The Mildred River is a tributary of La Trêve Lake, flowing in regional County Municipality (RCM) of Eeyou Istchee James Bay (municipality), in the administrative region of Nord-du-Québec, Canadian province of Quebec, in Canada.
The lower section of the Mildred River flows successively through the townships of Turgis, Julien, Lantagnac and Guettard.
The hydrographic slope of the Mildred River is accessible on road 113 linking Lebel-sur-Quévillon to Chibougamau. This route passes South of the mouth of the Mildred River and passes South of La Trêve Lake and Inconnu Lake.
The surface of the Mildred River is usually frozen from early November to mid-May, however, safe ice movement is generally from mid-November to mid-April.
Geography The main hydrographic slopes adjacent to the Mildred River are: North side: Caupichigau River, Caupichigau Lake, Omo River, Capichigamau Lake, Monsan River; East side: Chibougamau River, Brock River; South side: Chibougamau River, La Trêve Lake, Obatogamau River; West side: Maicasagi River, La Trêve River, Caupichigau River.
The Mildred River rises at the mouth of a Wiki Lake (length: ; altitude: ). The mouth of this head lake is located at: South of the southern boundary of the Assinica Wildlife Sanctuary; Northeast of the mouth of the Mildred River (confluence with La Trêve Lake); Northeast of the mouth of the La Trêve River (confluence with the Maicasagi River); Northeast of the mouth of the Maicasagi River (confluence with Maicasagi Lake); Northeast of the mouth of Goéland Lake (Waswanipi River); Northeast of the mouth of Matagami Lake; Southeast of the mouth of the Nottaway River; North of downtown Matagami
From Mildred River, the Mildred River flows over according to the following segments: westerly in Turgis Township to a small bay on the Northeastern shore of Lake Turgis; southwesterly to the bottom of a bay southeast of Lac aux Quatre Cornices; to the west, crossing the Lake at Four Corners (length: ; altitude: ); to the South, crossing at the end of the segment the "Lac des Petites Plages" (length: ; altitude: ); southwesterly, then West crossing Lake Thomelet (length: ; altitude: ) at the end of the segment; southwesterly to the northeastern boundary of Mildred Lake; southwesterly, crossing Mildred Lake (elevation: ) on its full length; South to mouth.Distances from the Department of Natural Resources Canada's Atlas of Canada (published on the Internet).
The "Mildred River" flows into a river bend on the Northeastern shore of the La Trêve River. From there, it flows Northwest to the Southeast bank of the Maicasagi River. The current flows westward to the East shore of Maicasagi Lake. Then the current flows southwesterly through the Max Passage into the Goéland Lake. The latter is crossed to the northwest by the Waswanipi River which is a tributary of Matagami Lake.
The mouth of the Mildred River located at: Northeast of the mouth of La Trêve Lake; East of the mouth of the La Trêve River (confluence with the Maicasagi River); Northeast of the mouth of the Maicasagi River (confluence with Maicasagi Lake); Northeast of the mouth of Goéland Lake (Waswanipi River); Northeast of the mouth of Olga Lake (Waswanipi River); Northeast of the village center of Waswanipi; Northeast of downtown Matagami.
Toponymy The toponym "Mildred River" was formalized on December 5, 1968, at the Commission de toponymie du Québec, i.e. at the creation of this commission
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