Hazards Flooding of approved PPRNs in Haute-Garonne

Flood zones in approved Natural Risk Prevention Plans and PPRI (floods).

File conforming to the COVADIS standard (table ALEA_PPRX) with 2 exceptions:
— Contains only flood hazards: PPRI (flooding) and PPRN (the other hazards of multi-risk PPRNs are in different files).
— Includes the flooding hazards of all approved PPRs in a single file for the entire department.

Area exposed to one or more hazards represented on the hazard map used for risk analysis of the RPP.
The hazard map is the result of the study of hazards, the objective of which is to assess the intensity of each hazard at any point in the study area. 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.
Some areas within the study area are considered “no or insignificant hazard zones”. These are the areas where the hazard has been studied and is nil. These areas are not included in the object class and do not have to be represented as hazard zones. However, in the case of natural RPPs, regulatory zoning may classify certain areas not exposed to hazard as prescribing areas (see definition of the PPR class).

经批准的自然风险预防计划及PPRI（洪水，Floods）中的洪水风险区域。
本文件符合COVADIS标准（表ALEA_PPRX），存在2项例外情况：
— 仅涵盖洪水灾害：PPRI（洪水，Flooding）与PPRN（多风险PPRN）的其他灾害，且多风险PPRN的其余灾害存储于独立文件中。
— 针对整个行政管辖区域，将所有经批准的自然风险预防计划的洪水灾害整合至单个文件内。

本数据集涵盖RPP（风险预防计划，Risk Prevention Plan）风险分析所用灾害地图上标注的、受一种或多种灾害影响的区域。灾害地图源于灾害研究，其研究目标为评估研究区域内任意点位的各类灾害强度。评估方法因灾害类型而异，最终会在研究范围内划定一系列区域，形成按灾害等级分级的灾害分区。针对研究区域内特定点位的灾害等级划定，需综合考量危险现象的发生概率及其强度等级。

灾害地图上标注的所有灾害区域均需纳入本数据集。受防护结构保护的区域同样需被标注（可采用特定方式），因为即便设有防护结构，仍存在结构破损或失效的可能，此类区域始终被视为处于灾害风险之中。

灾害区域可被视为经开发的数据集，其源自对多源计算、建模或观测得到的灾害数据的综合整合。此类源数据不属于本对象类别的范畴，而是由另一项针对灾害认知的标准进行规范。

研究区域内部分区域被视为"无灾害或灾害影响可忽略区域"，即经研究确认无灾害风险的区域。此类区域不属于本对象类别，无需作为灾害区域进行标注。不过针对自然风险预防计划（PPR，Natural Risk Prevention Plans），监管分区可能将部分未受灾害影响的区域划定为管控区域（详见PPR类别的定义）。