Mistassibi River

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]

Mistassibi River
Location
Country	Canada
Province	Quebec
Region	Saguenay–Lac-Saint-Jean
Physical characteristics
Source	Unnamed wilderness
• coordinates	51°07′31″N 72°03′06″W
• elevation	575 m (1,886 ft)
Mouth	Mistassini River
• location	Dolbeau-Mistassini
• coordinates	48°53′04″N 72°13′05″W
• elevation	115 m (377 ft)
Length	298 km (185 mi)
Basin size	9,325 km2 (3,600 sq mi)
Basin features
Tributaries
• left	North-East Mistassibi River

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.