Calgary’s predominant soil type is heavy clay — and it requires a fundamentally different irrigation approach than sandy soils found in other Canadian cities. Running a standard irrigation cycle on Calgary clay causes runoff and compaction; running cycles that are too short leaves the lawn under-watered. This guide covers what to change.
Calgary Clay Soil Irrigation — Key Adjustments
| Setting | Standard Soil | Calgary Clay |
|---|---|---|
| Cycle-and-soak | 1 long run per day | 2-3 short runs (e.g. 7 min, rest, 7 min) to avoid runoff |
| Head spacing | Head-to-head standard | MP Rotator heads preferred — lower precipitation rate, less puddling |
| Start time | Any early morning | 4am-6am — clay absorbs slowly, needs full morning to soak before heat |
| Run time per cycle | 15-20 min | 6-10 min, cycled 2-3x with soak time between |
| Frequency | 3x/week | 3-4x/week in summer — clay retains well when properly saturated |
J.G. Irrigation designs all Calgary systems with the local clay soil profile in mind — MP Rotator heads, correct precipitation rate matching across zones, and cycle-and-soak programming built into the controller setup. Call 587-433-4795 for a clay soil irrigation assessment.
Why does my Calgary lawn get puddles when I run the sprinklers?
Puddling on a Calgary lawn during irrigation is almost always a clay soil absorption rate issue. Calgary clay absorbs water at roughly 0.1-0.15 inches per hour — much slower than sandy soil. If your heads deliver water faster than clay absorbs it, the water runs off. The fix is cycle-and-soak programming: run each zone in 7-10 minute bursts with 30-45 minute rest periods between each cycle. J.G. Irrigation can reprogram your controller for cycle-and-soak: 587-433-4795.
Calgary Clay Soil Irrigation Assessment — Free Quote
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