The project aims to increase the level of protection of works to better protect the issues (populations, jobs and economic activities, ...) and reduce the vulnerability of the territory. The aim is to develop and consolidate prevention tools (containment systems) against flood risk, intensified by the climate change context. The studies carried out, MOE phases AVP / PRO and related studies (ACB / AMC, topography, geotechnical, inventories Fauna / Flora) will make it possible to precisely evaluate the work to be carried out to increase the level of protection of the three future containment systems of Ancy-Dornot / diversion of Ars-sur Moselle, Ban Saint Martin and the new port of Metz.