Théodat River

The Théodat River is a tributary of Evans Lake, in Regional County Municipality (MRC) of Eeyou Istchee Baie-James (municipality), in the administrative region from Nord-du-Québec, Canadian province of Quebec, in Canada.

Théodat
Watershed of Nottaway River
Location
CountryCanada
ProvinceQuebec
RegionEeyou Istchee Baie-James (municipality)
Physical characteristics
SourceForested lake
 • locationEeyou Istchee Baie-James (municipality), Nord-du-Québec, Quebec
 • coordinates50°50′02″N 76°34′50″W
 • elevation317 m (1,040 ft)
MouthEvans Lake
 • location
Eeyou Istchee Baie-James (municipality), Nord-du-Québec, Quebec
 • coordinates
50°59′19″N 76°34′50″W
 • elevation
241 m (791 ft)
Length117.4 km (72.9 mi)[1]

The hydrographic slope of the Théodat River is served by the northern route from Matagami passing 64 kilometres (40 mi) south-west of the mouth of the river. The surface of the river is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.

Geography

The main hydrographic slopes near the Théodat River are:

The Theodat River originates at the mouth of a little unidentified lake (length: 0.6 kilometres (0.37 mi) altitude: 317 metres (1,040 ft)). This source is located at:

  • 64.4 kilometres (40.0 mi) Northeast of the mouth of the Théodat River;
  • 84.6 kilometres (52.6 mi) Northeast of the mouth of Evans Lake;
  • 132.6 kilometres (82.4 mi) Northeast of Soscumica Lake;
  • 228 kilometres (142 mi) East of the mouth of the Broadback River);
  • 182 kilometres (113 mi) Northeast of downtown Matagami.

From its source, the Théodat River flows on 117.4 kilometres (72.9 mi) according to the following segments:

Upper part of Theodat River (segment of 50.1 kilometres (31.1 mi) crossing the Assinica Wildlife Sanctuary)

  • 7.4 kilometres (4.6 mi) southwesterly to the East shore of Hobier Lake;
  • 7.9 kilometres (4.9 mi) Westward across Hobier Lake (length: 8.9 kilometres (5.5 mi); altitude: 312 metres (1,024 ft)) to its mouth;
  • 2.6 kilometres (1.6 mi) Northeast, to a creek (coming from the East);
  • 10.1 kilometres (6.3 mi) West, to the outlet (coming from the South) of an unidentified lake;
  • 5.5 kilometres (3.4 mi) Westerly, to the discharge (coming from the North) of an unidentified lake;
  • 8.2 kilometres (5.1 mi) Northwesterly to the dump (coming from the East) of an unidentified lake;
  • 3.7 kilometres (2.3 mi) to the West, to the East bank of an unidentified lake;
  • 4.7 kilometres (2.9 mi) to the North, in particular by crossing on an unidentified lake 2.2 kilometres (1.4 mi) (altitude: 283 metres (928 ft)) at the beginning of the segment, up to a small bay on the South shore of the Eastern part of Théodat Lake;

Lower part of Théodat River (segment of 67.3 kilometres (41.8 mi))

  • 18.6 kilometres (11.6 mi) Westerly across the Théodat Lake (length: 20.1 kilometres (12.5 mi); altitude: 283 metres (928 ft)), up to at the dam at its mouth;
  • 11.6 kilometres (7.2 mi) West through marsh areas, forming a curve to the North and a Southwesterly hook at the end of the segment, to the East shore of a unidentified lake;
  • 7.1 kilometres (4.4 mi) Westward, crossing at the beginning of the segment on an unidentified lake (altitude: 261 metres (856 ft)) up to at the end of a bay on the South shore of Le Gardeur Lake;
  • 9.2 kilometres (5.7 mi) Northwesterly across Le Gardeur Lake (length: 16.0 kilometres (9.9 mi); altitude: 254 metres (833 ft)), up to its mouth;
  • 4.8 kilometres (3.0 mi) North crossing over a small unidentified lake to its mouth.[2]

The Theodat River flows into the Northeast bay of Evans Lake, facing an island with a length of 1.1 kilometres (0.68 mi). Evans Lake is crossed to the North by the Broadback River.

The mouth of Théodat River is located at:

Toponymy

The toponym "Théodat River" was formalized on December 5, 1968, at the Commission de toponymie du Québec, i.e. at the creation of this commission[3]

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References
  1. "Atlas of Canada". atlas.nrcan.gc.ca. Retrieved 2017-11-26.
  2. Distances from the Atlas of Canada (published on the Internet) from the Department of Natural Resources Canada.
  3. "Commission de toponymie du Québec - Place name bank - Toponym: "Théodat River"". toponymie.gouv.qc.ca. Retrieved 2017-11-25.

See also
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