Simple download service (Atom) of the dataset: PPRN hazard zone flooding by overflow of the Charente River in the commune of Montils en Charente-Maritime

Area exposed to one or more hazards represented on the hazard maps used for risk analysis of the RPP.
Hazard maps are the result of the study of hazards whose objective is to assess the intensity of each hazard at any point in the study area. The evaluation method is specific to each hazard type. It leads to the delimitation of a set of areas on the study perimeter constituting a zoning graduated according to the level of the hazard. The allocation of a hazard level at a given point in the territory takes into account the probability of occurrence of the dangerous phenomenon and its degree of intensity.
For multi-random PPRNs, each zone is usually identified on the hazard maps by a code for each hazard to which it is exposed.

All hazard areas represented on the hazard maps are included. Areas protected by protective structures must be represented (possibly in a specific way) as they are always considered subject to hazard (case of breakage or inadequacy of the structure).
Hazard zones can be described as developed data to the extent that they result from a synthesis using multiple sources of calculated, modelled or observed hazard data. These source data are not concerned by this class of objects but by another standard dealing with the knowledge of hazards.
Some areas within the study area are considered “no or insignificant hazard zones”. These are the areas where the hazard has been studied and is nil. These areas are not included in the object class and do not have to be represented as hazard zones. However, in the case of natural RPPs, regulatory zoning may classify certain areas not exposed to hazard as prescribing areas (see definition of the PPR class).

本对象指用于RPP风险分析的灾害地图（hazard map）上所标注的、受一种或多种灾害影响的区域。
灾害地图源于灾害专项研究，其核心目标为评估研究区域内任意点位的各类灾害强度。针对不同灾害类型需采用专属评估方法，据此可在研究范围内划定若干区域，形成按灾害等级分级的灾害分区。对研究区域内某一特定点位分配灾害等级时，需综合考量该危险现象的发生概率及其强度等级。
针对多随机PPRNs场景，灾害地图上的各分区通常会依据其所暴露的灾害类型，分配专属编码以完成标识。
灾害地图上标注的所有灾害影响区域均需纳入本对象范畴。受防护结构保护的区域也必须予以标注（可采用专属标注方式），因为即便设置了防护结构，仍存在结构破损或防护不足而受灾害影响的可能。
灾害分区可视为经多源数据整合加工而成的数据集，其数据来源涵盖计算、建模或实地观测所得的各类灾害数据。本对象类不涵盖这些源数据，相关源数据的规范应归属另一项针对灾害认知的标准。
研究区域内部分区域被划分为"无灾害或灾害可忽略区域"，即经研究确认无灾害发生风险的区域。此类区域不属于本对象类范畴，亦无需作为灾害分区进行标注。但针对天然RPP场景，监管分区可能将未受灾害影响的区域归类为规定区域（详见PPR类的定义）。