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    Irrigation System Required Total Flow Rate

    Use this form to calculate the system capacity (flow rate) required to meet the demands of a field.

    System Pumping Requirements Calculator

    Net Application Required Per Week:
    Total Area:
    Total Hours Available to Operate per Day:
    hrs
    Total Days Available to Operate per Week:
    days per week
    Irrigation Efficiency:
    %
    Total Flow Required to Operate System:

     

    The Equation

    This calculator uses this formula to determine the system pumping requirements of a field.


    Where:

    = Total flow rate required to operate irrigation system (gpm)

    = The net application required per week (in)

    = Total area to be irrigated (acres)

    = Total hours available to operate per day (hrs)

    = Total days available to operate each week (days)

    = Efficiency of the irrigation system (as a deciaml)

    Reference: Washington State University