Lac de Mauvoisin is a reservoir in the canton of Valais, Switzerland. The reservoir is formed by the Mauvoisin Dam, which is 250 metres (820 ft) high. The dam is the 11th highest in the world, and the 6th highest arch dam. It was built in 1951–1957, and raised by 13.5 metres (44 ft) in 1991.

Lac de Mauvoisin
View of the lake from the dam, July 2008
Lac de Mauvoisin is located in Canton of Valais
Lac de Mauvoisin
Lac de Mauvoisin
Lac de Mauvoisin is located in Switzerland
Lac de Mauvoisin
Lac de Mauvoisin
Lac de Mauvoisin is located in Alps
Lac de Mauvoisin
Lac de Mauvoisin
LocationValais
Coordinates45°59′53″N 7°20′58″E / 45.99806°N 7.34944°E / 45.99806; 7.34944
Typereservoir
Primary outflowsDranse de Bagnes
Catchment area113.5 km2 (43.8 sq mi)
Basin countriesSwitzerland
Max. length4.9 km (3.0 mi)
Surface area2.08 km2 (0.80 sq mi)
Max. depth180 m (590 ft)
Surface elevation1,961 m (6,434 ft)
Map

The reservoir lies in the upper Val de Bagnes, between the massif of the Grand Combin, one of the highest mountains of the Alps, and La Ruinette. The highest peak visible from the lake is the Combin de la Tsessette (4,135 metres (13,566 ft)).

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See also

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