| Tannensee | |||||
| Location: | Kerns, Obwalden | ||||
| Coords: | 46.7736°N 8.3061°W | ||||
| Type: | reservoir | ||||
| Inflow: | Tannenbach | ||||
| Outflow: | Tannenbach | ||||
| Catchment: | 1.3km2 | ||||
| Basin Countries: | Switzerland | ||||
| Area: | 33ha | ||||
| Volume: | 3.8e6m3 | ||||
| Elevation: | 1976m (6,483feet) | ||||
| Pushpin Map: | Canton of Obwalden#Canton of Bern#Canton of Valais#Switzerland#Alps | ||||
| Pushpin Label Position: | bottom | ||||
| Embedded: |
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Tannensee is a reservoir in Obwalden, Switzerland. In 1958, Tannenbach and few other creeks were dammed with an earth-fill dam. The reservoir has a volume of 3.8 mio m³ and its surface area is 33ha. The reservoir is used to generate electricity at Kraftwerk Hugschwendi in Kerns.