CROPWAT
Free
FAO's classic tool for crop water requirements and irrigation scheduling from climate and crop data.
Hydrology & Catchment AnalysisDormantIrrigationEvapotranspiration
4 tools · Topic
Irrigation Design & Scheduling Tools
Irrigation engineering spans crop water requirements, scheduling and conveyance design. This page collects FAO-methodology implementations, scheduling models and the design utilities used in agricultural water management.
HYDRUS
Freemium
The standard for vadose-zone modelling — variably saturated flow and transport by Richards' equation.
Groundwater & HydrogeologyActiveGroundwater ModellingContaminant Transport
SSEBop
Gov-Public
USGS operational ET at Landsat resolution — 30m actual evapotranspiration for water-rights and irrigation accounting.
Data, Monitoring & ForecastingActiveEvapotranspirationIrrigation
pyet
Open Source
Reference and potential evapotranspiration in Python — 20+ published methods, FAO-56 included, on pandas/xarray.
Hydrology & Catchment AnalysisActiveEvapotranspirationIrrigation