IWMI Water Data Portal (waterdata.iwmi.org)
International Water Management Institute's one-stop portal for meteorological, hydrological, socio-economic and spatial water/agriculture data, including South Asia products such as drought and flood mapping, Nepal climate vulnerability, glacier/snow basin data and Jaffna (Sri Lanka) water quality. Data carry standardized metadata and are downloadable.
waterdata.iwmi.org
At a glance
- Region
- Sri Lanka (Asia)
- Coverage
- South Asia and global
- Access
- Free
- Category
- Research Institute
- Last updated
- 2025
What's inside
- Hydrology
- Meteorology
- Drought
- Flood
- Spatial
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: Hydrology
- 02
Low flows
Set environmental flows and check what is left in the river in a dry year.
- 03
Hazard maps
Map flood-prone areas and who and what is exposed.
Because it has: Flood
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
Flood extent from SAR
Segment flooded areas in radar imagery, even through cloud.
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