Nobody likes brown spots or dry patches in their lawn. They show up quickly, ruin the look of your yard, and often signal an underlying sprinkler issue. For homeowners in the Eugene–Springfield area, where lawns face heavy clay soils, tree roots, and shifting sun exposure, it’s especially important to stay on top of irrigation maintenance.
Why Do Brown Spots Happen?
Most brown spots in grass are caused by uneven water coverage. Some parts of your yard may be getting plenty of water while others are left out. Unfortunately, these issues can be hard to spot until the lawn is already stressed.
Common sprinkler-related causes include:
- Sprinkler heads set too low in the ground
- Crooked or tilted sprinkler heads
- Broken or out-of-alignment sprinklers
- Sprinklers that don’t rotate or “pop up” properly
- Blockages from mulch, plants, or new landscaping
- Low or inconsistent water pressure
- Worn-out or clogged nozzles
- Tree roots pressing against irrigation lines
- Valves that stick or don’t fully open
Checking your irrigation system a few times a year—especially in spring and mid-summer—can help catch problems before they spread across your lawn.
How to Tell If Your Yard Isn’t Getting Even Water
If you suspect uneven watering, here are some ways to confirm:
1. Measure
You can set out mini rain gauges around your yard to measure the amount of water spraying onto brown vs green areas. This is an easy way to know if lack of water is causing the issue as most of us are sleeping while our sprinklers run.
2. Smart Sprinkler Controllers
Lane County weather can shift quickly—from cool mornings to hot afternoons, or from rainy days to sudden dry stretches. A smart controller adjusts watering based on real-time weather conditions, so your lawn always gets the right amount of water. EWEB even offers a rebate for installing one of these Smart Water Controllers.
3. Get a Professional Audit
Eugene Sprinkler Service can help to identify issues with your sprinkler system that is causing brown spots. The best solution is through early prevention by having your sprinkler system professionally activated in Spring. Sign up for our Annual Spring Activation Services online or by calling 541-204-1995. If you are noticing brown spots or other issues near the end of Summer, it’s an excellent time to audit the system so it’s very clear where the issue lies before your lawn naturally greens up again before the following Spring.
Other Causes of Brown Spots
Not every brown patch comes from sprinklers. Other culprits include:
- Sun exposure – Lawns that get full afternoon sun need more water than shaded areas.
- Pets – Dog urine can leave small yellow or brown patches.
- Fungus or disease – Especially common in damp areas or shaded lawns.
- Seasonal stress – Hot, dry summers can stress certain grass types more than others.
Taking note of when and where brown spots appear can help identify the cause.
When to Call in the Pros
If you’ve tried quick fixes and brown spots keep returning, it may be time for a professional irrigation audit.
What Is an Irrigation Audit?
An audit is a detailed inspection that measures your sprinkler system’s water flow, pressure, and coverage. The goal is to make sure your yard gets the water it needs without waste.
Benefits of an irrigation audit:
- Identifies hidden issues before they become expensive repairs
- Improves water efficiency and lowers utility bills
- Keeps your lawn greener and healthier all season long
Best Times to Schedule an Audit
In the Eugene–Springfield area, the ideal times are:
- Spring – Before your lawn’s peak growing season
- Late summer – When water demand is highest and lawns are most stressed
Smarter Lawns, Lower Bills
Even if you already have a smart sprinkler controller, combining it with an irrigation audit gives you the most accurate watering schedule possible. That means less wasted water and more consistently green grass.
Need Help with Brown Spots in Your Lawn?
At Eugene Sprinkler Service, we specialize in irrigation audits, sprinkler system repairs, and smart controller upgrades. Whether you’re in Eugene, Springfield, or the surrounding areas, our team can help keep your yard looking its best.
👉 Contact us today to schedule a sprinkler system check-up. Call 541-204-1995