Lac de Coiselet () is a

reservoir A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation. Reservoirs can be created in a number of ways, including contro ...

on the border between the

Ain Ain (, ; frp, En) is a department in the Auvergne-Rhône-Alpes region in Eastern France. Named after the Ain river, it is bordered by the Saône and Rhône rivers. Ain is located on the country's eastern edge, on the Swiss border, where ...

and Jura departments in

France France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...

. Its surface area is 3.8 km². The

lake A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much large ...

formed in 1970 after the Barrage de Coiselet was built at the confluence of the rivers

and

Bienne , french: Biennois(e) , neighboring_municipalities= Brügg, Ipsach, Leubringen/Magglingen (''Evilard/Macolin''), Nidau, Orpund, Orvin, Pieterlen, Port, Safnern, Tüscherz-Alfermée, Vauffelin , twintowns = Iserlohn (Germany) B ...

External links

* Lakes of Ain Reservoirs in France Lakes of Jura (department) {{Ain-geo-stub