Simple download service (Atom) of the dataset: PHE point grid — PPRI in the Cavu catchment area — municipalities of Zonza, Lecci and Conca
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Provided by BUREAU DE RECHERCHES GÉOLOGIQUES ET MINIÈRES
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In the area exposed to one or more hazards represented on the map of hazards used for the risk analysis of the PPRI of the Cavu, Ficaja and Maresciale watersheds, a grid of points makes it possible to know at each point the NGF coast of the highest waters for the reference flood.
The hazard map (associated point grid) is the result of the flood risk study conducted by SUEZ-SAFEGE in May 2021, which allowed the revision of the PPRI of the Cavu watershed approved on 15/05/2001. This revision incorporates the main tributary of Cavu: the Casavecchia and the watersheds of the Maresciale and Ficaja rivers.
The evaluation method is specific to each hazard type. It leads to the delimitation of a set of areas on the study perimeter constituting a zoning graduated according to the level of the hazard. The allocation of a hazard level at a given point in the territory takes into account the probability of occurrence of the dangerous phenomenon and its degree of intensity.
All hazard areas shown on the hazard map are included. Areas protected by protective structures must be represented (possibly in a specific way) as they are always considered subject to hazard (case of breakage or inadequacy of the structure).
Hazard zones can be described as developed data to the extent that they result from a synthesis using multiple sources of calculated, modelled or observed hazard data. These source data are not concerned by this class of objects but by another standard dealing with the knowledge of hazards.
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