monitoring the quality of aquatic environments in the Seine-Normandy basin
hydromorphological and fish monitoring of the rivers of the Territoires Bocages Normands, Seine Aval and Vallées d'Oisehydromorphological and fish monitoring of the rivers of the Territoires Bocages Normands, Seine Aval and Vallées d'Oise
hydromorphological and fish monitoring of watercourses in the Seine Francilienne, Marne and Seine Amont Territorieshydromorphological and fish monitoring of watercourses in the Seine Francilienne, Marne and Seine Amont Territories