Simple download service (Atom) of the dataset: Regulated area of the PPRN flooding by overflow of the Charente River in the commune of Saintes en Charente-Maritime

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.

对于自然PPR（natural PPRs），《环境法典》第L562-1条将区域划分为两类：风险暴露区域，以及虽未直接暴露于风险但可采取措施避免加剧风险的区域。
根据危险等级的不同，每类区域均需遵循可强制执行的管控要求。相关法规通常将区域划分为三类：
1. 建筑禁止区（Building prohibited areas），又称红色区域（red areas）：该区域危险等级较高，通用准则为禁止建设活动；
2. 指定管控区（prescribed areas），又称蓝色区域（blue zones）：该区域危险等级中等，建设项目需遵循适配问题类型的相关要求；
3. 非直接风险暴露区域：若在此类区域开展建筑、工程、开发活动，或从事农业、林业、手工业、商业、工业类经营活动，可能加剧既有风险或引发新风险，需遵循相关禁令或管控要求（参见《环境法典》第L562-1条）。
上述第三类区域仅适用于自然RPP（natural RPPs）。