Map Viewing Service (WMS) of the dataset: Restricted areas of the plan for the prevention of natural hazards of the municipality of SAVERDUN

The regulated zoning of the Natural Hazard Prevention Plan (PPRN) is digitised in accordance with the national requirements of COVADIS.
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.

自然灾害防治规划（PPRN）的合规区划已依据COVADIS的国家相关要求完成数字化转换。
针对自然类风险防治规划（PPRs），《环境法典》第L562-1条将区划划分为两类：风险暴露区，以及虽未直接面临风险但可采取预判性措施以避免风险加剧的区域。
依据风险等级，每类区划均需遵循可强制执行的管控细则。相关法规通常将区划分为三类：
1. “禁止建设区”（又称“红色区域”）：此类区域风险等级较高，通用规则为禁止一切建设活动；
2. “管控建设区”（又称“蓝色区域”）：此类区域风险等级中等，建设项目需遵循适配具体问题类型的相关要求；
3. 虽未直接面临风险，但开展建筑、工程、开发项目或农业、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的区域，需遵循相关禁止性规定或管控要求（详见《环境法典》第L562-1条）。该类区划仅适用于自然类风险防治规划（RPPs）。