Perimeter of the PPRN of the commune Les Portes-en-Ré en Charente-Maritime — Coastal risks, coastal erosion, marine submersion and forest fire.

This dataset contains the boundaries at the different stages of the development of the PPRN. The characteristic of such perimeters is to be the consequence of an official act and to produce their effects from a defined date. This is the following: — prescribed perimeter contained in the prescription order of a (natural) PPR; — scope of exposure to risks that corresponds to the perimeter regulated by the approved RPP. This approved perimeter is a public utility easement (PM1 for PPRNs); — scope of study which corresponds to the envelope in which the hazards were studied.