| Opinaca Reservoir | |
| Pushpin Map: | Quebec |
| Pushpin Map Caption: | Location in Quebec |
| Location: | Nord-du-Québec, Quebec |
| Coords: | 52.6494°N -76.3317°W |
| Inflow: | Opinaca River |
| Outflow: | Opinaca River |
| Catchment: | 30000km2 |
| Basin Countries: | Canada |
| Area: | 1040km2 |
| Depth: | 8.2m (26.9feet) |
| Max-Depth: | 51m (167feet) |
| Volume: | 8.5km3 |
| Residence Time: | 0.34 |
| Shore: | 2200km (1,400miles) |
| Elevation: | 216m (709feet) |
| Frozen: | December to May |
| Reference: | [1] [2] [3] |
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 216m (709feet) and an area of 1040km2.[4]