Irrigation in the Pacific Northwest

Irrigation Operating Hours per Season

This calculates the number of hours per season that an irrigation system must run to supply the water needs of a crop. Learn more about the units used on this page.

Irrigation System Flow Rate:
Irrigation System Application Efficiency (%):
Irrigation System Operating Time Per Season:



The Equation


= Total Required Irrigation System Opating Hours (hrs/season)

= Seasonal Crop Water Use or ET (in)

= Area Irrigated by the System (acres)

= Irrigation System Flow Rate (gpm)

= Irrigation Application Efficiency (decimal, or %/100)






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