Surface issues of the PPRN flooding of the Gers downstream in the department of Gers

Plans for the prevention of natural hazards (PPRN) were established by the Act of 2 February 1995 on strengthening the protection of the environment. They are the key instrument of the State in the field of risk prevention. The objective of this procedure is to monitor development in areas exposed to a major risk. The PPRNs are decided by the prefects and usually carried out by the departmental directorates of the territories (DDT). These plans regulate land use or land use through construction prohibitions or requirements on existing or future buildings (constructive provisions, vulnerability reduction work, restrictions on agricultural use or practices, etc.). These plans may be under development (prescribed), implemented in advance or approved. the mapping of the Issues aims to define and situate, in the risk area, all the elements likely either to be affected by floods or to intervene in the crisis situation that a flood may cause (intervention and rescue services, shelters, etc.). In addition, it is an input into the determination of zoning, which takes into account the nature of the hazard but also the impact of this hazard, and thus the nature and vulnerability of the affected sectors (agricultural areas, activities, etc.).