Chabeuil: a unique experiment on the bed of the Véore

The river will see new developments to promote the development of biodiversity and create secondary channels to the main bed.

These days, agents from Valence Romans agglo will carry out development work on several portions of the Véore located between the bookstore and the Ici & là Véore restaurant. The goal ? Diversify the flow conditions and facies of the Véore in order to increase habitats favorable to aquatic and underwater fauna. Today, the river bed is very homogeneous and simplified and therefore not conducive to the installation and development of species found in a watercourse and its annexes which function properly.

Developments inspired by beavers

The objective is therefore to make the environment more complex by proposing variations in flow speeds, heights and widths of the water blade, by creating secondary channels to the main bed and by finding a low flow bed (occupied bed by water during low water periods) more sinuous and heterogeneous. Concretely, the Agglo river team will build structures mimicking the structures of beavers in the bed of the Véore. Their location will produce the best effects. The technique inspired by the action of rodents is gentle, inexpensive and reversible. “This project has already been tested on the Lierne river and is showing positive results. These speed bumps will not be dams but they will slow down the water so that it infiltrates into the ground”, underlines the mayor, Alban Pano. These arrangements will be made using wood and branches collected on site. Note that this technique, proven for around ten years in the United States, is therefore for the first time tested in France in Chabeuil. This site will become a showcase and a place of experimentation for all watercourse managers in the Region, the departmental territorial management and the French biodiversity office.


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