Grimselsee

The Grimselsee or Lake Grimsel is an artificial lake near the Grimsel Pass in the Canton of Berne, Switzerland. With a volume of 95 mio m³, it is larger than other hydroelectric reservoirs in the region: Oberaarsee, Räterichsbodensee and Gelmersee. The dam was completed in 1932 and is operated by Kraftwerke Oberhasli AG (KWO). It is located in the municipality of Guttannen.

Lake Grimsel and Räterichsbodensee in the background.

Grimselsee Lake Grimsel
map
Location	Guttannen, Canton of Berne
Coordinates	46°34′10.52″N 8°19′38.66″E
Type	artificial lake, hydroelectric reservoir
Primary inflows	Oberaarbach, Treibtenbach
Primary outflows	Aare
Catchment area	74.4 km2 (28.7 sq mi)
Basin countries	Switzerland
Surface area	2.63 km2 (1.02 sq mi)
Water volume	95 million cubic metres (77,000 acre⋅ft)
Surface elevation	1,908 m (6,260 ft)