Irrigation in the Pacific Northwest

Irrigation Run Time

Use this calculator to determine the length of time that an irrigation system must run to apply enough water to replace the water lost to evapotranspiration. This depends on the irrigation frequency, the water use rate of the crop, the irrigation application rate (precipitation rate), and the irrigation efficiency.

The results are not applicable to self-propelled irrigation systems such as center pivots, linear moves, or hose-reel systems.

Learn more about the units used on this page.

Watering Interval:
Crop Water Use:
Irrigation Application Rate:
Irrigation Efficiency:
Irrigation Run Time:






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