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.

The hydrographic slope of the Théodat River is served by the northern route from Matagami passing 64 km 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:
 * North side: Poles River, La Marte River, Nemiscau River, Le Gardeur Lake;
 * East side: Broadback River, Assinica River;
 * South side: Salamandre River, Broadback River, Nipukatasi River;
 * West side: Evans Lake, Broadback River, Chabinoche River.

The Theodat River originates at the mouth of a little unidentified lake (length: 0.6 km altitude: 317 m). This source is located at:
 * 64.4 km Northeast of the mouth of the Théodat River;
 * 84.6 km Northeast of the mouth of Evans Lake;
 * 132.6 km Northeast of Soscumica Lake;
 * 228 km East of the mouth of the Broadback River);
 * 182 km Northeast of downtown Matagami.

From its source, the Théodat River flows on 117.4 km according to the following segments:

Upper part of Theodat River (segment of 50.1 km crossing the Assinica Wildlife Sanctuary)
 * 7.4 km southwesterly to the East shore of Hobier Lake;
 * 7.9 km Westward across Hobier Lake (length: 8.9 km; altitude: 312 m) to its mouth;
 * 2.6 km Northeast, to a creek (coming from the East);
 * 10.1 km West, to the outlet (coming from the South) of an unidentified lake;
 * 5.5 km Westerly, to the discharge (coming from the North) of an unidentified lake;
 * 8.2 km Northwesterly to the dump (coming from the East) of an unidentified lake;
 * 3.7 km to the West, to the East bank of an unidentified lake;
 * 4.7 km to the North, in particular by crossing on an unidentified lake 2.2 km (altitude: 283 m) 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 km)
 * 18.6 km Westerly across the Théodat Lake (length: 20.1 km; altitude: 283 m), up to at the dam at its mouth;
 * 11.6 km 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 km Westward, crossing at the beginning of the segment on an unidentified lake (altitude: 261 m) up to at the end of a bay on the South shore of Le Gardeur Lake;
 * 9.2 km Northwesterly across Le Gardeur Lake (length: 16.0 km; altitude: 254 m), up to its mouth;
 * 4.8 km North crossing over a small unidentified lake to its mouth.

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

The mouth of Théodat River is located at:
 * 20.2 km East of the mouth of Evans Lake (confluence with the Broadback River);
 * 96.9 km Northeast of Soscumica Lake;
 * 162.5 km East of the mouth of the Broadback River;
 * 155.6 km North of downtown Matagami.

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