Official Flood Zones - France

Natural Hazardsinsurancelogistics

The Official Flood Zones – France dataset is a national vector layer delineating areas
exposed to fluvial (river) flooding at multiple return periods, produced in compliance
with the EU Floods Directive (2007/60/EC) by French authorities. The dataset maps the
spatial extent of flood inundation across three hazard classes from High (30-year) to
Low (1000-year). It is essential for flood risk assessment, insurance exposure modelling,
urban planning, and regulatory compliance with national and EU-level flood hazard
mapping requirements.

Data Visualisation

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Technical information

Data coincides with the actual GeoNetwork catalog record - this is our most recent verified data.

Coverage	France
Data format	Vector
Projection	EPSG:3857 (Web Mercator)
Source	JRC Risk Data Hub
License	Pending — not yet captured for this layer
Last updated	2026-10-31

Interpreting the data

each polygon is classified by its return period attribute — lower
return periods indicate more frequent, higher-probability flood events; higher return
periods indicate rarer but potentially more severe events. Classes range from High
(30-year, ~3% annual probability) through Moderate (300-year) to Low (1000-year,
0.1% annual probability). The intensity score is inverted relative to return period so
that more frequent flooding scores higher.

Resolution and update frequency

vector polygons; accuracy depends on the source cartographic scale
(to be confirmed). Coverage limited to France. Aligned with EU Floods Directive flood
hazard map reporting cycles.