OpenET 48-State Evapotranspiration
Satellite-based evapotranspiration at quarter-acre resolution across 48 contiguous U.S. states. Expanded from 23 states in December 2025. Over 13,000 users.
etdata.org
At a glance
- Region
- United States (North America)
- Coverage
- 48 states
- Access
- Free
- Category
- Research
- Last updated
- 2025
What's inside
- Evapotranspiration
- Water Use
Terms explained
What you can do with it
Typical work that data of this type supports.
- 01
Irrigation scheduling
Decide when and how much to irrigate.
Because it has: Evapotranspiration
- 02
Water accounting
Track how much water crops actually consume across a command area.
- 03
No-gauge areas
Monitor places with no ground stations.
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Field-scale ET
Estimate crop water use per field by combining satellite and weather with ML.
- 02
Demand forecasts
Predict irrigation demand weeks ahead for canal and pump planning.
- 03
Segmentation
Map water, crops and land use pixel by pixel with deep learning.
Related water data
- OpenET API Documentation - Satellite EvapotranspirationNorth America | Free
- AgWeatherNet (Washington State University)North America | Free
- AZMET - Arizona Meteorological NetworkNorth America | Free
- Bureau of Reclamation AgriMet NetworkNorth America | Free
- Bushland Texas Crop Water Balance / Evapotranspiration Lysimeter DatasetsNorth America | Free
- CIMIS - California Irrigation Management Information SystemNorth America | Free
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