Mistassibi River

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Not to be confused with the Mistassini River.
Mistassibi River
Country Canada
Province Quebec
Region Saguenay–Lac-Saint-Jean
 - left North-East Mistassibi River
Source Unnamed wilderness
 - elevation 575 m (1,886 ft)
 - coordinates 51°07′31″N 72°03′06″W / 51.12528°N 72.05167°W / 51.12528; -72.05167
Mouth Mistassini River
 - location Dolbeau-Mistassini
 - elevation 115 m (377 ft)
 - coordinates 48°53′04″N 72°13′05″W / 48.88444°N 72.21806°W / 48.88444; -72.21806Coordinates: 48°53′04″N 72°13′05″W / 48.88444°N 72.21806°W / 48.88444; -72.21806
Length 298 km (185 mi)
Basin 9,325 km2 (3,600 sq mi)

The Mistassibi River is a river in central Quebec, Canada. It is 298 kilometres (185 mi) long and has a drainage basin of 9,325 square kilometres (3,600 sq mi). Its source is an area with unnamed lakes about 50 kilometres (31 mi) east of Canso Bay of Lake Albanel, eastern neighbor of Lake Mistassini.[1]

The name Mistassibi, only in use since the late 19th century, comes from the Innu-aimun language, meaning "large river". Its alternate name used to be Rivière aux Foins (Hay River).[1]

Just like the nearby Mistassini River, the Mistassibi River runs in a north-south direction. It passes through Lac au Foin (Hay Lake) and among its tributaries are the aux Oiseaux, du Dépôt, and North-East Mistassibi Rivers. It drains into the Mistassini River at Dolbeau-Mistassini.[1]

The company Minashtuk Inc. operates a 12 MW run-of-the-river hydroelectric power station on the Mistassibi River since 2000.


  1. ^ a b c "Rivière Mistassibi" (in French). Commission de toponymie du Québec. Retrieved 2010-11-26.