Lac des Autannes is a lake above Grimentz in the canton of Valais, Switzerland. The reservoir has a surface area of 4.5 hectares (11 acres). It is located at an elevation of 2,686 metres (8,812 ft).
| Lac des Autannes | |
|---|---|
| Location | Grimentz, Valais |
| Coordinates | 46.1328°N 7.5428°E / 46.1328; 7.5428 |
| Type | reservoir |
| Basin countries | Switzerland |
| Surface area | 4.5 ha (11 acres) |
| Surface elevation | 2,686 m (8,812 ft) |
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