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Gigerwaldsee is a 
reservoir
A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation.
Reservoirs can be created in a number of ways, including contro ...
in the municipality of Pfäfers, in the Canton of St. Gallen, Switzerland
). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...
. The reservoir has a volume of 35.6 million m³ and a surface area of .
The arch dam
An arch dam is a concrete dam that is curved upstream in plan. The arch dam is designed so that the force of the water against it, known as hydrostatic pressure, presses against the arch, causing the arch to straighten slightly and strengthen ...
Gigerwald was completed in 1976. It has a height of 147 m.
See also
* List of lakes of Switzerland *List of mountain lakes of Switzerland
This is a list of high-altitude lakes in Switzerland. It includes all significant lakes, natural or artificial, with an area over 4 hectares and a height over 800 metres above sea level. This height approximately corresponds to the transiti ...
External links
* Lakes of the canton of St. Gallen Reservoirs in Switzerland Arch dams {{StGallen-lake-stub