Map Viewing Service (WMS) of the dataset: Regulated zone of the PPRN flooding by overflow of the median sector the Boutonne in the commune of St-Julien-de-l’Escap 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.针对天然风险防范规划区域（natural PPRs），《环境法典》第L562-1条将其覆盖的区域划分为两类：风险暴露区域，以及虽未直接面临风险但可通过预先采取措施避免风险加剧的区域。依据危险等级的差异，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进一步划分为三类：1. “禁止建设区域”（俗称“红色区域”）：此类区域危险等级较高，基本原则为禁止一切建设活动；2. “特定管控区域”（俗称“蓝色区域”）：此类区域危险等级中等，建设项目需适配对应问题类型的管控要求；3. 虽未直接面临风险，但各类建设、工程、开发活动或农场（涵盖农业、林业、手工业、商业及工业相关业态）可能加剧既有风险或引发新风险的区域，需遵守相应的禁止规定或管控要求（参见《环境法典》第L562-1条）。该类别的适用范围仅限定于天然RPPs（natural RPPs）。