data.gov.uk - Hydrological Open Data (Environment Agency)
UK national open data portal record for the Environment Agency's hydrological open data: rainfall, river flow, river level and groundwater readings from ~7,000 monitoring stations across England under the Open Government Licence.
data.gov.uk
At a glance
- Region
- United Kingdom (Europe)
- Coverage
- England
- Access
- Free
- Category
- Government
- Last updated
- 2026
What's inside
- river flow
- river level
- groundwater
- rainfall
Terms explained
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: river flow
- 02
Low flows
Set environmental flows and check what is left in the river in a dry year.
- 03
Design storms
Build rainfall intensity-duration-frequency curves for drainage design.
Because it has: rainfall
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
Downscaling
Turn coarse rainfall grids into field or ward scale estimates.
Machine access and documentation
Open API
CKAN catalogue on data.gov.uk linking to hydrology REST API
Licence: Open data
Listed in our registry of open water APIs, which WaterDataGPT can query live.
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- CAMELS-GB v2: sub-daily and groundwater extension (671 catchments)Europe | Free
- EPA Ireland Water DataEurope | Free
- metadata.naturalresources.wales - NRW River Levels API RecordEurope | Free
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