| Lac de Bret | |
|---|---|
 View from the South side | |
  Lac de Bret  Lac de Bret  Lac de Bret | |
| Location | Puidoux, Vaud |
| Coordinates | 46°30′40″N 6°46′20″E / 46.51111°N 6.77222°E |
| Type | natural lake, eutrophic |
| Catchment area | 21 km2 (8.1 sq mi) |
| Basin countries | Switzerland |
| Max. length | 1.5 km (0.93 mi) |
| Max. width | 400 m (1,300 ft) |
| Surface area | 0.36 km2 (0.14 sq mi) |
| Max. depth | 13 m (43 ft) |
| Water volume | 5,000,000 m3 (4,100 acre⋅ft) |
| Surface elevation | 674 m (2,211 ft) |
 | |
Lac de Bret is a lake in the municipality of Puidoux, in the canton of Vaud, Switzerland. It is located north of Lake Geneva. The natural lake is used as a drinking water reservoir for the city of Lausanne. The first dam was built 1875 to supply water for the Lausanne-Ouchy funicular.
