Map Viewing Service (WMS) of the dataset: Specific issues of the PPRN flooding by overflow of the Charente river of the commune of Crazannes in Charente-Maritime

Generally speaking, the stakes are people, property, activities, cultural or environmental heritage elements, threatened by a hazard and likely to be affected or damaged by it. The sensitivity of an issue to a hazard is called “vulnerability”.
This object class brings together all the issues that have been addressed in the RPP study. An issue is a dated object whose consideration depends on the purpose of the RPP and its vulnerability to the hazards studied. A PPR issue can therefore be considered (or not) depending on the type or types of hazard being addressed.
These elements form the basis of knowledge of the land cover necessary for the development of the RPP, in or near the study area, at the time of the analysis of the issues.

The data on issues represent a (figible and non-exhaustive) photograph of assets and individuals exposed to hazards at the time of the development of the risk prevention plan. This data is not updated after approval of the RPP. In practice they are no longer used: the issues are recalculated as necessary with up-to-date data sources.

一般而言，风险受体指受危险威胁并可能因此遭受影响或损害的人员、财产、生产活动、文化或环境遗产要素。某一对象对危险的敏感程度被称为"脆弱性（vulnerability）"。
本对象类涵盖了风险预防计划（Risk Prevention Plan，RPP）研究中涉及的全部研究对象。所谓"研究对象"，是指具有明确时间节点的对象，其是否被纳入考量取决于风险预防计划的目标，以及其针对所研究危险的脆弱性。因此，是否纳入某一PPR研究对象，需视所针对的危险类型而定。
在开展研究对象分析时，上述要素构成了在研究区域及其周边区域制定风险预防计划所需的土地覆盖相关知识基础。
风险预防计划制定阶段，相关研究对象的数据呈现为一份（figible且非详尽）的受危险威胁的资产与人员快照。该数据在风险预防计划获批后不会进行更新。实际应用中此类数据已不再使用：研究对象会根据需要通过最新数据源重新计算得出。