Irrigation in the Pacific Northwest

Drip Line Rate

Use this form to calculate the water application rate of drip irrigation lines (tape, tubing) given the flow rate from individual emitters, the spacing of the emitters along the drip line, and the spacing between the drip lines.

Learn more about the units used on this page.


Emitter flow:
Emitter spacing along the line:
Distance between drip lines:
Application Rate:



The Equation

This calculator uses this equation to determine the Application Rate of a drip line irrigation system.


WSU Prosser - IAREC, 24106 N Bunn Rd, Prosser WA 99350-8694, 509-786-2226,