Map Viewing Service (WMS) of the dataset: PPRN — Restricted area of the PSS of the municipality of GONDREVILLE (54232)

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.淹没地表平面图（Submersible Surface Planes，PSS）是首部针对联邦水道洪泛区土地覆盖进行规制的测绘文件，其制定依据为1935年10月30日政令法及1937年10月20日的实施政令。 1995年2月2日颁布的《巴尼耶法》赋予PSS风险预防计划（Plan de Prévention des Risques，PPR）的法定地位，使其可对第三方产生强制执行效力。PSS是一份设定影响土地使用的公用役权的文件，行政主管部门可据此反对任何可能阻碍水体自由流通或破坏洪泛区的行为与工程（《城市法典》（Urban Code）第R425-21条）。因此，开展任何可能影响水体自然流通的工程（包括堤坝、路堤、贮留区、围栏、种植活动及建筑工程等）前，必须进行申报备案。 尽管PSS与PPR具有同等法律效力，但二者技术层面存在差异。PSS"仅"用于绘制洪灾风险范围，而PPR则结合区域脆弱性划定风险范围（即法定管制分区规划）。此外，PSS划定的是所谓"平均"洪水，其水位低于作为PPR编制依据的参照洪水——该参照洪水为对应已知最高水位（Plus Hautes Eaux Connues，PHEC）的已知最大洪水；若该水位低于百年一遇洪水，则以百年一遇洪水作为参照。 根据《环境法典》（Code de l'Environnement）第L562-6条规定，在相关市镇的PPR取代PSS之前，PSS暂以PPR的形式生效。 针对天然PPR，《环境法典》将相关区域划分为两类（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措施避免风险加剧的区域。 根据风险等级，各区域均需遵守可强制执行的规制要求。法规通常将区域分为三类： 1. "禁止建设区"（又称"红色区域"）：风险等级较高，原则上禁止建设； 2. "管制建设区"（又称"蓝色区域"）：风险等级中等，工程需符合针对具体问题制定的要求； 3. 虽未直接暴露于风险，但任何建设、工程、开发或农林牧渔、手工业、商业、工业活动均可能加剧风险或引发新风险的区域，需遵守相关禁止性规定或要求（参见《环境法典》第L562-1条）。该类区域仅适用于天然PPR。