The restoration of ecological continuity is a major challenge in Gironde, given its situation downstream of the Adour-Garonne basin and the large number of priority works in this area. In view of the scale of the work to be carried out, FDAAPPMA33 took over the project to carry out an animation mission on ecological continuity, and then to carry out a departmental study aimed at bringing about 30 projects to the standards of ecological continuity. Finally, in order to assess the effectiveness of the proposed work, the Federation carries out a pilot follow-up before restoration of ecological continuity on the Saucats River. This is a follow-up that does not exist in Gironde and remains rare in Adour-Garonne.