Free Irrigation Zone Calculator
Determine how many irrigation zones are needed based on available water flow and sprinkler head demand.
GPM
GPM
Zones Required
4
Heads per Zone6
Total System Demand48.0 GPM
Zones Required vs Available Water Flow
Irrigation Zone Sizing
Heads per Zone = Available GPM / GPM per Head
Zones = Total Heads / Heads per Zone
Each zone runs one at a time, so the available water flow only needs to support one zone. Group heads with similar precipitation rates into the same zone for uniform coverage.
Example Calculation
24 heads at 2 GPM each, with 12 GPM available.
- 01Heads per zone = floor(12 / 2) = 6
- 02Zones = ceil(24 / 6) = 4 zones
- 03Each zone runs 6 heads at a time.
Frequently Asked Questions
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