Saint Guérin, patron saint of herds gave his name to the valley and the dam, which was built between 1957 and 1961. The dam contributes to feeding Lake Roselend through a connecting pipe between the reservoirs that operate in the manner of communicating vessels.
Its water surface is 50 hectares with a depth of 70m and a capacity of 13 million m3. Its arched-gravity structure measures 250m long. The reservoir receives each year the equivalent of twice its storage capacity.
Phone : 04 79 38 33 15
From 06/05 to 22/10, daily.
Office de Tourisme d'Arêches-Beaufort - 27/10/2023
www.areches-beaufort.com
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