Bettenauer Weiher (or Bettenauerweier, coll. "Betti") is a reservoir between Jonschwil and Oberuzwil in the Canton of St. Gallen, Switzerland. The reservoir formed in the 15th century when a dam was built for a fish pond. Today, fishing in the lake is only allowed for retired persons of the local industrial enterprise Bühler AG, to which it belongs.

Bettenauer Weiher
Bettenauer Weiher is located in Canton of St. Gallen
Bettenauer Weiher
Bettenauer Weiher
Bettenauer Weiher is located in Switzerland
Bettenauer Weiher
Bettenauer Weiher
Bettenauer Weiher is located in Alps
Bettenauer Weiher
Bettenauer Weiher
LocationOberuzwil, Canton of St. Gallen
Coordinates47°25′48″N 9°06′12″E / 47.43000°N 9.10333°E / 47.43000; 9.10333
Typereservoir
Primary inflowsMülelibach
Basin countriesSwitzerland
Max. length400 m (1,300 ft)
Max. width100 m (330 ft)
Surface area0.01 km2 (0.0039 sq mi)
Max. depth2 m (6 ft 7 in)
Surface elevation587 m (1,926 ft)
Map

The lake is an amphibian spawning area of national importance in Switzerland.

Bettenauer Weiher in Winter
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