Hazards of the Angaud Basin PPRi (63DDT20090003) approved on 20/06/2022 — Puy-de-Dôme
Description
Hazard maps determine flooded areas in terms of perimeter and flood intensity. Three hazard levels (low, medium and strong) are defined according to the physical parameters of the flood that can be translated in terms of severity for people and damage to property.
These parameters are water heights and flow velocities:
— strong hazard, for water heights exceeding 1 metre, and/or flow velocities greater than 1 metre per second,
— average hazard for water heights between 0.5 and 1 metre and speeds of less than 1 metre per second, or speeds between 0.5 and 1 metre per second and heights of less than 1 metre,
— low hazard for water heights of less than 0.5 metres and speeds of less than 0.5 metres per second.
The intensity of the hazards is related to the possibilities of moving people according to water height and flow velocities.
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Tags
- données-ouvertes
- ddt-63
- ppr