Lac de Grand Maison
|Lac de Grand Maison|
|Primary inflows||Eau d'Olle|
|Surface area||2.19 km2 (0.85 sq mi)|
|Max. depth||90 m (300 ft)|
|Surface elevation||1,698 m (5,571 ft)|
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 (constructed between 1978 and 1985) and serves as the upper reservoir in a pumped-storage hydroelectric scheme.
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