Linear entity causing the risk of the upper Aa PPRN

The origin of risk characterises the real-world entity which, by its presence, represents a potential risk. This origin can be characterised by a name and, in some cases, a geographical object l' real entity to #x27; origin of risk. The location of the entity and the knowledge of the dangerous phenomenon are used to define the risk basins, the areas exposed to the risks that form the PPR.For PPRNs, this entity may, for example, correspond to a stream of water, a geologically unstable area. __Origin__ Regulatory zoning is the result of crossing the hazard with urban issues. The hazard map (=crossing heights/speeds) was made by a design office by modeling on Lidar support, reported on a Scan25©IGN2011. Adjustments were made to the parcel as part of the postponement of regulatory zoning on a cadastral background. In addition, the regulatory map shows: — the low hydrographic areas resulting from the Atlas of Flood Zones Crossed with Exzeco (Extraction of Flow Zones) & 1 km²; — exceptional hazard areas corresponding to a millennial hazard. __Partner organisations__ DDTM Pas-de-Calais __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-bdb2a9d7-5011-4a81-b1f4-3af53490e57c) * [Dynamic Mapping of the Var DDTM](http://carto.geo-ide.application.developpement-durable.gouv.fr/814/internet.map) [See this page on geo.data.gouv.fr](https://geo.data.gouv.fr/fr/datasets/81eaadd122ee017f209d26fe90955c64a89c42f7)