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data api · Wales

Government / regulator

Live Flood Warnings and Alerts Application Programming Interface (API)

Flood Warnings are provided by the constant monitoring of stations and forecasting flooding from rivers or the sea: - Severe Flood Warning: Severe flooding. Danger to life. - Flood Warning: Flooding is expected. Immediate action required. - Flood Alert: Flooding is possible. Be prepared. - Warning no longer in force: Flood warnings and flood alerts that have been removed in the last 24 hours. Flood Warnings are available on our website and as a Live Feed. The live feed provides a summary of floo

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What's in it

Data offered docs-verified
flood warning status: Alert, Warning and Severe warnings sent externally · Warning no longer in force (warnings and alerts removed in the last 24 hours) · current status of each Flood Warning Area
Coverage docs-verified
England and Wales
Resolution docs-verified
Per Flood Warning Area status; updated on FWIS every minute, presented to external users every 15 minutes
Update frequency docs-verified
Every minute on FWIS; presented externally every 15 minutes
Formats docs-verified
XML
Access docs-verified
Free and open, no access restrictions. Dataset page licence field is 'Not set'; site content is under OGL v3.0 unless otherwise stated.

Useful for

Use cases llm-inferred
Check current flood warning status for the Flood Warning Area containing a site during an FRA or flood risk screening · Monitor live flood warning status for active construction sites or civils works · Feed flood warning status into a client-facing alerting or dashboard tool for water and drainage projects
Audience llm-inferred
flood consultants · drainage engineers · hydrologists · civils engineers · GIS analysts

Limitations

Constraints llm-inferred
Covers England and Wales only; entry region lists Wales alone · Live feed summarises only warnings sent externally, not every internal warning · External presentation is every 15 minutes, not per minute · Provides warning status only, not gauge levels, flows or forecasts · Delivered as XML via sFTP through the Data Distribution Hub, so access setup is needed · Docs do not describe endpoints, schema or versioning for the API · Dataset page licence field is 'Not set'
Licence
["There are no access restrictions on this data. NRW may release, publish or disseminate it freely.", "\u00a9 CNC/NRW. Data may be re-used under the terms of the Open Government Licence providing it i
Authentication
Unknown — review source docs
GitHub stars
Unknown
Last commit
Unknown
Last successful page check
16/10/2026
Page health
page reachable
Package
Not recorded
Verification
Not independently verified

Provenance & evidence

Listed in data.gov.uk public catalogue API on 2026-10-16; relevance/value screened (haiku).

Metadata observed 14/10/2026 · research sweep: sweep-2026-10-16 (data.gov.uk)