Marne River

EuroCanals Guide: Waterways of France
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Looking east to the St Maurice lock and footbridge

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Much of the Marne is a twisting path, accentuated just before it merges with the Seine by a large boucle, almost a full-circle loop of fifteen kilometers along the natural riverbed that is short-cut for through traffic by a manmade basin and tunnel of less than one kilometer. There is a proposal to install a small lock at the Joinville dam, which would allow pleasure-boat traffic to complete the boucle of the Marne and rejoin the river above the tunnel. The project is opposed by the mayor of the city of St Maur-des-Fossés, a suburban city completely surrounded by the 15-km loop of the river.