Lac du Vernex, Reservoir in Rossinière, Switzerland

Lac du Vernex is a mountain reservoir sitting at 859 meters elevation between the peaks of Pointe de Cray and Planachaux. The water spreads across roughly 32 hectares and collects flow from the surrounding alpine terrain.

Lac du Vernex was formed by the construction of the Rossinière dam in 1973, which turned this stretch of the Sarine into a reservoir. The lake is also called lac de Rossinière after the village on its shore. Sediment carried by the river silts it up by 40,000 m³ of alluvium a year; without intervention it would be filled in by 2035.

The lake is also called Lac de Rossinière, after the village on its shore in the Pays d'Enhaut. It was formed in 1973 by the Rossinière dam on the Sarine, and the reservoir is silting up with 40,000 m³ of sediment a year; without intervention it would be filled in by 2035.

You can reach the water from Rossinière on marked walking paths that are easy to follow from the village. Parking and information signs are located near the shore, making orientation straightforward for most visitors.

The lake traps about 40,000 cubic metres of sediment each year; at that rate, without intervention, it would be filled in by 2035. The dam that created it, the Rossinière dam, dates from 1973.