Opaoca River


The Opaoca River is a tributary of Olga Lake, in Regional County Municipality of Eeyou Istchee James Bay, in the administrative region of Nord-du-Québec, Canadian province of Quebec, in Canada.
The course of the river successively crosses the townships of Bourbaux, Berthiaume, Noyelles, Le Tardif, Comporte and Pouchot.
The hydrographic slope of the Opaoca River is served by various forest roads including the R1026 road. The northern route from Matagami passing at to the northwest of the mouth of the Opaoca 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 Opaoca River are:
The Opaoca River originates at the mouth of Lake Anorthosite. This lake straddles the townships of Bourbaux, Berthiaume and Noyelles.
The mouth of this lake is located at:
From its source, the "Opaoca River" flows on according to the following segments:
The "Opaoca River" empties in Elisabeth bay, an extension of Olga Lake. The latter flows is crossed at the North by the Waswanipi River.
The mouth of the Opaoca River is located at:
Presumably of Cree origin, the origin of this hydronym would be a deviation from the word "opawakaw", meaning that there is "a pass, a narrowing between sandbanks". The “Commission de géographie du Québec” had formalized this name in 1948. The graphism Opaoka appears on the map of the township of Pouchot designed by the Department of Lands and Forests in 1965.
The toponym "Opaoca River" was formalized on December 5, 1968, at the Commission de toponymie du Quebec, i.e. the creation of this commission