Lake of Gruyère

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Lake of Gruyère
Lac de la Gruyère
Lac de la Gruyère.jpg
Karte Lac de la Gruyère.png
Coordinates46°39′N 7°06′E / 46.650°N 7.100°E / 46.650; 7.100Coordinates: 46°39′N 7°06′E / 46.650°N 7.100°E / 46.650; 7.100
Primary inflowsSaane/Sarine, Sionge, Jogne
Primary outflowsSaane/Sarine
Catchment area954 km2 (368 sq mi)
Basin countriesSwitzerland
Max. length13.5 km (8.4 mi)
Surface area9.60 km2 (3.71 sq mi)
Max. depth75 m (246 ft)
Water volume220×10^6 m3 (180,000 acre⋅ft)
Surface elevation677 m (2,221 ft) (max)
IslandsIle d'Ogoz, four other islets
Settlementssee article

Lake of Gruyère (French: Lac de la Gruyère; German: Lac de la Gruyère or Greyerzersee) is an artificial lake in the La Gruyère region of the Canton of Fribourg, Switzerland.

Rossens dam

The reservoir was formed between the cities of Bulle and Fribourg, by building the Rossens Dam on the Sarine river in 1948. The arch dam has a height of 83 m and a crest length of 320 m. The reservoir filled in about four months after completion. The dam is operated by the Groupe E SA.

The remains of the castle of Pont (or Pont-en-Ogoz) and a chapel are located on the Ile d'Ogoz, one of the five islets in the lake.

The "Viaduc du Lac de Gruyère" of the A12 motorway was built in the 1970s. The bridge has a total length of 2043 m and crosses three valleys, including two arms of the lake.

Villages and municipalities at the lake
Western shore Eastern shore

External links[edit]