Aménagement du territoire basé sur le risque dans le canton de Vaud: quelques réflexions | Risk-based land-use planning in the canton of Vaud: a few considerations
In land-use planning, taking natural hazards into account cannot be based uniquely on the degree of danger, as shown on natural hazards maps. The level of risk brought in by the different types of human activity in the areas exposed to these hazards must also be taken into consideration. The communes in canton Vaud will soon have completed the realisation of all gravitational natural hazards maps according to catchment area. Consequently, a cantonal and intercommunal strategy for integral risk management must be put in place. The implementation of this strategy requires some prerequisites such as: legislation based on risks, a definition of protection objectives, the organisation of a decision-making process involving all parties concerned, and which will make possible a comprehensive evaluation of land-use related interests. These reflections should result in a change of attitude when faced with the risks linked to natural hazards, and hence land-use adapted to these risks respecting the principles of precaution, equity and proportionality.