Guidelines for Computing Crop Water Requirements
Evaporation and Consumptive Irrigation Requirements for Idaho (Allen and Robison, 2006 (rev. 2012) updated evapotranspiration (ET) and net irrigation requirement (NIR) estimates for areas in Idaho. New ET calculation procedures were employed including an updated reference equation. The results of the work and data sets are available at our ETIdaho site and supersede those from Appendix E — Estimating Consumptive Irrigation Requirements for Crops in Idaho (Allen and Brockway, 1983). Work is currently underway to update the datasets through 2015 and add additional sites.