INSPIRE - Flood zones - Runoff 100 years return period scenario in Wallonia (BE)

This INSPIRE compliant data layer gathers information from the 100-year return period scenario of floodplain runoff.

The data comes from the business data “Flood zones – 100 years return period scenario – Runoff” (https://geoportail.wallonie.be/catalogue/65391f93-d51a-4b62-9103-8800e4aaee36.html).

This data is part of the Flood Directive 2007/60/EC. The mapping of flood zones the 100-year return period scenario is established for the Walloon part of the 4 international river basin districts (Meuse, Escaut, Rhine, Seine). It is imposed by the European Flood Directive (ED), or Directive 2007/60/EC of 23 October 2007 on the assessment and management of flood risks.
It was approved by the Walloon Government on 4 March 2021 (MB: 24/03/2021).
This layer represents runoff flooding, for the 100-year period scenario.

When the flood originates in the concentration of natural stormwater runoff, the flood corresponds to one axis. In this case, it is a concept of peak flow that is represented, the possible values of which are: low, medium or high.