The Garonne Dordogne watershed is one of the last basins in which all species of highly amphihalin migratory species are still present. The main objective of the program is the restoration of a salmon population, the preservation of other migratory species such as aloses, lampreys and eel. Several areas of work have been developed, including actions to restock salmon from wild spawners caught in the environment, breeding monitoring and general population status. The implementation of concrete actions to restore ecological continuity or to restore spawning grounds contributes to the improvement of habitats essential for their growth and development.