Map Viewing Service (WMS) of the dataset: Regulated area of the PPRN flooding by overflow of the Charente River of the commune of Geay 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.针对自然风险预防区域（Natural PPRs），《环境法典》第L562-1条划定了两类区域：一是风险暴露区域，二是未直接暴露于风险但可采取措施避免风险加剧的区域。 依据危险等级，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. "禁建区"（又称"红色区域"）：该区域危险等级较高，通用规则为禁止建设； 2. "指定管控区"（又称"蓝色区域"）：该区域危险等级为中等，相关工程建设需符合适配问题类型的合规要求； 3. 未直接暴露于风险，但开展建筑、工程、开发活动或农场、农业、林业、手工业、商业、工业类经营活动可能加剧风险或引发新风险的区域，需遵循相关禁令或合规要求（参见《环境法典》第L562-1条）。该类区域仅适用于自然风险预防区域（Natural RPPs）。