For almost twenty years, the MIGADO Association has been responsible for the construction and construction of most of the operations related to amphihalin migratory fish in the Dordogne basin.The main objective of the program is the restoration of a salmon population, the preservation of certain species, such as aloses, lampreys and eel, while working and contributing to the restoration of ecological continuity. These actions are carried out through restocking of salmon, monitoring of the reproductions and population of the various species and the concrete implementation of actions to restore ecological continuity.