Dataset Direct Download Service (WFS): PPRN — Restricted area of the PSS of the commune of FLIN (54199)

Submersible Surface Planes (PSS) are the first mapping documents regulating land cover in flooding areas for federal watercourses. They were created by the Decree-Law of 30 October 1935 and its implementing decree of 20 October 1937. The Barnier Law of 2 February 1995 gives PSS a risk prevention plan (PPR) status, making them enforceable against third parties. The PSS is a document that establishes a utility easement affecting land use. It allows the administration to oppose any action or work likely to impede the free flow of water or the conservation of flood fields (Article R425-21 of the Urban Code). The filing of a declaration before carrying out works likely to affect the natural flow of water (digues, embankments, depots, fences, plantations, constructions) is therefore necessary. Although having the same legal value, PSS and PPR are technically different. SSPs “merely” map a flood hazard in contrast to PPRs that represent a risk taking into account the vulnerability of the territories (regulatory zoning plan). Finally, the PSS mapped a so-called “average” flood less than the reference flood used as the basis for the development of PPRs (the highest known flood corresponding to the highest known waters (PHEC) and, in the event that it was lower than a centennial flood, the latter). Pursuant to Article L562-6 of the Code de l’Environnement, the PSS are to be PPR pending their repeal by a PPR on the municipalities concerned. 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: 1- ‘Building prohibited areas’, known as ‘red areas’, where the hazard level is high and the general rule is the prohibition on construction; 2- ‘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; 3- areas not directly exposed to risks but where constructions, works, developments or farms, agricultural, forestry, craft, commercial or industrial could aggravate risks or cause new ones, subject to prohibitions or requirements (cf. Article L562-1 of the Environmental Code). The latter category applies only to natural RPPs.淹没地表测绘图（Submersible Surface Planes，简称PSS）是规范联邦水道洪水区土地覆盖的首批官方测绘文件，由1935年10月30日颁布的法令性法律（Decree-Law）及其1937年10月20日出台的配套实施政令制定。 1995年2月2日的《巴尼耶法》（Barnier Law）赋予PSS风险预防计划（risk prevention plan，简称PPR）的法定地位，使其可对第三方强制执行。PSS是一份设立公用役权、影响土地使用的文件，依据《城市法典》第R425-21条，它允许行政主管部门反对任何可能阻碍水体自由流通或保护洪泛区的行为与工程。因此，在开展可能影响水体自然流通的工程（如堤坝、路堤、仓库、围栏、种植作业、建筑工程等）前，必须完成申报备案。 尽管PSS与PPR具有同等法律效力，但二者在技术层面存在显著差异：PSS仅用于划定洪水风险范围，而PPR则是综合考量区域脆弱性的法定区划规划方案。此外，PSS所划定的所谓“平均”洪水水位，低于作为PPR编制基础的参考洪水水位——后者指对应已知最高水位的历史最大洪水（PHEC，the highest known waters），若该历史洪水水位低于百年一遇洪水水位，则以百年一遇洪水作为参考标准。 依据《环境法典》第L562-6条，在相关市镇通过PPR废止现有PSS前，PSS将暂以PPR的形式施行。 针对天然风险预防计划（PPR），《环境法典》将其覆盖区划分为两类（第L562-1条）：直接受风险影响的区域，以及虽未直接暴露于风险但可采取相关措施避免风险加剧的区域。 根据风险等级，每类区域均需遵守可强制执行的管控规则。相关法规通常将区划细分为三类： 1. “禁止建设区”（又称“红色区域”）：该区域风险等级较高，原则上禁止任何建设活动； 2. “限制建设区”（又称“蓝色区域”）：该区域风险等级中等，工程建设需符合适配相关问题类型的管控要求； 3. 虽未直接暴露于风险，但各类建设、工程、开发活动或农、林、手工业、商业、工业场所可能加剧风险或引发新风险的区域，需遵守相关禁令或管控要求（参见《环境法典》第L562-1条）。该第三类区划仅适用于天然PPR。