| Tannensee | |
|---|---|
 | |
  Tannensee Show map of Canton of Obwalden  Tannensee Show map of Canton of Bern  Tannensee Show map of Canton of Valais  Tannensee Show map of Switzerland  Tannensee Show map of Alps | |
| Location | Kerns, Obwalden |
| Coordinates | 46°46′25″N 8°18′22″E / 46.77361°N 8.30611°E / 46.77361; 8.30611 |
| Type | reservoir |
| Primary inflows | Tannenbach |
| Primary outflows | Tannenbach |
| Catchment area | 1.3 km2 (0.50 sq mi) |
| Basin countries | Switzerland |
| Surface area | 33 ha (82 acres) |
| Water volume | 3.8 million cubic metres (3,100 acre⋅ft) |
| Surface elevation | 1,976 m (6,483 ft) |
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Tannensee is a reservoirinObwalden, 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 33 ha (82 acres). The reservoir is used to generate electricity at Kraftwerk Hugschwendi in Kerns.
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