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Nantes–Brest canal

From Wikipedia, the free encyclopedia

Nantes–Brest Canal
CanalNantesBrest-EcluseAbandonnee.jpg
Lock in the disused part of the Nantes–Brest Canal
Specifications
Length385 km (239 mi)
Maximum boat length25.70 m
Maximum boat beam4.65 m
Locks107 (+ 45 in Finistère section) (originally 238)
Total rise555 m (1,821 ft)
StatusOpen except for two breaks; Goariva to La Pitié, Guerlédan Dam to Pontivy
History
Original ownerState in 1811. Canal Company of Brittany in 1822
Date approved1802
Construction began1811 start failed and began again in 1822
Date completed1836
Geography
Start pointBrest, France
End pointNantes
Connects toLoire Maritime Vilaine Blavet

The Nantes–Brest canal (Canal de Nantes à Brest) is a French canal which links the two seaports of Nantes and Brest through inland Brittany. It was built in the early 19th century, and its total length as built was 385 km with 238 locks.

History

Brittany started developing its waterway network in 1538 when it decided to improve navigation on the River Vilaine. The project for a canal throughout the province was conceived by an 'inland navigation commission' convened in 1783. When Brest was blockaded by the English fleet Napoleon decided to build the canal to provide a safe inland link between the two largest military ports of the French Atlantic front.[1] Building started in 1811, and Napoleon III presided over the canal's opening in 1858.[2]

This was the most ambitious canal project ever completed in France, 360km long with 238 locks. The canal was closed as a through route in 1920, when a section was submerged by Guerlédan dam (PK 227), a short distance west of the junction with the canalised river Blavet at Pontivy. The entire length of waterway west of Guerlédan was officially closed in 1957, and the 21km length from Pontivy to Guerlédan also subsequently fell into disuse. At the same time, the disappearance of all commercial traffic (in 26m long barges carrying up to 140 tonnes) resulted in the gradual silting up of the canal section between Rohan and Pontivy.[3]

The canal has been revived and ownership has been transferred from the State to Brittany Region, except for the short length in Pays de la Loire region.

Navigation

Navigation is no longer possible between Pontivy and Goariva. Guerlédan reservoir flooded the canal over a length of 10 km including 17 locks.[3] However, a length of 15 km with 10 locks has been restored upstream of Guerlédan reservoir to the heritage site of La Pitié Chapel, creating a navigation 25 km long, and a public consultation was held in 2017 with a view to lifting the ban on thermal engines on this section.[4]

Three separate navigable sections are thus presented in the route below.

En Route

Canal de Nantes à Brest (East)

Pontivy to Nantes 206 km via 107 locks (using successively the rivers Erdre, Isac, Vilaine and Oust)[3]

Navigation interrupted from Pontivy to Guerlédan dam

Guerlédan–La Pitié section

Finistère or western section

  • PK 81 Goariva
  • PK 73 Port-de-Carhaix, end of canal section, navigation enters canalized river Hyères
  • PK 63 Maison du Canal at confluence of Hyères and Aulne rivers
  • PK 43.5 Châteauneuf-du-Faou
  • PK 0 Châteaulin

Tidal river Aulne and roadstead of port of Brest

See also

References

  1. ^ Association Canaux de Bretagne (2012). "Un peu d'histoire (brief history)".
  2. ^ McKnight, Hugh (2005). Cruising French Waterways, 4th Edition. Sheridan House. ISBN 978-1574092103.
  3. ^ a b c Edwards-May, David (2010). Inland Waterways of France. St Ives, Cambs., UK: Imray. pp. 169–178. ISBN 978-1-846230-14-1.
  4. ^ Association Amis du Canal 22. "Consultation publique sur la navigation de la section Costamoricaine du Canal de Nantes à Brest".

External links

This page was last edited on 23 December 2020, at 00:43
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