Restricted zones of the YZERON Flood Risk Prevention Plan (PPRN) — Rhône

For natural PPRs, the code of l'environment defines two categories of zones (L562-1): risk-exposed areas and areas that are not directly exposed to risks but where measures may be planned to avoid d’#x27; exacerbate the risk. Depending on the level of d'aira, each zone is the subject of an opposable regulation. Regulations generally distinguish three types of zones: • “zones d' prohibition to build”, so-called “red zones”, when the level of #x27; hazard is strong and the general rule is #x27; prohibition to build; • ‘prescription areas’, known as ‘blue zones’, where the level of hazard is average and projects are subject to requirements adapted to the type of #x27; issue; • areas not directly exposed to risks but where constructions, structures, development or agricultural, forestry, artisanal, commercial or industrial operations could aggravate or cause new risks, subject to prohibitions or requirements (cf. Article L562-1 of the Code of the Environment). The latter category is only applicable to natural PPRs. For PPRTs, the code of the environment (L515-15 et seq.) defines the same zoning principle for risk-exposed areas. The instructions in the guide d' PPRT development add a gradation to the “red zones” and “blue zones”. Includes all zones represented on the zoning plane in which a regulation or prescription applies. Areas studied (within prescribed perimeter) where the hazard is non-existent or presumed to be zero, and which are not regulated by the PPR are excluded from this class of objects. __Origin__ The boundaries of a restricted zone are represented on the graphical documents of the PPR. Regulatory limits are generally set on natural phenomena, which do not follow cadastral or administrative boundaries. A PPRT determines the boundaries of the different restricted zones according to the calculated right-of-way of the site’s hazardous phenomena. Some PPRs may sometimes contain regulations associated with linear or punctual figures (cavities, runoff axis...). The linear and point graphics primitives are to be used in these cases respectively. __Partner organisations__ DDT Rhône __Links annexes__ * [basketDownloadFrontalParametrage](https://catalogue.datara.gouv.fr/geosource/panierDownloadFrontalParametrage?LAYERIDTS=6651) * [direct download of data](https://catalogue.datara.gouv.fr/rss/atomfeed/atomdataset/dafa4d40-f152-41d3-98e2-27ca4ea415fa) [See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/2ea1f0c56a84073139e46334e40423826498a736)