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FreeResearchGlobal
Global River Water Quality Archive (GRQA)
17 million observations, 43 parameters from 1898-2023
zenodo.org
At a glance
- Region
- Global
- Coverage
- 125+ years of data
- Access
- Free
- Category
- Research
- Last updated
- 2025
What's inside
- Water Quality
- Rivers
- Historical Data
- Time Series
What you can do with it
Typical work that data of this type supports.
- 01
Hotspots and trends
Find where contamination is high and whether it is getting worse.
Because it has: Water Quality
- 02
Compliance checks
Compare samples against drinking water and discharge standards.
- 03
Sampling plans
Decide where to sample and treat first.
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Risk maps
Predict contamination where no samples exist, from geology, land use and climate.
- 02
Anomaly alerts
Catch sudden spikes in sensor or lab data automatically.
- 03
From satellite
Estimate turbidity and chlorophyll in lakes and rivers from imagery.
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- Copernicus Lake Water Quality NRT v2 (100m)Global | Free
- NASA STREAM Water Quality MapsGlobal | Free
- Surface Water Quality Dataset 1940-2023Global | Free
- World Bank Water Data PortalGlobal | Free
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