Couesnon

Couesnon near the mouth

The Couesnon is a French coastal river that runs in the regions Pays de la Loire, Brittany and Lower Normandy.

Geography

It rises in the municipality of Saint- Pierre -des-Landes, drained initially generally in a westerly direction, but then turns to the north and ends after 98 kilometers at Mont -Saint -Michel in the English Channel. Its lower course forms the border between the regions of Normandy and Brittany. On his way he crosses the departments of Mayenne, Ille -et -Vilaine and Manche.

History

The Couesnon was channeled in the 19th century to stem the erosion of the shore. 1969, a dam was built at the mouth. Different construction works and the dam as access to the Mont -Saint -Michel led to silting of the bay of Mont -Saint -Michel. To prevent the Mont -Saint -Michel loses its insular character, the dam should be replaced by a viaduct and the dam be changed.

Places on the river

• Fougères
• Saint -Jean -sur -Couesnon
• Vieux -Vy -sur -Couesnon
• Antrain
• Pontorson
• Mont -Saint -Michel