Canal de Nantes à Brest (Ouest) - Guerlédan Lake
The exact dimensions of the largest boat that can travel on the waterway are not known. The maximum headroom is not known. The maximum draught is not known.
Lake Guerlédan is an artificial lake in the centre of Brittany, France. At an elevation of 121 m, its surface area is 4 km². Lake Guerlédan is the largest artificial lake in Brittany. This Lake was created to provide hydro-electric power. Construction took seven years from 1923 to 1930, and encountered many geological, technical and financial difficulties. The creation of the lake and especially that of the dam cut the through the Canal de Nantes a Brest which from this location, followed the course of the river Blavet. Seventeen of the old locks on the canal were submerged in the Lake. Beginning in 1951, the Lake was regularly drained every ten years, revealing a hidden landscape of submerged locks and buildings (http://www.jph-lamotte.fr/files/bb-guerledan-barrage.htm shows the hidden locks). Modern technology has rendered this draining unnecessary.
| Guerlédan Lake Entrance | |||
| Ecluse 136 Le Logeau Submerged lock still visible by markers |
0.41 kilometres | 0 locks | |
| Ecluse 135 Les Granges Submerged lock |
0.68 kilometres | 0 locks | |
| Ecluse 134 Toul Houët Submerged lock |
1.03 kilometres | 0 locks | |
| Ecluse 133 Toul er Lann Submerged lock |
1.62 kilometres | 0 locks | |
| Ecluse 132 Malvran Submerged lock |
1.81 kilometres | 0 locks | |
| Ecluse 131 Sainte Gelven Submerged lock |
2.02 kilometres | 0 locks | |
| Ecluse 130 Zelo Submerged lock |
2.34 kilometres | 0 locks | |
| Ecluse 129 Cuilleret Submerged lock |
2.52 kilometres | 0 locks | |
| Ecluse 128 Cosquet Submerged lock |
2.85 kilometres | 0 locks | |
| Ecluse 127 Tregnanton Submerged lock |
3.35 kilometres | 0 locks | |
| Ecluse 126 Kermadec Submerged lock |
3.69 kilometres | 0 locks | |
| Ecluse 125 Baraval Submerged lock |
4.70 kilometres | 0 locks | |
| Ecluse 124 Pouldu Submerged lock |
5.80 kilometres | 0 locks | |
| Ecluse 123 Kergoff Submerged lock |
6.96 kilometres | 0 locks | |
| Ecluse 122 Caurel Submerged lock |
8.78 kilometres | 0 locks | |
| Ecluse 121 Castel Finance Submerged lock |
9.50 kilometres | 0 locks | |
| Ecluse 120 Moulin Neuf Submerged lock |
10.79 kilometres | 0 locks | |
| Barrage de Guerlédan This is a dam and a "dead end", there is no connection between the Guerlédan Lake and the Canal de Nantes à Brest (Est). |
10.85 kilometres | 0 locks |
- VisuRiS — associated with Waterways of Mainland Europe
- The official inland waterway resource for Belgium with actual traffic and planned operations on the waterways. Also has voyage planning and notices to mariners
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