Total flow, gallons per run and inches of water applied.
All sprinkler outputs are summed, water volume over run time is found, then spread over the covered area as depth. Knowing the actual depth applied lets you hit a half-inch per watering instead of guessing with the clock.
Sprinkler Flow
Flow = heads x gpm; depth = gallons x 231 / area(sq ft) / 144
Flow = heads x gpm; depth = gallons x 231 / area(sq ft) / 144 All sprinkler outputs are summed, water volume over run time is found, then spread over the covered area as depth.
Knowing the actual depth applied lets you hit a half-inch per watering instead of guessing with the clock.
This calculator takes 4 inputs: Sprinklers, Flow each, Run time, Covered area. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.