Opinaca Reservoir

Opinaca Reservoir is a lake in the northwest of the province of Quebec in Canada. It is located 140 km east of James Bay, south of the Robert-Bourassa Reservoir and south of Lac Sakami. It is connected by a 41 km narrows to the Eastmain Reservoir located east.

Opinaca Reservoir is a reservoir of the James Bay Project with an elevation of 216 m and an area of 1040 km2.