datamap.gov.wales - Natural Resources Wales River Levels API
DataMapWales documentation/portal for the Natural Resources Wales open River Levels API, providing river, rainfall and sea level measurements (typically every 15 minutes) at monitoring stations across Wales.
datamap.gov.wales
At a glance
- Region
- United Kingdom (Europe)
- Coverage
- Wales
- Access
- Free
- Category
- Government
- Last updated
- 2025
What's inside
- water level
- river level
- rainfall
- sea level
Terms explained
What you can do with it
Typical work that data of this type supports.
- 01
Design storms
Build rainfall intensity-duration-frequency curves for drainage design.
Because it has: rainfall
- 02
Model input
Drive hydrological, crop and urban drainage models.
- 03
Sea-level planning
Plan for sea-level rise and storm surge.
Because it has: sea level
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Downscaling
Turn coarse rainfall grids into field or ward scale estimates.
- 02
Gauge + satellite fusion
Correct satellite rainfall with gauges using machine learning.
- 03
Surge forecasts
Forecast surge and coastal water levels quickly.
Machine access and documentation
Open API
NRW open River Levels REST API (keyless)
Licence: Open data
Listed in our registry of open water APIs, which WaterDataGPT can query live.
Related water data
- data.gov.uk - Hydrological Open Data (Environment Agency)Europe | Free
- metadata.naturalresources.wales - NRW River Levels API RecordEurope | Free
- SEPA Time Series Data Service (Scotland river level and flow API)Europe | Free
- SAIH Spain Real-Time Hydrological InformationEurope | Free
- UK Floods and Droughts Research Infrastructure (FDRI)Europe | Free
- ADO Alpine Discharge & Water Level DatabaseEurope | Free
Find more water data
Search and compare 1,900+ water data sources by region, type and access.