Map Viewing Service (WMS) of the dataset: Perimeters of the Natural Risk Prevention Plan (PPRN) Durenque Basin Flood — Tarn

This dataset contains the boundaries at the different stages of the development of the PPRN. The characteristic of these perimeters is to be the consequence of an official act and to produce their effects from a specified date. This is the following: — prescribed scope contained in the prescription order of a PPR (natural or technological); — scope of risk exposure that corresponds to the scope regulated by the approved RPP. This approved perimeter is a utility easement (PM1 for PPRNs and PM3 for PPRTs); — scope of study which corresponds to the envelope in which the hazards were studied.本数据集涵盖了PPRN（PPRN）各开发阶段的边界范围。此类边界的核心特征为：其生成依托官方行政行为，且自指定日期起正式生效。具体如下： — 由PPR（PPR）审批令所载明的规定范围，涵盖天然与技术两类； — 与经审批的RPP（RPP）规制范围相对应的风险暴露范围；该获批边界为公用地役权，其中PPRN对应PM1，PPRT（PPRT）对应PM3； — 与危险研究覆盖范围包络相对应的研究范围。