| Lac de Tseuzier | |
|---|---|
 View of Lac de Tseuzier with the Weisshorn range in the background | |
  Lac de Tseuzier  Lac de Tseuzier  Lac de Tseuzier  Lac de Tseuzier  Lac de Tseuzier  Lac de Tseuzier | |
| Location | Valais |
| Coordinates | 46°21′3″N 7°25′50″E / 46.35083°N 7.43056°E |
| Type | reservoir |
| Primary outflows | La Liène |
| Catchment area | 18.7 km2 (7.2 sq mi) |
| Basin countries | Switzerland |
| Surface area | 0.85 km2 (0.33 sq mi) |
| Max. depth | 140 m (460 ft) |
| Water volume | 51 million cubic metres (41,000 acre⋅ft) |
| Surface elevation | 1,777 m (5,830 ft) |
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Lac de Tseuzier is an artificial lake in the canton of Valais, Switzerland. It is located in the municipalities of Ayent and Icogne. The reservoir has a volume of 51 mio m³ and a surface area of 0.85 km2 (0.33 sq mi). It was formed by the dams of Zeuzier (156 m) and Proz-Riond (20 m) built in 1957.