Nineteen triangular walls with an “indentation” and alternating from one bank to the other over a length of 250 m, a bed lined with rocks facilitating the rise of the river and a total bill of 6 million euros .
“It’s one of the largest fish passages in Île-de-France,” explains Frédéric Da Silva, responsible for the work of the Meaux dam (Seine-et-Marne) at Voies navigables de France (VNF).
“From one project to another, the cost can vary from 2 to 10 million euros.
There, we are therefore at the top of the basket,” adds Guillaume Ribein, the deputy territorial director of VNF, who led the construction.
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The work, imposed by law, must allow migratory fish to go upstream by bypassing an impassable dam on the Marne.
It forms the link between the upstream and downstream sections of the river, which forms a loop around Grande-Île, in the center of Meaux.
The first being navigable and the second non-navigable between Meaux and Chalifert.
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