Hazard zone of the partial revision of the PPRi du Val d’Allier Issoirien (63DDT20160001) approved on 13/06/2018 — Puy-de-Dôme

Area exposed to one or more hazards and represented on the hazard map produced in the development of the RPP. The hazard map is the result of the study of hazards whose objective is to assess the intensity of each hazard at any point in the study area. the flood hazard map of this PPR distinguishes three hazard levels (high, medium, low), determined by taking into account water heights and foreseeable flow rates in the event of exceptional flooding (reference raw 1866). — Strong vagaries: Water level > 1 m and flow velocity > 1 m/s — Low hazards: Water level < 0.5 m and flow velocity < 1 m/s — Medium uncertainties: other cases