Map Viewing Service (WMS) of the dataset: Natural flood risk prevention plan — Tarn Sector Communes — Revision n°1 Bressols — Perimeter — Department of Tarn-et-Garonne

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.

本数据集包含PPRN各发展阶段的边界信息。此类边界范围的核心特征为：均由官方行为确立，且自指定日期起生效。具体如下：
— PPR审批指令中载明的法定适用范围（涵盖自然类与技术类PPR）；
— 与经批准的RPP所规制范围相对应的风险暴露范围；该经核准的边界范围属于公共地役权范畴（PPRN对应PM1，PPRT对应PM3）；
— 对应危险源研究覆盖范围的研究适用范围。