Obersee (Arosa)

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Obersee
Arosa, Switzerland - Lake (1).jpg
Reliefkarte Graubunden.png
Red pog.svg
Obersee
Location Arosa, Grisons
Coordinates 46°47′04″N9°40′53″E / 46.78444°N 9.68139°E / 46.78444; 9.68139 Coordinates: 46°47′04″N9°40′53″E / 46.78444°N 9.68139°E / 46.78444; 9.68139
Type oligotrophic, 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

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.

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