Guerlédan 2015 : La construction du barrage et la vidange du lac

The construction of the Guerlédan dam lasted seven years (from 1923 to 1930). Placed on the waters of Blavet, it is 45 meters high and retains a volume of 55 million m3 of water over an area of ​​400 hectares, thus forming the lake of Guerlédan,...