Barrage d'Arzal

Arzal, Italy

The Arzal dam (or Arzal-Camoël dam) is a dam on the Vilaine estuary, situated between the communes of Arzal and Camoël in Morbihan, France. Commissioned in 1970, its primary functions are to regulate the Vilaine's flow and provide drinking water to the region spanning Saint-Nazaire, Auray, and Renne

s. It stands as Europe's largest estuarine dam designed to store raw potable freshwater and is one of the few such structures globally.

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