Mathieu Argaud, Director of Bipolar, looks back at the work carried out with M28 since the bid phase and the territorial fiction designed by the agency around the Lez catchment area. He describes Bipolar’s new project: to create a sensitive atlas of the Mosson, a river that flows through thirteen communes in the Montpellier metropolitan area. The relationships between the river, its inhabitants and the various players involved in its management will be observed and depicted.