Flood Risk Prevention Plan "Val d'Ardoux"

All zoning and written documents of the PPRI approved on " 22/10/1999 ".
Risk prevention plans (RPPs) are the government's key instrument for risk prevention. Their objective is to control development in areas at risk. The development of a risk prevention plan generates a spatial dataset organized into several datasets. The same PPR may include spatial datasets containing:
- main perimeters encompassing the RPP (study perimeters, prescription perimeters, regulated perimeters);
- restricted areas of the plan once approved. RPP regulations generally distinguish between ‘no-build zones’, known as ‘red zones’, where the hazard level is high and the general rule is no-build zones; ‘prescribed zones’, 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 requirements;
- hazard zones represented on the hazard map used for risk analysis by crossing with the stakes, specifying for each zone the level of hazards to which it is exposed;
- issues (people, property, 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 real-world entity which, by its presence, represents a potential risk. This entity may be characterised by a name, a reference to an external object or a geographical object locating the actual entity causing the risk.

于1999年10月22日获批的PPRI全部区划文件与书面材料。
风险预防计划（Risk Prevention Plans，缩写RPPs）是政府开展风险预防工作的核心工具，其核心目标为管控风险区域内的开发建设行为。风险预防计划的编制会生成一套空间数据集，该数据集可细分为多个子数据集。单份PPR所包含的空间数据集可涵盖以下类型：
- 覆盖该RPP（Risk Prevention Plan）的核心边界（包括研究边界、管控边界、法定监管边界）；
- 计划获批后的管控区域：RPP的管控规则通常会区分两类核心管控区域：一是“禁建区”（又称“红区”），此类区域灾害风险等级较高，原则上禁止任何建设活动；二是“指定管控区”（又称“蓝区”），此类区域灾害风险等级为中等，建设项目需满足适配具体风险类型的管控要求；此外，未直接面临灾害威胁但仍需遵守禁令或管控要求的区域也纳入该类管控范畴；
- 灾害风险分区：基于通过与承灾体图层叠加开展风险分析所用的灾害风险图划定的分区，各分区均明确标注其所承受的灾害风险等级；
- 受灾害威胁、可能遭受影响或破坏的承灾对象：涵盖人口、资产、生产活动、文化或环境遗产要素等；
- 风险源：即因自身存在而构成潜在风险的现实实体。该实体可通过名称、外部对象引用或用于定位实际致灾实体的地理对象进行标识。