Grimselsee

Grimselsee Lake Grimsel
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Location	Guttannen, Canton of Bern
Coordinates	46°34′10.52″N 8°19′38.66″E / 46.5695889°N 8.3274056°E / 46.5695889; 8.3274056
Type	artificial lake, hydroelectric reservoir
Primary inflows	Oberaarbach [de], 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)

The Grimselsee or Lake Grimsel is an artificial lake near the Grimsel Pass in the Canton of Bern, Switzerland. With a volume of 95 mio m³ (20.9 billion imperial gallons, 20.1 billion US gallons), it is larger than other hydroelectric reservoirs in the Aare headwaters 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.

• List of lakes of Switzerland
• List of mountain lakes of Switzerland

• Media related to Grimselsee at Wikimedia Commons
• KWO: Lake Grimsel

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