ottawa River (, ) is a river in the Canadian provinces of Ontario and Quebec. It is named after the Algonquin word "to trade", as it was the major trade route of Eastern Canada at the time. For most of its length, it defines the border betw ...

in southwestern

Quebec Quebec is Canada's List of Canadian provinces and territories by area, largest province by area. Located in Central Canada, the province shares borders with the provinces of Ontario to the west, Newfoundland and Labrador to the northeast, ...

, Canada and runs into the

Rivière des Prairies The Rivière des Prairies (; ), called the Back River in English, is a delta channel of the Ottawa River in southwestern Quebec, Canada. The Kanien'kehá:ka called it ''Skowanoti'', meaning "River behind the island". The river separates the citi ...

. It is long. It divides Île Jésus (the city of Laval) from the North Shore, the northern mainland suburbs of Montreal, such as Deux-Montagnes, Saint-Eustache, Boisbriand, Rosemère,

Lorraine Lorraine, also , ; ; Lorrain: ''Louréne''; Lorraine Franconian: ''Lottringe''; ; ; is a cultural and historical region in Eastern France, now located in the administrative region of Grand Est. Its name stems from the medieval kingdom of ...

, Bois-des-Filion, Sainte-Thérèse, and Terrebonne. The river rises at the narrowing of the

Lake of Two Mountains Lake of Two Mountains (French: ''Lac des Deux Montagnes'') is part of the river delta widening of the Ottawa River in Quebec, Canada, at its confluence with the St. Lawrence River. Lake of Two Mountains has four outflows: Rivière des Mille Îl ...

, where the Ottawa River widens as it feeds into the St Lawrence at

Montreal Montreal is the List of towns in Quebec, largest city in the Provinces and territories of Canada, province of Quebec, the List of the largest municipalities in Canada by population, second-largest in Canada, and the List of North American cit ...

, and flows west to east. It joins the Rivière des Prairies at the eastern tip of Île Jésus, which shortly thereafter joins the St. Lawrence at the eastern tip of the

Island of Montreal The Island of Montreal (, ) is an island in southwestern Quebec, Canada, which is the site of a number of municipalities, including most of the city of Montreal, and is the most populous island in Canada. It is the main island of the Hochelag ...

. As its name suggests, the river contains many small islands which are part of the Hochelaga Archipelago. It is not to be confused with the

Thousand Islands The Thousand Islands (, ) constitute a North American archipelago of 1,864 islands that straddles the Canada–US border in the Saint Lawrence River as it emerges from the northeast corner of Lake Ontario. They stretch for about downstream fr ...

at the head of the

St. Lawrence River The St. Lawrence River (, ) is a large international river in the middle latitudes of North America connecting the Great Lakes to the North Atlantic Ocean. Its waters flow in a northeasterly direction from Lake Ontario to the Gulf of St. Lawren ...

, in

Ontario Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...

and

New York State New York, also called New York State, is a state in the northeastern United States. Bordered by New England to the east, Canada to the north, and Pennsylvania and New Jersey to the south, its territory extends into both the Atlantic Ocean and ...

See also

References

Further reading