Lac de Vouglans was created in 1968 by the construction of the Vouglans Dam, which flooded a significant portion of the Ain valley.
The reservoir spans 35 kilometers in length and covers approximately 1,600 hectares.
The submerged landscape includes the remains of the former Chartreuse de Vaucluse monastery, which can sometimes be detected by sonar during low water levels.
The Vouglans Dam is the third-highest dam in France, reaching a height of 130 meters.
The water color is attributed to the mineral composition of the surrounding Jura limestone massifs.
Le Louisiane is a passenger vessel operating scenic cruises on Lac de Vouglans, the third-largest artificial lake in France. Based at the Port du Surchauffant in La Tour-du-Meix, the boat navigates the emerald waters surrounded by the Jura Mountains. The vessel provides access to areas of the reservoir that are otherwise inaccessible by foot. Guests can view the submerged history of the valley and the surrounding limestone cliffs from the water. The cruise focuses on the geographical and historical context of the Ain river damming project. It serves as a primary hub for maritime leisure activities in the Franche-Comté region.
The upper observation deck facing the bow as the boat enters the narrower canyons.
Bring a windbreaker or light jacket even in summer, as temperatures are lower on the water.
Arrive early to secure a seat on the upper deck for unobstructed panoramic views.
Check water levels via local tourist boards if visiting late in the season, as levels can fluctuate significantly.
Do not expect to see the full village remains, as they are permanently submerged under deep water.
Operates seasonally from spring through early autumn; closed during winter months.
