Lac Brenet

from Wikipedia, the free encyclopedia
Lac Brenet
Brenet Lac01.jpg
Lac Brenet from Les Charbonnières
Geographical location Canton of Vaud
Drain (Orbe)
Places on the shore Les Charbonnières
Coordinates 514.66 thousand  /  169.7 thousand coordinates: 46 ° 40 '23 "  N , 6 ° 19' 24"  O ; CH1903:  514660  /  169 700
Lac Brenet (Canton of Vaud)
Lac Brenet
Altitude above sea level 1002  m above sea level M.
surface 80 ha
Maximum depth 18 m


formerly: underground drain

Map Lac de Joux.png
Template: Infobox Lake / Maintenance / EVIDENCE AREA Template: Infobox Lake / Maintenance / EVIDENCE MAX DEPTH

The Lac Brenet is a lake in the canton of Vaud , in western Switzerland . It is located on the extreme northeastern edge of the Vallée de Joux in the Vaud Jura , near the border with France .

Location and surroundings

The mean altitude is 1002 m above sea level. M. and thus 2 m deeper than that of Lac de Joux , from which Lac Brenet is only separated by a 200 m wide land bridge. The lake is 1.5 km long, around 500 m wide and a maximum of 18 m deep. Lac Brenet is bounded in the north-west by the wooded heights of the Risoux Jura chain , in the east by the heights of Les Agouillons and the Dent de Vaulion . The north and east banks are steep, in the south-west there is a small marshland on the edge of the lake.

There are no major above-ground tributaries, only an overflow from Lac de Joux. In the past, the water flowed underground through infiltration funnels on the northwest bank and reached the Source de l ' Orbe through a system of fissures between the rocks . These funnels were sealed with cement. Lac Brenet now serves as a storage basin for the Vallorbe power station , and the water is drained through a tunnel under Mont d'Orzeires and via a pressure pipe to the Vallorbe central station.

The only place near the lake is Les Charbonnières , which belongs to the political municipality of Le Lieu . The branch line that connects Vallorbe with Le Brassus runs along the eastern shore of the lake .


Unlike the Lac de Joux, Lac Brenet is not accessible in winter. It only partially freezes over due to currents, while Lac de Joux is often completely frozen and can be crossed. The beauty of Lac Brenet is of the lovely, romantic kind, underlined by the sculptural forms of the Dent de Vaulion.

See also

Lac Brenet