Etang de la Gruère

Etang de la Gruère is a small lake in the Jura range near Saignelégier, Canton of Jura, Switzerland. The lake and the surrounding bog is a nature preserve. The lake was formed in the 17th century, when a dam was built for a mill.

Etang de la Gruère
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Location	Canton of Jura
Coordinates	47°14′20″N 7°2′48″E / 47.23889°N 7.04667°E / 47.23889; 7.04667
Type	artificial lake, bog
Basin countries	Switzerland
Max. length	600 m (2,000 ft)
Surface area	0.08 km2 (0.031 sq mi)[1]
Max. depth	4.5 m (15 ft)
Surface elevation	998 m (3,274 ft)