Lac de Fully
| Grand lac de Fully | |
|---|---|
| Location | Valais |
| Coordinates | 46°10′44″N 7°5′38″E / 46.17889°N 7.09389°E |
| Type | natural lake, reservoir |
| Catchment area | 4.9 km2 (1.9 sq mi) |
| Basin countries | Switzerland |
| Surface area | 21 ha (52 acres) |
| Surface elevation | 2,135 m (7,005 ft) |
Grand Lac de Fully (or Lac supérieur de Fully) is a reservoir in the canton of Valais, Switzerland. The lake's surface area is 21 ha (52 acres).