Simple download service (Atom) of the dataset: Regulatory zoning of the Flood Risk Prevention Plan (PPRI) in the municipality of Le Thoronet (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 the natural risks of flooding linked to the presence of Argens downstream of its confluence with Vallon des Miquelets and Gasquette in the commune of Vidauban was prescribed on 7 February 2013.
The Plan for the Prevention of Natural Flood Risks in the commune of Thoronet was approved by prefectural decree of 11 April 2014.
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.

《环境法典》第L.562-1条至L.562-7条、第R.562-1条及后续条款所编纂的风险预防计划（Risk Prevention Plans，P.P.R），旨在防范可预见的自然灾害风险，其实施由1995年10月5日第95-1089号政令规范，是落实1994年1月24日部际委员会重新界定的国家防洪政策的工具之一。
该立法与监管框架于2003年7月30日通过法案得到补充完善。
2010年6月15日，阿尔让斯流域遭遇极端风暴事件，造成严重损失。
2013年2月7日，针对阿尔让斯河与瓦隆德米克莱河、加斯凯河汇流下游段所在的维多邦市镇范围内的洪涝自然风险，出台了相应的风险预防计划。
2014年4月11日，省长令批准了托罗内市镇的自然洪涝风险预防计划。
根据灾害风险等级，各区域需执行可强制执行的建设管控要求。该监管规则区分了以下几类区域：
——红色区域：包含子区域的禁止建设区；
——蓝色区域：包含子区域的管控建设区；
——低水文区域：该区域的风险暴露等级未在RPRI中明确标注；
——极端灾害风险区域。
监管区划是灾害风险与城镇发展诉求叠加耦合的结果。
灾害风险图（即水深/流速叠加图）由激光雷达（Light Detection and Ranging，Lidar）建模工作室基于Scan25©IGN2011数据制作完成。本次监管区划延期工作中，以地籍数据为基础对相关地块进行了调整。
此外，该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（流量区域提取工具，Extraction of Flow Zones）提取的面积大于1平方千米的区域叠加生成；
——极端灾害风险区域：对应千年一遇的灾害风险。