Dataset Direct Download Service (WFS): Regulatory zoning of the Flood Risk Prevention Plan (PPRI) in the commune of Roquebrune sur Argens (Var)

The Risk Prevention Plans (P.P.R) codified in Articles L 562-1 to L 562-7 and R 562-1 et seq. of the Environmental Code, relating to the prevention of foreseeable natural hazards, the implementation of which is governed by Decree No 95-1089 of 5 October 1995, constitute one of the tools for the implementation of the State policy on flood prevention, which was redefined in the Interministerial Committee of 24 January 1994.
This legislative and regulatory framework was supplemented by the Act of 30 July 2003.
The Argens Basin suffered an exceptional storm event on June 15, 2010, causing serious damage.
A plan to prevent natural flood risks related to the presence of Argens, Blavet and Fournel in the commune of Roquebrune sur Argens was prescribed on 8 September 2010.
The Plan for the Prevention of Natural Flood Risks in the commune Roquebrune sur Argens was approved by prefectural decree of 20 December 2013.
Depending on the hazard level, each area is subject to an enforceable settlement. The Regulation distinguishes different types of zones:
— ‘red zones’, prohibition zones including sub-areas;
— “blue zones”, areas subject to prescription including sub-areas;
— low hydrographic areas where the level of exposure to risks is not specified in the RPRI;
— areas of exceptional hazard.

Regulatory zoning stems from the intersection of the hazard with urban issues.
The hazard map (=height/speed crossing) was carried out by a Lidar modeling office, carried out on a Scan25©IGN2011. Adjustments were made to the parcel as part of the deferral of the regulatory zoning on a cadastral background.

In addition, the regulatory map shows:

— the low hydrographic areas which are the result of the Atlas of Inundatable Zones crossed with Exzeco (Extraction of Flow Zones) > 1 km²;

— the exceptional hazard areas corresponding to a millennial hazard.

本数据集涉及法国环境法典第L 562-1条至L 562-7条、第R 562-1条及后续条款所规定的风险预防计划（Risk Prevention Plans, P.P.R），该类计划旨在预防可预见的自然灾害，其实施由1995年10月5日第95-1089号法令规范，是1994年1月24日部际委员会重新界定的国家防洪政策的实施工具之一。该立法与监管框架于2003年7月30日通过法案得到补充。

阿尔让斯流域（Argens Basin）于2010年6月15日遭遇极端风暴事件，造成严重破坏。2010年9月8日，针对罗克布吕讷-阿尔让斯（Roquebrune sur Argens）市镇内与阿尔让斯河、布拉韦河（Blavet）及富尔内尔河（Fournel）相关的自然洪水风险预防计划正式颁布。该罗克布吕讷-阿尔让斯自然洪水风险预防计划于2013年12月20日经省长令批准。

根据灾害风险等级，各区域均需遵守可强制执行的开发管控要求。本监管条例区分了以下几类区域：
— “红区”：包含子区域的禁止开发区域；
— “蓝区”：包含子区域的管控开发区域；
— 低水文区域：其风险暴露等级未在洪水风险预防计划（Risk Prevention Plans for Floods, RPRI）中明确；
— 极端危险区域。

监管分区基于灾害风险与城市开发问题的叠加分析划定。灾害风险图（即水位-流速叠加图）由激光雷达（Lidar）建模机构基于Scan25©IGN2011数据集制作完成。针对地籍底图上的监管分区延期工作，已对相关地块进行了调整。

此外，监管地图还标注了以下内容：
— 低水文区域：由可淹没区域图集与Exzeco（径流区提取）数据叠加生成且面积大于1平方千米的区域；
— 极端危险区域：对应千年一遇的灾害风险。