Northern California Irrigation Efficiency Calculator

Estimate crop water use and irrigation runtime using typical Northern California reference evapotranspiration (ETo), crop coefficients (Kc), system application rate, and distribution uniformity (DU).

Month January February March April May June July August September October November December Crop (mid-season water use) Alfalfa Almonds Walnuts Olives Grapes (wine/table) Pasture / Hay Tomatoes Onions Potatoes System Application Rate (inches per hour) Distribution Uniformity (DU) Calculate Irrigation Runtime

Irrigation Distribution Uniformity Improvement Calculator

Compare how improvements to distribution uniformity (DU) affect irrigation runtime, water use, and system efficiency under typical Northern California conditions.

Month January February March April May June July August September October November December Crop (mid-season Kc) Alfalfa Almonds Walnuts Olives Grapes Pasture / Hay Tomatoes Onions Potatoes System Application Rate (inches/hour) Previous / Baseline DU Current or Improved DU Compare Irrigation Efficiency