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Blanche River (Thetford Mines) facts for kids

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Blanche River
Native name Rivière Blanche
Country Canada
Province Quebec
Region Chaudière-Appalaches
MRC Les Appalaches Regional County Municipality
Physical characteristics
Main source Forest streams
Thetford Mines
526 m (1,726 ft)
River mouth Bécancour River
Thetford Mines
260 m (850 ft)
Length 8.2 km (5.1 mi)
Basin features
Progression Bécancour River, St. Lawrence River
  • Left:
    (upstream) ruisseau Tanguay
  • Right:
    (upstream) ruisseau Marcoux

The Blanche river (in French: rivière Blanche) is a tributary of the Bécancour River, which flows into the St. Lawrence River. The Blanche river flows in the municipality of Thetford Mines, in the Les Appalaches Regional County Municipality (MRC), in the administrative region of Chaudière-Appalaches, in the province of Quebec, in Canada.


The main neighboring watersheds of the Blanche river are:

The Blanche River draws its source from a mountain stream located on the east side of Mont Saint-Adrien and west of downtown Thetford Mines.

The Blanche river flows on 8.2 kilometres (5.1 mi) towards the south, mainly in forest territory, according to the following segments:

  • 2.0 kilometres (1.2 mi) south to the road;
  • 3.7 kilometres (2.3 mi) southward, up to route 122 which it cuts to the southwest of the city of Thetford Mines;
  • 2.5 kilometres (1.6 mi) towards the south, until its mouth.

The Blanche River empties on the north shore of the Bécancour River, northeast of Black Lake, near an open pit mine.


The toponym Rivière Blanche was formalized on December 5, 1975 at the Commission de toponymie du Québec.

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