Regulatory zoning of the Flood Risk Prevention Plan (PPRI) in the commune of La Londe les Maures (Var)

The Risk Prevention Plans (P.P.R) codified in Articles L562-1 to L562-7 and R562-1 et seq. of the Environmental Code, relating to the prevention of foreseeable natural hazards, the implementation of which is governed by Decree No 95-1089 of 5 October 1995, constitute one of the tools for the implementation of the State policy on flood prevention, which was redefined in the Interministerial Committee of 24 January 1994. This legislative and regulatory framework was supplemented by the Act of 30 July 2003. The Plan for the Prevention of Natural Flood Risks in the commune of La Londe les Maures, linked to the presence of the rivers of the pansard and the Maravenne, was approved by prefectural decree of 30 December 2005. A regulation shall apply referring to prohibition and/or prescription measures depending on the different mapped areas. A hydraulic study was carried out in 1993, evaluated and updated in 1997. This study served as the basis for the definition of hazard. As a result, a paper-based mapping was provided. This hazard allowed, following the application of a constructibility grid, to determine a digitalised regulatory zoning that was reported on a background IGN1998©EDR 25. A separate mapinfo table existed for each type of zoning: R1, R2, B1 and B2. These 4 tables were then merged to create a single table.