Departmental table of the origin of linear risk of flood PPRs in the department of Orne

The origin of the risk characterises the real-world entity which, through its presence, represents a potential risk. This origin may be characterised by a name and, in some cases, a geographical object locating the actual entity causing the risk. The location of the entity and the knowledge of the dangerous phenomenon are used to define the risk pools, the risk-exposed areas that underpin the RPP.
For NRPPs, this entity may, for example, correspond to a watercourse, a geologically unstable zone — source: DDT61/CPP/CTTN — validity: 02/09/2021