Lac de Moiry, Reservoir in Anniviers, Valais, Switzerland

Lac de Moiry is a reservoir in the Val d'Anniviers, Valais, held back by a 148-metre concrete arch dam completed in 1958 and designed by Alfred Stucky. The lake lies at 2,248 metres between the Garde de Bordon, the Corne de Sorebois and the Sasseneire, covers 1.4 km² and holds 78 million m³ of water. A restaurant stands by the dam.

Built between 1954 and 1958 by 1,200 workers, the 148-metre arch dam was designed by Alfred Stucky. Cement came from Sierre and gravel from the moraines of the Moiry Glacier, mixed into concrete on site. The dam feeds the Gougra power plant, which produces 588 GWh per year.

The dam and lake take their name from the Moiry valley above Grimentz, in the Anniviers municipality. The dam appears as the Barrage des Diablons in Jacques Martin's comic album Le Repaire du Loup, and a restaurant stands beside the structure. The national hiking route No. 6, Alpenpässe-Weg, and the local Tour du Lac de Moiry cross the dam wall.

The reservoir is reached from Sierre through the Val d'Anniviers; Grimentz is the last larger village before the dam. Bus line 452 runs from the Grimentz cable car over the dam to Lac de Châteaupré at 2352 m. National hiking route No. 6 (Alpenpässe-Weg) and local route No. 221 (Tour du Lac de Moiry) of SchweizMobil cross the dam wall.

The dam wall carries the national hiking route No. 6, the Alpenpässe-Weg, and the local Tour du Lac de Moiry (No. 221) of SchweizMobil. Bus line 452 from Grimentz, télécabine crosses the wall and continues to Lac de Châteaupré at 2352 m. The reservoir holds 78 million m³ of water, which feeds the Gougra power plant producing 588 GWh per year.