Simple download service (Atom) of the dataset: PPRN — RPP Regulated Area Flooding — TOUL (54528)

For natural PPRs, the Environmental Code defines two categories of zones (L562-1): risk-exposed areas and areas that are not directly exposed to risks but where measures can be foreseen to avoid exacerbating the risk.
Depending on the hazard level, each area is subject to an enforceable settlement. The regulations generally distinguish three types of zones:
1- ‘Building prohibited areas’, known as ‘red areas’, where the hazard level is high and the general rule is the prohibition on construction;
2- ‘prescribed areas’, known as ‘blue zones’, where the hazard level is average and the projects are subject to requirements adapted to the type of issue;
3- areas not directly exposed to risks but where constructions, works, developments or farms, agricultural, forestry, craft, commercial or industrial could aggravate risks or cause new ones, subject to prohibitions or requirements (cf. Article L562-1 of the Environmental Code). The latter category applies only to natural RPPs.

针对自然风险预防区域（Natural PPRs），《环境法典》（Environmental Code）通过条款L562-1划定了两类分区：风险暴露区域，以及虽未直接面临风险但可预先采取措施规避风险加剧的区域。
依据危险等级的不同，每一分区均需遵守可强制执行的管控要求。该法规通常将区划分为三类：
1. “禁止建设区”，亦称“红色区域”：该区域危险等级较高，通用规则为全面禁止建设行为；
2. “限制建设区”，亦称“蓝色区域”：该区域危险等级中等，建设项目需适配对应风险类型的管控要求；
3. 虽未直接面临风险，但建筑工程、施工作业、开发项目或农业、林业、手工业、商业及工业经营活动可能加剧既有风险或引发新风险的区域，需遵守相关禁令或管控要求（详见《环境法典》（Environmental Code）条款L562-1）。此类分区仅适用于自然RPPs（Natural RPPs）。