Guerlédan 2015 : Construction of the dam and emptying of the lake
Plot: 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, the largest of the Breton lakes
Robert Kernez