Map Hydrozones by Plant Water Need
2 hoursGroup turf, beds, and drought-tolerant areas into separate valve zones based on sun and soil type.
Field context
This workflow is part of 3 niche fields
Complete guide for irrigation system design — step-by-step workflow, tools, checklist, and expert tips to get started.
Group turf, beds, and drought-tolerant areas into separate valve zones based on sun and soil type.
Place sprinklers so each head throws to the next, calculate GPM per zone, and size mainline pipe diameter.
Trench pipe below frost line, wire controller, flush lines before attaching heads, and pressure-test each zone.
Set run times from precipitation rate calculator output, tune for season, and add rain sensor or smart controller.
Determines sprinkler spacing and precipitation rate for head-to-head coverage.
Sizes pipe diameter based on total GPM demand and velocity limits.
Sizes overflow or drain lines for valve boxes and low points.
Converts precipitation rate targets into zone run minutes per week.
Sprinkler Precipitation Rates
| Head Type | Precip (in/hr) | Spacing |
|---|---|---|
| Fixed spray | 1.5–2.0 | 12–15 ft |
| Rotor | 0.4–0.8 | 25–35 ft |
| Drip | 0.5–1.0 GPH/emitter | By plant |
Combine trenching for irrigation, drainage, and low-voltage lighting in one pass when possible.
Match plant mature size to spacing calculators — overcrowding creates maintenance debt for years.
Wear eye and ear protection when cutting pavers, blocks, or running plate compactors.