The Potentialities of a Risk Disaggregation Between Vulnerability and Hazard: Example of the Relative Stability Induced for Flooding Risk Alleviation

It is assumed here that the land use planning practice is mainly an action of negotiation between land private owners and/or land public authorities. The ultimate target is to improve the localization of the land uses, taking in account the natural hazards, so as to be able to alleviate the risks. An intermediate target is to improve the civil and hydraulic structures and the water bodies maintenances undertaken. Alleviate means not only a global reduction of damages, but also a progress in social equity toward the residual risks. These lasts remain always present, even when an actual application of strong land planning measures, and/or of protection structures, is undertaken and respected.