Smart Irrigation
What Is Precipitation Rate?
Precipitation rate is the depth of water applied to an irrigated area per unit of time, commonly expressed in inches per hour.
How to Understand It
It describes water depth over an area, not the gallons discharged by a single nozzle. The example shows an average collected depth of 0.25 inch in 15 minutes: 0.25 × 60 ÷ 15 = 1 inch per hour. Collection across the zone helps reveal uneven coverage.
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