| Wachigabau Lake | |
|---|---|
 Watershed of Nottaway River | |
  Wachigabau Lake | |
| Location | Eeyou Istchee Baie-James (municipality) |
| Coordinates | 49°33′13″N 75°52′32″W / 49.55361°N 75.87556°W |
| Primary inflows |
|
| Primary outflows | Opawica River (Lichen Lake (Opawica River)) |
| Basin countries | Canada |
| Max. length | 31.5 kilometres (19.6 mi) |
| Max. width | 4.3 kilometres (2.7 mi) |
| Surface elevation | 302 metres (991 ft) |
Wachigabau Lake is a freshwater body crossed by the Opawica River in the southeastern part of Eeyou Istchee James Bay (municipality), in Jamésie, in the administrative region of Nord-du-Québec, in the province of Quebec, in Canada. This lake extends in the cantons of Gand, Lespérance, La Roncière and La Ronde.
Forestry is the main economic activity of the sector. Recreational tourism activities come second with a navigable water body of 30.0 kilometres (18.6 mi) across Lichen Lake (Opawica River), plus an extension of 31.5 kilometres (19.6 mi) with Lake Wachigabau. The Wachigabau Lake is partly formed by an enlargement of the Opawica River because of the dam at its mouth. This lake is integrated with Lichen Lake (Opawica River) located on the south side.
The northwestern portion of the Wachigabau Lake watershed is accessible through the forest road route 113 passing north-west of Opawica Lake and connecting Chibougamau to Lebel-sur-Quévillon. The north side of the lake is accessible via the Canadian National Railway which passes over a strip of land between Lakes Opawica and Wachigabau.
The surface of Wachigabau Lake is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.