The Communauté d'agglomération du Grand Sénonais (Cags) wishes to use external expertise to enable it to carry out a flood vulnerability diagnosis on its territory. The diagnosis should lead to the identification of priority themes on which vulnerability reduction actions will be carried out. The Communauté d'agglomération du Grand Sénonais is a public institution for inter-municipal cooperation (Epci) with its own tax system. The community has 27 communes spread over the department of Yonne. It has a population of nearly 60,000 inhabitants and its central city is Sens. The community territory is crossed by the river Yonne

diagnosis of the vulnerability of the territory of the Communauté d'agglomération du Grand Sénonais to flooding