|Location||Guttannen, Canton of Berne|
|Catchment area||19.4 km²|
|Max. length||2.8 km|
|Surface area||1.47 km²|
|Max. depth||90 m|
|Surface elevation||2,303 m|
Oberaarsee is a reservoir in the Grimsel area, part of the municipality of Guttannen, Switzerland. The Oberaar glacier is located west of the lake. Its surface area is 1.47 km². The Oberaar dam was completed in 1953.
It is drained by the Oberaarbach, which flows into the Grimselsee.
Media related to Oberaarsee at Wikimedia Commons
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