Wichelsee
| Wichelsee | ||
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| Wichelsee near Alpnach | ||
| Geographical location | Central Switzerland | |
| Tributaries | Sarner Aa | |
| Drain | Sarner Aa | |
| Location close to the shore | Alpnach | |
| Data | ||
| Coordinates | 663 515 / 196820 | |
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| Altitude above sea level | 459 m above sea level M. | |
| surface | 22 ha | |
| length | 1.8 km | |
| width | 170 m | |
| volume | 400 m³ | |
| scope | 4.262 km | |
| Maximum depth | 6 m | |
| Middle deep | 1.35 m | |
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particularities |
Reservoir, nature reserve |
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The Wichelsee is a lake in central Switzerland in the canton of Obwalden . It extends in a south-west-north-east direction and hugs a rock face on its south-east bank. It is approximately 1.8 km long and has a maximum width of 170 m. The lake is located near the villages of Alpnach and Kägiswil in the area of the municipalities of Alpnach and Sarnen .
use
The lake was created in 1955 when a dam was built. Most of the outflowing water is conducted in a 1,860 m long pressure tunnel with a net gradient of 23 m to the Eichi low-pressure run-of-river power plant , which is operated by the Sarneraa AG power plant in Alpnach. With two vertical 1.2 MW Kaplan turbines, the power plant produces an average of 13.9 million kWh per year. 30% of the power plant belongs to the canton of Obwalden. The municipalities of Alpnach and Sarnen each have a 26% share and Centralschweizerische Kraftwerke AG has an 18% share. The latter also operates the power plant.
nature
The lake and the surrounding area have been under nature protection since 2005. In 2007 a bypass water was built into the dam so that the dam can be flooded in the event of flooding. A fish pass ( fish pass ) was also built into this residual water section, as the weir is on the natural migration route of the fish.
The lake and the adjacent floodplain forest are a playground and breeding ground for a multitude of different bird species such as eagle owls, tufted ducks and a colony of swans. Therefore and also because of its location, the Wichelsee is a decidedly recreational area. Because of the rock wall in the background that rises to the core forest, the lake is a suitable photo motif.
The Wichelsee was also affected by the severe storm in August 2005 . Driftwood accumulated at the weir and the water masses destroyed a road and a footbridge below the weir.
Web links
- Images from the flood in August 2005 Website of the building and spatial development department of the canton of Obwalden, accessed May 4, 2017
Individual evidence
- ↑ Fish counted, license fulfilled ( memento from March 18, 2012 on WebCite ), article in the ONZ Obwalden and Nidwalden newspaper from November 20, 2010. Archived from the original online version on March 18, 2012.
- ↑ Sarneraa power plant - Alpnach-Dorf (PDF; 1.4 MB) ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. Leaflet from Centralschweizerischen Kraftwerke AG, accessed on August 18, 2015
- ↑ Reconstruction and renovation of the Sarneraa power plant ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. Article on the website of Centralschweizerische Kraftwerke AG, accessed on April 15, 2011
- ↑ Clear the way for river trout and Co. ( Memento from March 18, 2012 on WebCite ), article in the ONZ Obwalden and Nidwalden newspaper from September 4, 2010. Archived from the original online version on March 18, 2012.
