Dam Guerlédan

The dam Guerlédan is an hydroelectric station located on the communes of Saint Aignan in the Morbihan and of Ripe-of-Brittany in the Coast-with Armor.

Description

Of type Stopping - weight, its construction lasted 7ans of 1923 with 1930. Placed on water of the Blavet, it measures 45m top, 206m length of peak and retains a volume of 55 million m of water on an extent of 400 hectares thus forming the Lac of Guerlédan.

Its setting in water absorbed more than 12 km of the valley of High Blavet During drainings of the lake, one can discover, the such absorbed town of Ys, the old valley, with its lock houses, its towing, its small gardens, its locks and outfalls.

In the beginning, the project envisaged the construction of a flight of locks simultaneously with the stopping in order to maintain the traffic river on the Canal from Nantes to Brest. This initiative forever does not succeed, thus dividing the channel from Nantes to Brest into two sections of navigations: in the West, the branch finistérienne and in the East, the Atlantic Loire branch and morbihannaise In fact, it accelerated the progressive abandonment of the channel already put at evil by the arrival of the Railroad in the center Brittany.

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