Map visualisation service (WMS) of the dataset: Scope of the plan for the prevention of natural risks of flood — PPRi — of the Allier upstream sector — Nièvre (58)

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 PPR (natural or technological);
— scope of exposure to risks that corresponds to the perimeter regulated by the approved RPP. This approved perimeter is a utility easement (PM1 for PPRNs and PM3 for PPRTs);
scope of study that corresponds to the envelope in which the hazards were studied.

本数据集收录了PPRN在不同发展阶段的边界范围。此类边界的核心特征为：其生成源于官方法定行为，且自明确指定的日期起产生法律效力。具体包含以下三类：
— 收录于PPR（自然类或技术类）规定令中的法定规定边界；
— 与经批准的RPP所规制的边界相对应的风险暴露范围；该经批准的边界属于公用役地，其中PPRN对应PM1，PPRTs对应PM3；
— 对应危险源研究覆盖区域的研究范畴。