2.19 km (0.85 sq mi)
90 m (300 ft)
| Alps, Grand‑Maison Dam, Lac du Verney, Col du Glandon, Col de la Croix de Fer|Lac de Grand Maison Wikipedia
Lac de Grand Maison is a lake in Isère, France. At an elevation of 1698 m, its surface area is 2.19 km². It is created by the Grand'Maison Dam and serves as the upper reservoir in a pumped-storage hydroelectric scheme.