Non-structural vulnerability and territorial resilience in a multi-risk context. Perception and cartographic preferences of karst collapse and flooding hazards (val d’Orléans, Loiret, France)
The Flood Risk Prevention Plan (PPRi), as a central element of the national flood risk management, is based on a single-hazard logic. However, the valley of Orléans is affected by the interaction between two major natural hazards namely flood and karst collapse. The PPRi requires the related local authorities (town councils) to develop a municipal information document on major existing risks (DICRIM). A brief analysis of these communication mechanisms clearly highlights a lack in policies for the prevention of karst cavity collapse, which limits the development of a risk culture and can exacerbate the likely potential damages and posing a greater threat to human lives. By the use of questionnaire surveys, the aim of the present paper is to assess the awareness of the karst risk on a municipal level and the main stakeholders of the valley of Orléans (Prefecture, DDT, DREAL). This research focuses on non-structural preventive measures in terms of institutional communication pertaining to a multi-risk situation aimed at the major stakeholders with the prospect of enhancing the resilience of the territories.