Lac de Montsalvens

Oldest arch dam in Europe

The Lac de Montsalvens is a Swiss reservoir.

The reservoir is on the way to the Jaun Pass, between the towns of Broc and Charmey. The lake fills parts of the two valleys Javroz and Motélon below the village Charmey.


It was planned investment on the one hand by the Lausanne Professor Jean Landry (Total planning) and engineer Heinrich Eduard Gruner ( and Alfred Stucky from the engineering firm) from Basel on the other.

At the Grossrats session of 17-18. May 1918 approved the construction of the dam.

The dam Montsalvens could be completed in 1920, and 1921, the lake was filled with water.

The cost of construction of the facility was estimated at 11 million SFr. In the end, the total cost amounted to 21 million SFr but what constitutes an excess of 91%. This cost explosion brought the TPF power plants in the short term in serious financial difficulties.


  • Lakes in Switzerland: Natural and reservoirs, Federal Office for the Environment FOEN, 2007 → lakes in Switzerland ( PDF)

Swiss reservoirs with a capacity of about 10 million m³: Albigensian Nasee | Arnensee | Lago Bianco | Brenet | Lago dei Cavagnöö | Lac de Cleuson | Lai da Curnera | Davosersee | Lac des Dix | Lac d' emosson | Engstlensee | Gelmersee | Giger Waldsee | Göscheneralpsee | Greyerzersee | Griessee | Grimselsee | Lac de l ' Hongrin | Klingnauer reservoir | Klöntalersee | Lago di Lei | Limmerensee | Lago di Livigno | Lago di Lucendro | Lungerersee | Lago di Luzzone | Lai da Marmorera | Mattmarksee | Lac de Mauvoisin | Lac de Moiry | Lake Montsalvens | Lac de Moron | Lai da Nalps | Lago del NARET | Oberaarsee | Lac de Perolles | Lago di Poschiavo | Räterichsbodensee | Lago Ritom | Lac de Salanfe | Lago del Sambuco | Schiffenensee | Sihl | Lai da Sontga Maria | Sufnersee | Toules | Lago Tremorgio | Lac de Tseuzier | Lac du Vieux emosson | Lago di Vorgorno | Wägitalersee | Wohlensee | Zervreilasee

  • Lake in the Canton of Fribourg
  • Reservoir in Europe
  • Reservoir in Switzerland
  • Dam in Switzerland
  • Arch dam
  • Aare River system
  • Built in the 1920s
  • Cultural property of national significance in the canton of Fribourg
  • Charmey
  • Broc FR
  • Crésuz
  • Châtel- sur -Montsalvens