Largest lakes & reservoirs in France by shoreline length
The length of the exterior shoreline around a lake is measured at the lake’s normal elevation. The shoreline length can be considerably shorter or longer when lake water levels are lower or higher than normal. A lake with many coves has a much longer shoreline than a lake of similar surface area that is nearly circular in shape.When known, the shoreline miles that we report in our statistics include only the lake’s exterior shoreline, and exclude the shorelines of islands located within a lake’s boundaries. In lakes with many islands, those islands’ combined shorelines may exceed a lake’s exterior shoreline.
You can find many of the world’s longest-shoreline lakes on LakeLubbers. Note: For some lakes, "Longest Shorelines" data is unknown or does not apply, so this table may display fewer lakes than the total 14 articles we have published for France lakes.
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Below are lakes within France > Compared by longest shoreline length in miles. This list does not represent all lakes in France, only the 14 France lake articles we have published on the LakeLubbers website.
Lake name ![]() |
Shoreline length in miles ![]() |
Lake description |
---|---|---|
Lake Geneva, France & Switzerland (France, Geneva Region, Switzerland, Rhone-Alps Region, Southern France, Southern France Region, Switzerland, Valais Region, Switzerland, Vaud Region, Switzerland) |
104 mi | Also known as Lac Leman Shaped like a crescent moon, Lake Geneva is cradled in the Alps Mountain Range with two-thirds of its 104 shoreline miles in Switzerland and the other… |
Lac de Serre-Poncon (France, Provence-Alps-Cote d'Azur Region, Southern France, Southern France Region) |
50 mi | Lac de Serre-Poncon in the Provence Region of France proves that mankind can create a treasure of nature while solving a problem. Building a dam acros… |
Lac d’Hourtins-Carcans (Aquitaine Region, Southwestern France, France, Southwestern France Region) |
29 mi | Also known as Lake Hourtins, Lac Carcans-Hourtin-Maubuisson Beautiful Lac d’Hourtins-Carcans is nestled within France’s Aquitaine region. One of the longest and largest bodies of water in the country, it has a… |
Lake Bourget (France, Rhone-Alps Region, Southern France, Southern France Region) |
25 mi | Also known as Lac du Bourget The jewel of the Rhone-Alps Region, Lake Bourget is France’s largest natural lake by volume and spans almost 11,000 acres. The attributes of Lake Bour… |
Lake Annecy, France (France, Rhone-Alps Region, Southern France, Southern France Region) |
22 mi | Also known as Lac d'Annecy Paragliders sail like bright balloons over the clean mountain water of Lake Annecy, while hikers standing on the massive rock of Roc de Che`re look on… |
Lake Aiguebelette (France, Rhone-Alps Region, Southern France, Southern France Region) |
8 mi | Also known as Lac d'Aiguebelette Nestled in the heart of the Rhone-Alps region of France, Lake Aiguebelette has a well-deserved reputation as a natural treasure. The lake is privately… |