Waswanipi River

The Waswanipi River is a tributary of Matagami Lake. The Waswanipi River flows in the Municipality of Eeyou Istchee Baie-James in the administrative region of Nord-du-Québec, in Quebec, Canada.

Watershed of Nottaway River
RegionEeyou Istchee Baie-James (municipality)
Physical characteristics
SourceConfluence of Chibougamau River and Opawica River
  locationEeyou Istchee Baie-James (municipality), Nord-du-Québec, Quebec
  coordinates49°41′07″N 75°57′49″W
  elevation276 m (906 ft)
MouthMatagami Lake
Eeyou Istchee Baie-James (municipality), Nord-du-Québec, Quebec
49°53′28″N 77°15′21″W
256 m (840 ft)
Length139.4 km (86.6 mi)[1]
Basin size31,900 km2 (12,300 sq mi)[1]
Basin features
  left(from the mouth) Opaoca River (via Olga Lake (Waswanipi River)), Little Waswanipi River, Iserhoff River (via Lake Waswanipi), O'Sullivan River (via Lake Waswanipi), Bachelor River, Opawica River
  right(from the mouth) Chensagi River (via Maicasagi Lake), Maicasagi River (via Maicasagi Lake), Chibougamau River


The main hydrographic slopes adjacent to the Waswanipi River are:

The river originates in the village of Waswanipi, in the canton of Ghent, at the junction of the Chibougamau (coming from the east) and Opawica (coming from South). This start of the Waswanipi River is located at 80 kilometres (50 mi) southwest of Chapais and about 115 kilometres (71 mi) southwest of Chibougamau. A bridge spans the river at the village of Waswanipi.

From its source, the course of the river flows over 139.4 kilometres (86.6 mi) distributed as follows:

  • 36.3 kilometres (22.6 mi) almost straight to the west up to a river elbow;
  • 13.4 kilometres (8.3 mi) southwesterly to the northern part of lake Waswanipi (length: 39.4 kilometres (24.5 mi); altitude: 267 metres (876 ft)) where the current bypasses several islands in a kind of delta;
  • 27.5 kilometres (17.1 mi) to the north, then to West up to the East bank of Goéland Lake (Waswanipi River);
  • 21.3 kilometres (13.2 mi) to the north-west, crossing the Goéland Lake (Waswanipi River) (length: 36 kilometres (22 mi); altitude: 262 metres (860 ft));
  • 30.9 kilometres (19.2 mi) to West, forming a curve to the North, and crossing on 9.1 kilometres (5.7 mi) the Northern part of Olga Lake (Waswanipi River) (length: 27.5 kilometres (17.1 mi); altitude: 256 metres (840 ft)) up to its mouth;
  • 10.0 kilometres (6.2 mi) to North-West up to the Nord-East bay of Matagami Lake.

The mouth of the Waswanipi River is located at:

  • 25.1 kilometres (15.6 mi) south-east of the mouth of Matagami Lake;
  • 30.5 kilometres (19.0 mi) north-east of downtown Matagami;
  • 195 kilometres (121 mi) south-east of the mouth of the Nottaway River.

Main tributaries


As early as XVIIIth century, the designation "Waswanipi" means a lake Waswanipi, two rivers and a Native American group. The river has already been referred to as "Olga River". A map of 1898 indicates "R. Waswanipi" for this watercourse. At the beginning of the XXth century, during a voyage of exploration in northern Quebec, geologist and land surveyor Henry O'Sullivan borrows this waterway.[2]

The toponym Waswanipi River was formalized on December 5, 1968, at the Commission de toponymie du Quebec.[3]

Notes and references

See also

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.