Sentinel-6 Michael Freilich Radar Altimetry
High-precision radar altimetry from Poseidon-4 SAR altimeter with inland water targeting for 31,805 locations (8,655 rivers, 21,666 lakes, 1,484 reservoirs). Reprocessed baseline G01 released Dec 2025
podaac.jpl.nasa.gov
At a glance
- Region
- Global
- Coverage
- Global, 10-day repeat, 31,805 inland water targets
- Access
- Free
- Category
- Space Agency
What's inside
- Water Level
- Satellite Altimetry
- Lake Level
- River Level
- Sea Surface Height
What you can do with it
Typical work that data of this type supports.
- 01
Storage tracking
Follow storage and releases through the season.
Because it has: Water Level
- 02
Change over time
See how lakes and wetlands have grown or shrunk.
- 03
No-gauge areas
Monitor places with no ground stations.
Because it has: Satellite Altimetry
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Storage from space
Estimate volume from satellite water area and altimetry.
- 02
Release decisions
Optimise releases against inflow forecasts.
- 03
Segmentation
Map water, crops and land use pixel by pixel with deep learning.
Related water data
- Hydroweb LEGOS - Satellite Altimetry Water Levels of Rivers and LakesGlobal | Free
- Jason-3 / Sentinel-6 Radar Altimetry for Rivers and LakesGlobal | Free
- Theia / Data Terra Catalogue - Hydroweb Operational Altimetry River & Lake Water LevelGlobal | Free
- AVISO+ Satellite Altimetry ProductsGlobal | Registration Required
- C3S Satellite Lake Water LevelGlobal | Registration Required
- C3S Satellite Sea Level Gridded DataGlobal | Registration Required
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