Medium Eure Flood Risk Prevention Plan

Spatial data set contained in the Medium Eure Flood Risk Prevention Plan file

Risk Prevention Plans (RPPs) are the key government instrument for risk prevention. Their objective is to control development in areas at risk.

The development of a risk prevention plan generates a set of spatial data organised into several data sets. The same PPR may include spatial datasets containing:

PPR’s main encompassing perimeters (study perimeter, prescription perimeter, regulated perimeter);

— restricted areas of the plan once approved. RPP regulations generally distinguish between ‘construction ban areas’, so-called ‘red areas’, where the hazard level is high and where the general rule is the construction ban; ‘areas subject to requirements’, known as ‘blue zones’ where the hazard level is medium and projects are subject to requirements adapted to the type of issue and areas not directly exposed to risks but subject to prohibitions or prescriptions;

— hazard areas represented on the map of hazards used for risk analysis by crossing with the stakes, specifying for each zone the level of the hazards to which it is exposed;

issues (persons, assets, activities, cultural or environmental heritage elements) threatened by a hazard and likely to be affected or damaged by it;

— origins of risk, i.e. the entity of the real world which, through its presence, represents a potential risk. This entity may be characterised by a name, a reference to an external object or a geographical object that locates the actual entity causing the risk.

埃夫尔（Eure）中等洪水风险防治计划文件中包含的空间数据集。

风险防治计划（Risk Prevention Plans, RPPs）是政府开展风险防控的核心工具，其目标为管控高风险区域内的开发活动。

编制风险防治计划时会生成一批空间数据，并被划分为多个数据集。同一套风险防治计划可包含以下几类空间数据集：
- 风险防治计划的核心覆盖范围：包括研究范围、法定适用范围、管控边界；
- 计划获批后的限制管控区域：风险防治计划的管控规则通常会区分三类区域：其一为「禁建区」（俗称「红色区域」），此类区域灾害等级较高，默认执行禁建规则；其二为「约束管控区」（俗称「蓝色区域」），此类区域灾害等级为中等，区内项目需根据风险类型适配相应管控要求；此外还有一类区域虽未直接受灾害威胁，但仍需遵守相关禁令或管控规定；
- 灾害风险区域：指在灾害风险地图上标注、用于开展风险分析的区域，需与风险点进行叠加分析，并明确标注各区域所面临的灾害等级；
- 受威胁对象：即受灾害威胁、可能遭受影响或损失的主体，包括人员、资产、生产活动、文化遗产或环境遗产元素等；
- 风险源：即现实世界中因其存在而构成潜在风险的实体。该实体可通过名称、外部对象引用或用于定位实际致险实体的地理对象进行标识。