| Lac de Longemer | |
|---|---|
| Location | Vosges |
| Lake type | glacial |
| Primary outflows | Vologne |
| Basin countries | France |
| Max. length | 2000 m |
| Max. width | 500 m |
| Surface area | 0.76 km² |
| Max. depth | 34 m |
| Surface elevation | 736 m |
Lac de Longemer is a lake in Vosges, France. At an elevation of 736 m, its surface area is 0.76 km2 (0 sq mi).