Reference articles on history, science, culture and more
Surprise meSurprise meSubscribe
Encyclopedia

Tannensee

Reservoir in Kerns, Obwalden

Wikipedia contributorsAdapted for Fathomly · View authors
1 min read
Source updated July 30, 2026
Image credit is listed at the end of this article.

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 33 ha (82 acres). The reservoir is used to generate electricity at Kraftwerk Hugschwendi in Kerns.

Watch videos about TannenseeExplainers and documentaries on YouTube (opens in a new tab)

Sources and credits

This article is adapted from the Wikipedia article “Tannensee”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

Images, from Wikimedia Commons:

Fathomly is not affiliated with or endorsed by the Wikimedia Foundation. Spotted a problem? Tell us.

Continue exploring

Related topics

List of lakes of Switzerland

This article contains a sortable table listing all major lakes of Switzerland. The table includes all still water bodies located either entirely or partly in Switzerland, both natural and artificial, that have a surface area of at least 30 hectares, regardless of water volume, maximum depth or other metric.

List of mountain lakes of Switzerland

This is a list of high-altitude lakes of Switzerland. It includes all significant lakes located either entirely or partly in Switzerland, both natural and artificial, with an area of at least 4 ha and a location at over 800 m (2,600 ft) above sea level.