How to Level Low Spots in Your Lawn Without Killing the Grass

Low spots in a North Texas lawn are more than a cosmetic annoyance. They collect water after every rain and every irrigation cycle, stay wet far longer than the surrounding turf, and create the perfect conditions for fungal disease, moss, and root rot. Left alone, they grow bigger as the excess moisture continues to stress and thin the grass above them. The good news is that most low spots in established DFW lawns can be filled and leveled without killing or removing the grass — you just have to do it the right way. Here’s a step-by-step approach that works on the Bermuda and St. Augustine turf found across most of the Arlington and North Texas area.

Identify the Root Cause First

Before you fill anything, figure out why the low spot exists. The fill approach is the same in most cases, but if you skip the diagnosis, the low spot often comes back:

• Soil settlement: The most common cause in DFW. When soil was disturbed — for sprinkler lines, underground utilities, or tree removal — it was backfilled but never compacted properly. The soil continues to settle for years after, leaving depressions.
• Clay shrinkage: North Texas black clay loses significant volume when it dries out in summer. Low spots that appear or worsen during dry stretches are often caused by the clay contracting beneath the surface.
• Thatch decomposition: In older Bermuda lawns, a thick thatch layer can decompose unevenly over time, creating soft, low areas that are spongy underfoot.
• Tree root decay: Grinding a tree stump leaves the root system in the ground. As the roots decay over several years, the soil above them collapses, creating depressions that follow the old root pattern.
• Animal activity: Armadillos and moles are common in Tarrant County. Their tunneling creates soft, uneven ground that eventually collapses into low spots.

If the cause is active — a leaking irrigation line, ongoing root decay, or an animal still tunneling — fix it before you level anything.

The Topdressing Method for Low Spots Under 2 Inches

For depressions shallower than 2 inches, topdressing is the safest and most grass-friendly approach. It adds material to the low spot gradually without smothering the turf above it:

• Mow the area short — 1 inch for Bermuda, 2 inches for St. Augustine — so the topdressing material can contact the soil rather than just sitting on top of the grass blades.
• Mix coarse sand with compost or sandy loam in a 50/50 ratio. Do not use straight sand without compost — on DFW clay, pure sand can form a layer that water won’t cross, creating a perched water table that’s worse than the original low spot.
• Fill the low spot with no more than ½ inch of material per application. Pile it on thicker than that and you’ll smother the grass and kill it.
• Work the material into the turf with a landscape rake, a push broom, or the back of a steel rake, spreading it evenly so grass blades poke through.
• Water it in and allow the grass to grow through before evaluating. On healthy Bermuda in summer, that takes about two weeks.
• Repeat next growing season if needed. For a 1.5-inch low spot, you may need three annual applications to fully level the area without harming the turf.

The Sod-Lift Method for Low Spots 2–4 Inches

When a depression is between 2 and 4 inches deep, topdressing alone would require too many applications and risks compounding the problem. The more efficient approach is to temporarily lift the sod, add fill material beneath it, then re-lay it:

• Cut the sod in the low-spot area into manageable sections using a flat spade or sod cutter. Keep each piece about 12 inches wide and as long as the depression allows.
• Carefully peel the sod back without breaking it. Keep the root mat intact — this is the part that will re-establish.
• Add sandy loam or a native soil blend to the exposed area and rake it level with the surrounding grade. Tamp firmly with a tamper or your foot to prevent future settling.
• Re-lay the sod sections, pressing them firmly into the new soil. The top of the re-laid sod should sit at or very slightly above the surrounding turf (it will settle slightly as it re-roots).
• Water deeply immediately after re-laying and keep the soil consistently moist for the first 10–14 days. Bermuda re-establishes quickly in warm weather when moisture is consistent.

What to Do When a Low Spot Is Deeper Than 4 Inches

Very deep depressions — 4 or more inches — are usually the result of a larger soil failure: a collapsed burrow, a decayed stump, or significant settlement after buried work. At this depth, the sod-lift method still applies, but you may need to bring in additional fill material and allow it to settle with irrigation over several weeks before re-laying the sod. Rushing this step leads to re-settlement and puts you right back where you started.

Timing Your Leveling Work in DFW

Bermuda grass, which covers the majority of DFW residential lawns, should only be leveled during its active growing season: late April through early September. The turf needs to be actively growing to push through topdressing material, and sod sections need warm soil to re-establish roots before any cold weather arrives. St. Augustine has a slightly longer window but is more sensitive to being lifted and re-laid — keep the root mat as intact as possible and water aggressively after any sod work.

Preventing New Low Spots

• When having any underground work done — sprinkler systems, utilities, drainage — require the contractor to compact backfill in lifts rather than just dumping soil back in the trench.
• Have irrigation systems audited periodically for slow leaks, which saturate soil and cause accelerated settlement.
• Keep tree stumps ground to at least 8–10 inches below grade so decay happens deeper and causes less surface disruption.
• Aerate regularly to improve drainage and reduce the tendency for water to pool in low spots after rain.

When to Call a Professional

If you have multiple low spots across a large area, recurring depressions that keep coming back, or any spot associated with suspected drainage problems, a professional assessment is worth the call. Hamann Lawn Care & Weed Control has been diagnosing and correcting North Texas turf issues since 2006. Read our post on liquid aeration products and whether they work on Texas black clay for more background on how DFW soil behaves and what actually helps it.