Résumé
The MEZAP technical guide, known as the "Rockfall Hazard Mapping Method," is designed for state agencies responsible for conducting rock hazard assessments in the context of creating Public Awareness Campaigns (PAC) or Natural Risk Prevention Plans (PPRn). It is also relevant for operators such as design firms and public organizations involved in these assessments. In certain cases, local authorities may find it useful for issuing hazard maps of this kind. The document represents the result of collective deliberations initiated in 2014. These discussions were carried out within a working group that brought together state agencies (INRAe, BRGM, Cerema, G. Eiffel University, ONF-RTM) and representatives from decentralized state services, all under the auspices of the Ministry of Ecological Transition. MEZAP is a response to the state's objective of maintaining a proportional approach to meeting expectations and allocating resources for mapping rock hazards within PPRn or PAC frameworks. It is built on a shared foundation for characterizing rock hazards and a common terminology. MEZAP offers a practical approach to rock hazard mapping, encompassing a wide spectrum of phenomena, from isolated stones to large-scale events, ensuring consistency in production across different territories.