Dataset Direct Download Service (WFS): Regulated area of the PPR flooding of the Gers downstream in the department of Gers

They are the key instrument of the State in the field of risk prevention. The objective of this procedure is to monitor development in areas exposed to a major risk.
The PPRNs are decided by the prefects and usually carried out by the departmental directorates of the territories (DDT). These plans regulate land use or land use through construction prohibitions or requirements on existing or future buildings (constructive provisions, vulnerability reduction work, restrictions on agricultural use or practices, etc.).
These plans may be under development (prescribed), implemented in advance or approved.
For natural PPRs, the Environmental Code defines two categories of zones (L562-1): risk-exposed areas and areas that are not directly exposed to risks but where measures can be foreseen to avoid exacerbating the risk.
Depending on the hazard level, each area is subject to an enforceable settlement.
The regulations generally distinguish three types of zones:
• ‘Building prohibited areas’, known as ‘red areas’, where the hazard level is high and the general rule is the prohibition on construction;
• ‘prescribed areas’, known as ‘blue zones’, where the hazard level is average and the projects are subject to requirements adapted to the type of issue;
• areas not directly exposed to risks but in which constructions, works, developments or holdings of agricultural, forestry, crafts, commercial or industrial holdings could aggravate risks or cause them again, subject to prohibitions or requirements (cf. Article L562-1 of the Environmental Code)

它们是国家在风险预防领域的核心工具。本程序的目标是对面临重大风险的区域的发展态势开展监测。
风险预防计划（PPRNs）由省长审批制定，通常由各省领土事务局（DDT）负责推进实施。此类计划通过对现有或拟建建筑设置建设禁令或相关要求（包括建设规范、减灾工程、农业使用限制或农业活动限制等），对土地利用行为进行规制。
此类计划可处于制定阶段（待颁布）、先期实施或已获批状态。
针对自然风险预防计划（PPRs），《环境法典》将区域划分为两类（条款L562-1）：直接面临风险的区域，以及虽未直接暴露于风险，但可采取相关措施以避免风险加剧的区域。
根据灾害等级，每个区域需遵守可强制执行的开发建设规制。
相关规制通常将区域划分为三类：
• 被称为‘红色区域’的‘禁止建设区’：此类区域灾害等级较高，原则上禁止任何建设活动；
• 被称为‘蓝色区域’的‘规划建设区’：此类区域灾害等级中等，建设项目需遵循适配问题类型的相关要求；
• 虽未直接暴露于风险，但相关建设、工程、开发活动或农业、林业、手工业、商业或工业经营活动可能加剧风险或引发风险复发的区域，需遵守相关禁令或要求（详见《环境法典》条款L562-1）