Saint-Maurice River

Water type: River
Continent: North America
Climate: Continental
Country: Canada

The Saint-Maurice River (French: Rivière Saint-Maurice; Atikamekw: Tapiskwan sipi) flows north to south in central Quebec from Gouin Reservoir to empty into the Saint Lawrence River at Trois-Rivières, in the province of Quebec, in Canada.

From its source at Gouin Reservoir, located at the same latitude as the Lac Saint-Jean, the river has a total drop of about 405 metres (1,329 ft), to finally reach the St. Lawrence river at Trois-Rivières. The river is 563 km (350 miles) long and has a drainage basin of 43,300 square kilometres (16,700 sq mi). Saint-Maurice River is one of the most important tributaries of the St. Lawrence River.

The main tributaries of the Saint-Maurice River are:

Matawin River, whose mouth is at Matawin (Hamlet);
Vermillon River (La Tuque) which empties about 23 km, 14 miles (by water) upstream (north) of the Beaumont generating station in La Tuque;
Manouane River (La Tuque) which empties about 115 km, 70 miles (by water) upstream (north) of La Tuque;
La Trenche River (La Tuque) which empties near the La Trenche Generating Station;
Croche River (La Tuque) which empties at north of La Tuque.

Between Weymontachie and Trois-Rivières, the St-Maurice River has 27 tributaries identified as significant enough for downhill wood: Weymontachingue, Manouane, Little Rock, Little Flamand, Windigo, Flamand, Coucoucache, Grande Pierriche (Great Pierriche), Petite Pierriche (Little Pierriche), La Trenche, Vermillion, Croche, Rivière-au-Lait, Bostonnais, Little Bostonnais, Small Stream, Mountain, Caribou, Rivière-aux-Rats, Wessonneau, Little Batiscan River, lOiseau (Bird), Bête Puante (Beast Puante), Mattawin, Mekinac, River au Lac des Pêches and Shawinigan River.

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