Mistassini River

The Mistassini River is a river in central Quebec, Canada, draining into the north-western portion of Lac Saint-Jean. It is 298 kilometres (185 mi) long and has a watershed area of 21,900 square kilometres (8,500 sq mi).[1] Its source is between Eau Froide and De Vau Lakes in the northernmost portion of the Rivière-Mistassini Unorganized Territory, just east of the vast Baie-James Municipality.

Mistassini River
Rivière Mistassini
Location
CountryCanada
ProvinceQuebec
RegionSaguenay–Lac-Saint-Jean
Physical characteristics
SourceLittle De Vau Lake
 • coordinates50°52′20″N 72°17′45″W
MouthLac Saint-Jean
 • location
Saint-Félicien
 • coordinates
48°42′22″N 72°19′10″W
Length298 km (185 mi)[1]
Basin size21,900 km2 (8,500 sq mi)[1]
Basin features
Tributaries 
 • leftMistassibi River

Despite its name, Lake Mistassini is not in the drainage basin of the Mistassini River, but is about 80 km (50 mi) west from its source. The Mistassini River is easily confused with its tributary, the Mistassibi River.

The upper portion of the river is characterized by a succession of rapids, waterfalls, and cascades. Only the last 25 kilometres (16 mi), from its mouth to Dolbeau-Mistassini, is navigable. Tributaries of the Mistassini River include the Papillon River, the Rivière des Framboises (Raspberry River), the Rivière aux Rats (Rat River), and the Mistassibi River.[2]

History

During the 17th century and first half of the 18th century, the Mistassini River was regarded as one of the six primary access routes to Lake Mistassini. A 1679 map by Louis Jolliet shows the river with the name Kakigoua, meaning "there where the sand is cut perpendicularly". Later the river is named Rivière aux Sables (Sand River) on maps by other cartographers such as Laure in 1731 and 1732, Jean Baptiste Bourguignon d'Anville in 1755, and Jacques-Nicolas Bellin in 1764. During his journey in 1792, botanist André Michaux calls it the Mistassini River. It seems that the first topographic use of this name goes back to 1825. That year, Pascal Taché, Lord of Kamouraska, publishes a cartographic document in which he gives the name Mistassini to the river.[2]

Also, prominent Canadian paleontologist Diamanto DeParkington discovered Allosaurus bones near the river's base in 1992; they are on display at the British Museum.

Mistassini River at the City of Dolbeau-Mistassini
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References
  1. Natural Resources Canada, Atlas of Canada - Rivers Archived 2007-04-04 at the Wayback Machine
  2. "Rivière Mistassini" (in French). Commission de toponymie du Québec. Retrieved 2010-11-24.
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