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FreeResearchGlobal
GLWD v2 Global Lakes & Wetlands Database
Maps 18.2 million km2 of wetlands globally at 500m resolution with 33 waterbody and wetland types. Published 2025 in Earth System Science Data.
hydrosheds.org
At a glance
- Region
- Global
- Coverage
- Global (56S to 84N)
- Access
- Free
- Category
- Research
- Last updated
- 2025
What's inside
- Lakes
- Wetlands
- Inundation Extent
Terms explained
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: Lakes
- 02
Change over time
See how lakes and wetlands have grown or shrunk.
- 03
Hazard maps
Map flood-prone areas and who and what is exposed.
Because it has: Inundation Extent
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
Flood extent from SAR
Segment flooded areas in radar imagery, even through cloud.
Related water data
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- Global Peatlands Initiative MapGlobal | Free
- Hydroweb LEGOS - Satellite Altimetry Water Levels of Rivers and LakesGlobal | Free
- Natural Earth Water VectorsGlobal | Free
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