Lakes suitable to swim on the territory

Swimming in the wild…
 
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The lake of Kruth-Wildenstein

is an artificial lake in the Vallée de la Thur, just below the Col de Bussang, more precisely in the Vallée de Thann, in the south of Alsace. Swimming is allowed at the risk of the swimmers since there is no supervision. So you have to be careful but the place is really nice.
You can put your towel on the shores of the lake, which has many sandy and grassy beaches. The depth increases rapidly, so be careful with children and beginner swimmers!
You can also walk around the lake (about 6 km or 1h30 walk).

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In Saulxures sur Moselotte: lake of Moselotte

is a nautical base with supervised swimming during the summer holidays and a paid access.
You can access the lake by taking the road to La Bresse and turning left at the entrance to Cornimont.
The lakes of Gérardmer, Xonrupt Longemer, Remiremont, etc… are all places where you can swim in a natural environment.
However, swimming is unsupervised in most cases, and therefore at your own risk.

The lakes of Gérardmer, Xonrupt Longemer, Remiremont,  etc..... are all places where you can swim in a natural environment.

However, in most cases this is done under unsupervised swimming conditions, and therefore at your own risk.