Map Viewing Service (WMS) of the dataset: Regulatory zoning of the Marne River Flood Risk Prevention Plan — Épernay Sector — CAECPC

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 level of hazard and the issues, each area is subject to an enforceable regulation that sets out, in a clear and operational manner, the regulatory measures that apply to each of the restricted areas. The Regulation generally distinguishes five types of zones: 1. “Building prohibited areas”, referred to as “red zone”, depending on the level of hazard in an area with little or no construction, or in an agricultural or natural area, then the general rule is the prohibition on construction; 2. “areas subject to requirements”, referred to as “magenta zone”, “medium blue zone” or “light blue zone”, depending on the level of hazard in an urbanised area, then the projects are subject to requirements adapted to the type of issue; 3. “white areas” not defined in the Regulation and for which the RPIP does not apply, as they are not subject to hazard. The identification of these homogeneous areas results in the development of a mapping of the regulatory zoning of the PPRi. The hazard, the stakes, which made it possible to construct this regulatory Zonage, as well as the reference ratings are located under the no. gaspar 51DDT20170001 Spatial resolution: 1/10 000 Genealogy: The boundaries of a restricted area are shown on the graphical documents of the RPP. Regulatory limits are generally set on natural phenomena, which do not follow cadastral or administrative boundaries. A RPP determines the boundaries of the different restricted areas based on the calculated right-of-way of the site’s hazardous events. Some RPPs may sometimes contain regulations associated with linear or point configurations (cavitates, runoff axis, etc.). Linear and point graphic primitives are to be used in these cases respectively.针对自然风险规划区域（PPR），《环境法典》（Environmental Code）第L562-1条划定了两类区域：风险暴露区，以及虽未直接面临风险但可预先采取措施规避风险加剧的区域。 根据危害等级与相关问题类型，每类区域均需遵循一项可强制执行的法规，该法规以清晰且可落地的方式明确了适用于各受限区域的监管措施。该法规通常将区域划分为五类： 1. **禁止建设区**（又称"红区"）：针对建设活动极少或无建设的区域，或农业、自然区域，依据其危害等级，通用规则为禁止任何建设行为； 2. **受约束区域**（又称"品红区""中蓝区"或"浅蓝区"）：针对已城市化的区域，依据其危害等级，所有建设项目需遵循适配问题类型的合规要求； 3. **白色区域**：法规未予定义且不适用风险与宜居性规划指令（RPIP）的区域，因该类区域不受任何危害影响。 对上述均质区域的识别工作，将形成自然风险规划区域（PPRi）的监管分区制图成果。 支撑该监管分区编制的危害等级、相关风险权重以及参考评级，均可通过档案编号gaspar 51DDT20170001查询获取。 空间分辨率：1/10000 数据集溯源： 受限区域的边界会标注在风险规划区域（RPP）的图形文档中。监管边界通常基于自然现象划定，并不遵循地籍或行政边界。风险规划区域（RPP）会根据场地危险事件的法定通行权计算结果，划定各受限区域的边界。部分风险规划区域（RPP）可能附带与线性或点型配置相关的监管要求（如空腔、径流轴线等），此时需分别使用线性与点型图形基元进行标注。