Map Viewing Service (WMS) of the dataset: PHE point grid — PPRI in the Cavu catchment area — municipalities of Zonza, Lecci and Conca

In the area exposed to one or more hazards represented on the map of hazards used for the risk analysis of the PPRI of the Cavu, Ficaja and Maresciale watersheds, a grid of points makes it possible to know at each point the NGF coast of the highest waters for the reference flood.
The hazard map (associated point grid) is the result of the flood risk study conducted by SUEZ-SAFEGE in May 2021, which allowed the revision of the PPRI of the Cavu watershed approved on 15/05/2001. This revision incorporates the main tributary of Cavu: the Casavecchia and the watersheds of the Maresciale and Ficaja rivers.
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.
All hazard areas shown on the hazard map 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.

在用于卡武（Cavu）、菲卡贾（Ficaja）和马雷西亚勒（Maresciale）流域防洪风险预防规划（PPRI）风险分析的灾害地图所标注的一处或多处灾害影响区域内，点网格可用于获取每个点位上以国家大地测量基准框架（NGF）为基准的参考洪水最高水位。
本灾害地图（配套点位网格）由苏伊士-萨夫吉（SUEZ-SAFEGE）于2021年5月开展的洪水风险研究成果编制完成，该研究完成了对2001年5月15日获批的卡武流域防洪风险预防规划（PPRI）的修订。本次修订纳入了卡武河主要支流卡萨韦基亚（Casavecchia）河以及马雷西亚勒河、菲卡贾河流域。
评估方法针对每种灾害类型量身定制，通过对研究范围内的区域进行划定，形成按灾害等级分级的区划。在给定的国土点位上分配灾害等级时，需综合考虑危险现象的发生概率及其强度等级。
本灾害地图中标注的所有灾害区域均已纳入覆盖范围。受防护结构保护的区域也必须（可通过特定方式）予以标注，因为此类区域始终存在受灾害影响的风险（例如防护结构发生破损或失效的情况）。
灾害区域可被视为经开发的数据集，其来源于对多源计算、建模或实测灾害数据的综合整合。此类源数据不属于本类对象的范畴，而是由另一项专门研究灾害认知的标准所涵盖。