HEC-HMS
FreeVerified
The US Army Corps standard for rainfall-runoff modelling — event and continuous simulation, free to use.
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pyet
ActiveReference and potential evapotranspiration in Python — 20+ published methods, FAO-56 included, on pandas/xarray.
- Pricing
- Open Source
- License
- MIT
- Commercial use
- Permitted
- Ecosystem
- Python, pandas, xarray
- Platform
- Windows, macOS, Linux
Install
pip install pyetAbout pyet
pyet estimates reference and potential evapotranspiration from meteorological data using more than twenty published formulations — FAO-56 Penman-Monteith, Priestley-Taylor, Hargreaves, Makkink, Oudin and the rest — implemented consistently over pandas time series and xarray grids, tested against literature values.
Because every method shares the same interface, comparing ET formulations (a common sensitivity in water-balance and irrigation studies) becomes a loop instead of a literature project. A clean, well-tested building block for hydrological and agricultural workflows.
Where it fits in the workflow
TerrainCatchmentRainfallRunoffRoutingHydraulicsMappingReporting
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