| Obersee | |||||
| Location: | Arosa, Grisons | ||||
| Coords: | 46.7844°N 9.6814°W | ||||
| Type: | oligotrophic, dimictic | ||||
| Basin Countries: | Switzerland | ||||
| Length: | 390m (1,280feet) | ||||
| Width: | 250m (820feet) | ||||
| Area: | 7.1ha | ||||
| Depth: | 7.3m (24feet) | ||||
| Max-Depth: | 13m (43feet) | ||||
| Volume: | 0.5e6m3 | ||||
| Elevation: | 1734m (5,689feet) | ||||
| Frozen: | 5-6 months | ||||
| Pushpin Map: | Canton of Graubünden#Switzerland#Italy#Alps | ||||
| Pushpin Label Position: | bottom | ||||
| Embedded: |
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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 7.1ha at an elevation of 1734 m. Arosa's lower lake (Untersee) is at 1691 m.