Contains the lines representing geographical elements of the management files entered in SYLVA
__Origin__
The perimeter of a prescribed PPR is usually provided in the prefect’s prescription order. The perimeter d' exposure to risks — or regulated perimeter — corresponds to the \#x27; geometric aggregation of l' all the restricted zones listed in the same PPR. The perimeter of the study corresponds to the envelope in which the hazards were studied.
Reference data used: BDOrtho IGN, PCI Vector DGFIP.
__Partner organisations__
DDT Loir-et-Cher
__Links annexes__
* [XML metadata view](http://ogc.geo-ide.developpement-durable.gouv.fr/csw/all-dataset?REQUEST=GetRecordById&SERVICE=CSW&VERSION=2.0.2&RESULTTYPE=results&elementSetName=full&TYPENAMES=gmd:MD_Metadata&OUTPUTSCHEMA=http://www.isotc211.org/2005/gmd&ID=fr-120066022-jdd-83429111-1483-40cf-a7fc-76bf1b804c1b)
* [better knowledge of risks in the territory](http://www.georisques.gouv.fr/)
* [COVADIS data standard: Scope of PPRN](http://geostandards.developpement-durable.gouv.fr/afficherPageStandard.do?jeu=N_PERIMETRE_PPRN_AAAANNNN_S)
* [risk prevention](http://www.nievre.gouv.fr/prevention-des-risques-r84.html)
[See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/a763c7a9a4eb8db5528703fc59b50ff9427c8551)
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