Lake of Gruyère

Infobox_lake
lake_name = Lake of Gruyère
Lac de la Gruyère
image_lake = Lac-gruyere.jpg
caption_lake =
image_bathymetry = Karte Lac de la Gruyère.pngcaption_bathymetry = Map
coords = coord|46|39|N|7|06|E|region:CH-FR_type:waterbody|display=inline,title
type = reservoir
inflow = Saane/Sarine, Sionge, Jogne
outflow = Saane/Sarine
catchment = 954 km²
basin_countries = Switzerland
length = 13.5 km
width =
area = 9.60 km²
depth =
max-depth = 75 m
volume = 220,000,000 m³
residence_time =
shore =
elevation = 677 m (max)
islands = Ile d'Ogoz (islet)
cities = "see article"
frozen =

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

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, an islet 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.

Etang de la Gruère is located in the canton of Jura.

External links

*HDS|8658|Lac de la Gruyère|author=Christophe Aeby
* [http://www.swissdams.ch/swisscod/Dams/damForm/default_e.asp?ID=33 Swissdams: Rossens]
*structurae|id=s0007439|title=Rossens Dam
*structurae|id=s0008558|title=Viaduc du Lac de Gruyère
* [http://www.swisscastles.ch/aviation/Fribourg/Ogoz.html Swisscastles: Ogoz]