Short answer: red clay drinks slowly and holds water for a long time once it is in. In a dry spell, run each zone in short cycles with rest between, so the water soaks down instead of running off. A smart controller starts from $575 and a rain sensor from $425.
Why clay is hard to water
North Atlanta sits on red clay. The particles are tiny and pack tightly, so the gaps for water to move through are small. When clay is dry and baked, the top crusts over and sheds water. When it is wet, it holds water for days. That is the opposite of sandy soil, which takes water fast and loses it fast.
In a dry spell, this matters. A single long run on a hard-baked slope sends water down the hill and into the street while the roots stay dry. The lawn looks watered because the grass is wet. The soil underneath is not.
Cycle and soak
The usual fix is called cycle and soak: run the zone for a short time, stop, let the water sink in, then run it again. Two or three short cycles do more than one long one. Most modern controllers let you set several start times or a soak delay. If yours does not, a smart controller makes it easy.
- Find where runoff starts. Run a zone and watch for the point where water pools or runs along the surface.
- Set the cycle to stop just before that point.
- Add a second cycle after the water has had time to soak in.
- Check the soil depth with a probe or screwdriver the next day.
- Adjust slowly. Change one thing at a time.
What slopes change
| Spot | What happens | What helps |
|---|---|---|
| Top of a slope | Dries first, runs off fastest | Short cycles, more soak time |
| Bottom of a slope | Collects runoff | Less water |
| Flat, shaded areas | Stays wet longer | Longer gaps between runs |
| Compacted new-build soil | Sheds water | Shorter cycles, aeration by a lawn pro |
| Beds with mulch | Holds moisture | Drip rather than spray |
Drought rules
Georgia’s outdoor watering rule allows daily watering between 4 p.m. and 10 a.m. for anyone on a permitted public water system. During a drought declaration, local limits can be stricter, so check with your water provider before you change a schedule. Drip and soaker-hose irrigation, hand watering with an auto-shutoff nozzle and personal food gardens are exempt from the daily window, but not necessarily from a drought order.
Where a smart controller helps
A smart controller adjusts to weather and can run cycle-and-soak programs by zone. It will skip a cycle after rain. A rain sensor from $425 does the skipping on its own. Standard controllers start from $425 and battery controllers from $475. A good controller does not fix poor coverage, but it makes it easy to match each zone to its soil.
When the sprinklers are not the problem
If the lawn browns in patches while the controller runs on schedule, look at the heads. A clogged or broken head sprays nothing on its patch. A leaking valve can keep a zone soggy. A dead zone is a valve, a wire or a controller fault. Our minimum service call is $95, and valve locating starts from $185.
What we do on site
Each zone is designed around your soil and slope, so we look at how fast water goes in on your yard. We know North Atlanta’s red clay, summer heat and hard winter freezes firsthand. We run the zones, watch for runoff, and set the cycles. You get a firm number before any work begins, and the estimate is free.
When to call us
Call if the lawn browns while the system runs, if water runs off a slope, or if you want cycle-and-soak set up. We are family-owned, licensed and insured, with same-day service. See sprinkler repair and the irrigation overview.
FAQ
Why does water run off my Gwinnett lawn? Clay absorbs slowly, especially when baked dry. Shorter cycles with soak time help.
What is cycle and soak? Several short run times with rests between them so water can sink in.
Can I water every day in a drought? Georgia allows watering between 4 p.m. and 10 a.m. Drought orders can be stricter, so check with your water provider.
Do I need a smart controller? Not required, but it makes cycle-and-soak and rain skipping simple.
Prices from our price list. Updated October 2026. Watering rules: Georgia EPD, epd.georgia.gov/watershed-protection-branch/water-conservation.