Surface issue of the natural flood risk prevention plan for the area between Nevers and Saint Léger-des-Vignes — Nièvre (58)

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，受险对象包括受灾害威胁并可能因此受到影响或损毁的人员、财产、各类活动以及文化或环境遗产要素。某一事项针对灾害的敏感程度被定义为“脆弱性（vulnerability）”。 该对象类别涵盖了风险预防计划（Risk Prevention Plan，缩写RPP）研究中所涉及的全部评估事项。评估事项是带有时间标记的对象，其是否被纳入考量取决于风险预防计划的目标以及该事项对所研究灾害的脆弱性。因此，某一RPP事项是否被纳入考量，取决于当前所应对的灾害类型。 在开展评估事项分析时，上述要素构成了研究区域及其周边区域内风险预防计划开发所需的土地覆被（land cover）认知基础。 评估事项相关数据呈现的是风险预防计划开发阶段，受灾害影响的资产与个体的（有限且非穷尽的）快照式记录。该数据在风险预防计划获批后不再更新。实际应用中此类数据已不再被直接使用：评估事项会根据需要使用最新数据源重新计算生成。