Update of the Protection against floods (hydrological study, hydraulic study) carried out in 1993 by the ministère de l’équipement .
Urbanization has since invaded the watersheds, reducing available land and increasing impervious surfaces.
The alignment and dimensions proposed by the 1993 study are to be verified on the basis of the new field data and particularly the most recent urban development plan. Total area of the basin: 20.50 km2