Simple download service (Atom) of the dataset: Restricted area of the PPRN flooding by direct overflow of the Charente river of the commune of Bussac-sur-Charente in 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.

针对自然PPR（natural PPR），《环境法典》（Environmental Code）第L562-1条明确划分了两类区域：风险暴露区，以及虽未直接遭受风险威胁但可采取预判性措施以规避风险加剧的区域。依据危险等级的不同，每类区域均需落实可强制执行的管控要求。相关法规通常将区域分为以下三类：1. 建筑禁止区，又称“红色区域”，该区域危险等级偏高，核心原则为严禁建设活动；2. 指定管控区，又称“蓝色区域”，该区域危险等级为中等，相关工程需遵循适配问题类型的管控要求；3. 虽未直接面临风险，但建设、工程开发、农场（涵盖农业、林业、手工业、商业或工业项目）可能加剧既有风险或引发新风险的区域，需遵守相关禁止性规定或管控要求（参见《环境法典》第L562-1条）。该第三类区域仅适用于自然RPP（natural RPP）场景。