data.europa.eu: Open Water Data (European Data Portal)
The official EU open data portal aggregating water-related datasets from member states' open data portals, harmonised and searchable with downloads and APIs across hydrology, water quality and water resources.
data.europa.eu
At a glance
- Region
- EU (Europe)
- Coverage
- Europe
- Access
- Free
- Category
- International
- Last updated
- 2026
What's inside
- water quality
- hydrology
- water resources
What you can do with it
Typical work that data of this type supports.
- 01
Design flows
Estimate 1-in-50 and 1-in-100 year floods for bridges, culverts and spillways.
Because it has: hydrology
- 02
Low flows
Set environmental flows and check what is left in the river in a dry year.
- 03
Hotspots and trends
Find where contamination is high and whether it is getting worse.
Because it has: water quality
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Flow forecasting
Train LSTM-style models on past records to forecast river levels and flow days ahead.
- 02
Ungauged basins
Combine with catchment data to estimate flow where there is no gauge.
- 03
Risk maps
Predict contamination where no samples exist, from geology, land use and climate.
Machine access and documentation
Open API
data.europa.eu SPARQL and REST search APIs
Licence: Open data
Listed in our registry of open water APIs, which WaterDataGPT can query live.
Related water data
- datos.gob.es - Spanish National Open Data Catalogue (Water/Agua)Europe | Free
- Italy ISPRA Environmental DataEurope | Free
- EEA WISE WFD ArcGIS REST (Water Framework Directive)Europe | Free
- ISPRA Inland Waters DatabaseEurope | Free
- UK Environment AgencyEurope | Free
- Agència Catalana de l'Aigua - Real-time Water (ACA)Europe | Free
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