Map Viewing Service (WMS) of the dataset: AZI du Vaucluse (84) — Limitations of Studies

The risk of flooding is the predominant natural risk in metropolitan France. Almost half of the municipalities are affected to varying degrees by flooding, as the share of communal areas in flooding areas varies. The risk of flooding is the subject of significant prevention efforts that need to be continued. Controlling urbanisation and reducing the vulnerability of populations in flood zones are among the objectives of the Grenelle of the Environment. Reducing the vulnerability of people in flood zones requires protective measures (e.g.: dikes) and prevention (example: flood risk prevention plans), by reducing the number of people exposed (example: control of urbanisation) and awareness of risk (e.g. preventive information). In some areas, not covered by RIPs, flood zone atlases (AZI) have been established. The AZI is a knowledge document that delimits the flood field of a watercourse on the basis of a so-called hydrogeomorphological method (a geographical approach that studies the natural functioning of a watercourse by analysing the structure of the alluvial plain). These atlases are information material with no direct regulatory scope. Nevertheless, as a flood risk knowledge tool, an AZI can support a refusal of building permits.

法国本土范围内，洪涝风险是最主要的自然风险。近半数市镇因自身辖区在洪涝影响区域内的占比各异，遭受着程度不一的洪涝侵扰。洪涝风险始终是多项重要防灾工作的核心议题，相关防灾举措仍需持续推进。管控城市化进程、降低洪涝高风险区域内民众的脆弱性，正是环境格勒奈尔会议（Grenelle of the Environment）的核心目标之一。降低洪涝高风险区域民众的脆弱性，需要通过多重路径实现：一是采取防护措施（例如堤坝），二是开展防灾工作（例如洪涝风险防治规划），具体包括减少受洪涝威胁的人口数量（例如管控城市扩张）以及提升公众的风险认知水平（例如发布预防性风险提示信息）。在部分未被RIPs覆盖的区域，已编制完成洪涝区域图集（AZI）。AZI是一类专业知识文档，其基于所谓的水文地貌学方法，划定某一水道的洪涝影响范围——该方法属于地理学研究路径，通过分析冲积平原的结构，探究水道的自然运行机制。此类图集仅作为参考资料，不具备直接的法律效力。尽管如此，作为洪涝风险认知工具，AZI可作为驳回建筑许可申请的佐证依据。