One year after the Xynthia storm surge, which struck the Vendée and the Charente-Maritime counties of the French Atlantic Coast in the night of 27/28 February 2010, French authorities implemented a national plan for mitigation and management of the flash submersions (MEDDTL 2011). In this paper authors analyse partial results of this plan after almost three years of its effectiveness in the perspective of Xynthia catastrophic event, but also taking into account other dramatic coastal submersions, which occured during winter 2014 in the same region.