Area exposed to one or more hazards shown on the map of the landslide of the coast of Île-de-France sector Vallée de la Vesle Tranche 1

The hazard map is the result of the study of hazards, the objective of which is to assess the intensity of each hazard at any point in the study area. 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. The hazards causing the risk are contained in hazard documents that may be included in the presentation report or annexed to the PPRN GT. These documents are used to map the different intensity levels of each hazard considered in the risk prevention plan. Spatial resolution: 1/10 000 Genealogy: The boundaries of a hazard zone are shown on the hazard map according to the level of the hazard. In other words, the polygon objects representing the hazard zones form a partial coverage of the area studied, each of which is a closed polygon in which hazards have the same intensity level. In other words, the mode of cutting into hazard zone is the level of the hazard.