Grimselsee

Grimselsee
Lake Grimsel
Grimselsee Lake Grimsel is located in Canton of Bern
Grimselsee Lake Grimsel
Grimselsee
Lake Grimsel
Grimselsee Lake Grimsel is located in Switzerland
Grimselsee Lake Grimsel
Grimselsee
Lake Grimsel
Grimselsee Lake Grimsel is located in Alps
Grimselsee Lake Grimsel
Grimselsee
Lake Grimsel
map
LocationGuttannen, Canton of Bern
Coordinates46°34′10.52″N 8°19′38.66″E / 46.5695889°N 8.3274056°E / 46.5695889; 8.3274056
Typeartificial lake, hydroelectric reservoir
Primary inflowsOberaarbach [de], Treibtenbach
Primary outflowsAare
Catchment area74.4 km2 (28.7 sq mi)
Basin countriesSwitzerland
Surface area2.63 km2 (1.02 sq mi)
Water volume95 million cubic metres (77,000 acre⋅ft)
Surface elevation1,908 m (6,260 ft)
Map

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.

Climate

Climate data for Grimselsee (Grimsel Hospiz), elevation 1,980 m (6,500 ft), (1991–2020)
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Mean daily maximum °C (°F) −1.8
(28.8) 		−2.0
(28.4) 		0.3
(32.5) 		3.0
(37.4) 		7.3
(45.1) 		11.4
(52.5) 		13.2
(55.8) 		13.3
(55.9) 		9.7
(49.5) 		6.8
(44.2) 		1.7
(35.1) 		−0.9
(30.4) 		5.2
(41.4)
Daily mean °C (°F) −4.5
(23.9) 		−4.9
(23.2) 		−2.6
(27.3) 		0.2
(32.4) 		4.3
(39.7) 		8.2
(46.8) 		10.2
(50.4) 		10.3
(50.5) 		6.9
(44.4) 		4.0
(39.2) 		−0.7
(30.7) 		−3.5
(25.7) 		2.3
(36.1)
Mean daily minimum °C (°F) −7.4
(18.7) 		−7.9
(17.8) 		−5.5
(22.1) 		−2.7
(27.1) 		1.3
(34.3) 		4.9
(40.8) 		7.0
(44.6) 		7.3
(45.1) 		4.2
(39.6) 		1.4
(34.5) 		−3.1
(26.4) 		−6.2
(20.8) 		−0.6
(30.9)
Average precipitation mm (inches) 190.1
(7.48) 		163.2
(6.43) 		169.1
(6.66) 		150.2
(5.91) 		158.6
(6.24) 		127.3
(5.01) 		126.3
(4.97) 		139.4
(5.49) 		128.6
(5.06) 		129.3
(5.09) 		167.8
(6.61) 		184.1
(7.25) 		1,834
(72.20)
Average snowfall cm (inches) 203.9
(80.3) 		192.7
(75.9) 		202.3
(79.6) 		151.4
(59.6) 		74.9
(29.5) 		21.7
(8.5) 		3.3
(1.3) 		5.2
(2.0) 		21.3
(8.4) 		53.8
(21.2) 		149.5
(58.9) 		179.6
(70.7) 		1,259.6
(495.9)
Average precipitation days (≥ 1.0 mm) 12.1 11.8 13.2 12.5 13.9 14.6 13.4 13.8 11.3 10.8 11.6 12.7 151.7
Average relative humidity (%) 65.9 68.2 73.1 75.6 74.6 76.1 75.3 75.8 75.6 70.0 71.3 66.6 72.3
Mean monthly sunshine hours 71.6 95.2 128.7 123.0 135.3 185.2 177.7 169.1 139.8 114.9 64.1 57.0 1,434.6
Source: NOAA[1]

See also

References

  1. ^ "World Meteorological Organization Climate Normals for 1991–2020". World Meteorological Organization Climatological Standard Normals (1991–2020). National Oceanic and Atmospheric Administration. Archived from the original on 13 December 2024. Retrieved 13 December 2024.


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