Deepest reservoirs in France

As of 2026-10-16, Lac de Cap-de-Long tops the list with 130 m.

1. #1 Lac de Cap-de-Long — 130 m

   lake in France

   source Wikidata
2. #2 Lac Bleu de Lesponne — 121 m

   lake in Hautes-Pyrénées, France

   source Wikidata
3. #3 Lac de Monteynard-Avignonet — 115 m

   reservoir in France

   The Lac de Monteynard-Avignonet is an artificial water reservoir for the Électricité de France (EDF) power station on the river Drac. It belongs to the department of Isère. It is bounded by the canyons of the Drac and Ebron. Read more on Wikipedia.

   Wikidata
4. #4 Sautet Lake — 115 m

   reservoir in France

   source Wikidata
5. #5 Lac de Bort-les-Orgues — 110 m

   reservoir in France

   Lac de Bort-les-Orgues is a lake located on the border of the Cantal, Corrèze and Puy-de-Dôme departments, France. At an elevation of 437 m, its surface area is 10.72 km2. Read more on Wikipedia.

   Wikidata
6. #6 Lac du Portillon — 101 m

   lake in the Pyrénées

   source Wikidata
7. #7 Lac de Castillon — 100 m

   lake in France

   source Wikidata
8. #8 Lac de Gnioure — 100 m

   body of water

   source Wikidata
9. #9 Lac de Vouglans — 100 m

   reservoir

   source Wikidata
10. #10 Lake of Sainte-Croix — 93 m

    artificial lake in southern France

    source Wikidata