GERMANY · DESIGNATIONS · FLOODING

Hochwassergefahrenflächen HQ100 (bundesweit, WasserBLIcK)

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What this layer shows

Areas flooded by a flood of medium probability (HQ100, statistically at least once in 100 years). This is not automatically a floodplain under § 76 WHG, which applies only once designated or provisionally secured. Compiled nationwide by the BfG (WasserBLIcK) from the Länder's flood hazard maps under the Floods Directive (3rd cycle 2022–2027); river and coastal flooding are included. What counts is the Land's own flood hazard map and the competent water authority, not this map.

Publisher and licence

WasserBLIcK/BfG und Zuständige Behörden der Länder, 2025 · CC BY 4.0

Official guidance ↗

Where the data comes from

ARCGIS · geoportal.bafg.de

Merestone asks this service live for the area on screen. Nothing is copied or stored beyond a short cache.

Facts shown for each feature

Art

In these presets

Wasser und Hochwasser

The water-law side of a site: drinking-water and medicinal-spring protection areas with their zones, designated flood plains and flood hazard maps, Saxony’s flood-generation areas, and bathing waters. Flood plains designated under § 76 WHG are subject to the construction safeguards in § 78 WHG, including statutory exceptions and possible approvals by the competent authority. The map does not replace the authority’s assessment of a specific proposal.

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