Obersee ("upper lake") or Oberer Arosasee is the lake in the center of Arosa, a resort in the Grisons, Switzerland. The lake has a surface area of 7.1 ha (18 acres) at an elevation of 1734 m. Arosa's lower lake (Untersee) is at 1691 m.

Obersee
Obersee is located in Canton of Graubünden
Obersee
Obersee
Obersee is located in Switzerland
Obersee
Obersee
Obersee is located in Italy
Obersee
Obersee
Obersee is located in Alps
Obersee
Obersee
LocationArosa, Grisons
Coordinates46°47′04″N 9°40′53″E / 46.78444°N 9.68139°E / 46.78444; 9.68139
Typeoligotrophic, dimictic
Basin countriesSwitzerland
Max. length390 m (1,280 ft)
Max. width250 m (820 ft)
Surface area7.1 ha (18 acres)
Average depth7.3 m (24 ft)
Max. depth13 m (43 ft)
Water volume0.5 million cubic metres (410 acre⋅ft)
Surface elevation1,734 m (5,689 ft)
Frozen5-6 months
Map
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See also

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  • Winder, Monika (2002). "Zooplankton ecology in high-mountain lakes" (pdf). ETH Zurich.
  •   Media related to Obersee at Wikimedia Commons