French Drains & Drainage in Cary, Raleigh & the Triangle
Standing water, a lawn that stays soggy for days, water pooling against the foundation — the Triangle’s heavy clay makes drainage its own trade. We move water away and keep it away.
Why Triangle yards hold water — and how we fix it
French drains are one of our specialties for a reason. Wake County sits on dense red clay that barely absorbs water, so after a hard rain it pools on the surface, sheets toward the house, and sits in low spots for days. Left alone that means dead grass, mosquito breeding, mud, and — the expensive one — water finding its way into a crawlspace or against the foundation.
A French drain is a gravel-bedded perforated pipe that gives that water an easy path to somewhere safe. Done right — correct slope, the right fabric so it doesn’t silt up, a real outlet — it’s the difference between a yard you can use and one you avoid. We also handle the rest of the drainage toolkit: surface drains, catch basins, downspout extensions, and regrading so the ground carries water away on its own.
We walk the yard, watch where the water actually goes, and design the fix around it — not a one-size trench. Pick your town below or call and we’ll come take a look.
Drainage work we handle
The full toolkit for a wet yard — matched to what your ground is actually doing.
French drain installation
Gravel-bedded perforated pipe with the right slope, fabric, and outlet to carry subsurface and surface water away for good.
Yard & surface drainage
Standing water and soggy low spots solved with surface drains and channels that give water somewhere to go.
Catch basins & area drains
Collection points that capture pooling water at the low spots and tie into a piped outlet.
Downspout drainage
Roof water piped away from the foundation instead of dumping beside it — often the cheapest fix with the biggest payoff.
Foundation & crawlspace
Keeping water off the house — perimeter drainage that protects the foundation and keeps the crawlspace dry.
Grading correction
Reshaping the ground so it sheds water away from the home on its own, the way it should have from the start.
Standing water and irrigation problems often travel together — if a hidden leak is feeding the wet spot, see irrigation repair.
Every drainage problem has its page
From a soggy lawn to a wet crawlspace — find your exact problem below.
French drain installation →
Gravel-and-perforated-pipe trenches that intercept groundwater before it reaches lawn or foundation.
Yard drainage →
Standing water, soggy grass, pooling — solved with the right mix of surface and subsurface drainage.
Drain repair →
Existing drains that clogged, crushed, or stopped flowing — repaired in sections, usually in a day.
Foundation & crawlspace →
Perimeter drains, downspout routing, and grading that keep water off the foundation from outside.
Downspout drainage →
Buried extensions and pop-up emitters that discharge roof water 6–10 feet from the house.
Surface water & standing water →
Channel drains, swales, and redirection where water visibly collects.
Catch basin installation →
A grate captures the water where it pools; underground pipe carries it away.
Grading correction →
Reshaping the ground itself so water flows away from the house — often the most cost-effective fix.
Choose your town
Every town has its own page, written for local water rules and conditions. All six core towns are live.
Cary, NC
Raleigh, NC
Apex, NC
Morrisville, NC
Holly Springs, NC
Fuquay-Varina, NC
Why our drainage holds up
We design the fix
Drainage is all in the diagnosis — slope, soil, and where water travels. We walk the yard, read where the water goes, and design the fix around it.
Built for clay
We build for Wake County’s clay and real rainfall — correct fabric and outlet so a drain keeps working instead of silting up in a season.
Real outlets
A drain is only as good as where it ends. We make sure water actually leaves the yard, not just moves ten feet over.
Recent work around the Triangle
What our Triangle neighbors say
Infiltration rate, and why clay decides everything here
Infiltration rate is just how fast ground accepts water, counted in inches per hour. Sandy soil takes it in quickly. Wake County red clay is measured in small fractions of an inch an hour, because the particles are so fine and packed so tightly there’s almost no pore space for water to move through. Rain arriving faster than that becomes surface flow immediately, no matter how healthy the lawn is.
Clay also changes with moisture. Dry, it shrinks and cracks; wet, it swells and seals itself. That’s why the first hard rain after a dry stretch runs off worst — the surface closes before the water gets anywhere. And once saturated it stays that way for days, since there’s nothing below willing to take the water on.
Construction compounds it. On a graded lot the top layer is subsoil compacted by heavy equipment under a thin skin of topsoil, so what little pore space the clay had is gone before the sod goes down. Aeration and amendments help a lawn; they don’t fix standing water. It’s the same ceiling that makes irrigation here run in short cycles with rest between, as irrigation maintenance covers — ground that won’t take water in ten minutes won’t take it in forty.
Surface water and groundwater are different problems
Timing tells them apart, and the difference decides the fix. Surface water arrives with the storm — off the roof, the driveway, the neighbor’s slope — collects wherever the ground is lowest, and moves off fast once it has somewhere to go. You can stand at a window during the rain and watch it happen. The answer is collection and conveyance: basins at the low points, channel drains where pavement sheds, swales to carry sheet flow, piped downspout lines that move roof water past the foundation.
Groundwater shows up late and leaves slowly. It’s water traveling sideways through the soil above the clay layer, appearing a day or two after the rain quits — a wet band across a slope that never dries, a seep at the toe of a hill, dampness rising through a crawlspace floor in a week with no weather in it. It doesn’t pool. It weeps.
That one wants interception: a French drain set up-slope of the wet area, deep enough to catch water before it arrives, collecting along its whole length. Put a surface fix on a groundwater problem and you get a grate sitting bone dry in a soggy lawn. Plenty of Triangle yards have both, and the design has to say which is which.
Choosing an outlet — and what happens when there isn’t one
Every drain runs on gravity. Water moves because the far end sits lower than the near end, and the fall has to be continuous — one flat stretch or one dip and silt settles there until the line packs shut. So the outlet gets settled before the trench is designed, not after.
Best case is daylight: a screened open end at a bank, a ditch, or a drop in grade where water leaves the property. Next is a street gutter or storm structure where the town permits the tie-in. Last is a pop-up emitter in a lower part of the yard — fine for roof water, less convincing for a drain expected to run for days.
Flat lots are the hard ones. Stretches of Morrisville near RTP sit close to level, and when nothing on the property is lower than the wet spot, the choices are a deeper run to buy fall, a dry well — limited on clay, since it fills and has nowhere to send it — a pumped basin, or regrading. What we won’t do is push it onto a neighbor or into a sanitary line. An outlet also has to stay open, so we finish ends where they can be found and cleared, not buried in mulch.
French drain & drainage FAQ
What exactly is a French drain?
A French drain is a trench with a perforated pipe set in gravel and wrapped in filter fabric. It collects water from the surface and underground and carries it downhill to a safe outlet. The keys are correct slope, fabric that keeps silt out, and a real place for the water to exit.
Why does my Triangle yard hold water so long?
Wake County’s heavy clay soil absorbs water very slowly, so after a storm it pools on top and sits in low spots. Drainage moves that water off the surface and away from the house instead of waiting for clay to soak it up.
How much does a French drain cost?
It depends on the length, depth, and where the water has to go, so we quote after walking the yard. Estimates are free and pricing is upfront before any work begins — call or text 919-341-9644.
Can you keep water out of my crawlspace or off my foundation?
Yes. Perimeter and foundation drainage, downspout extensions, and regrading all work together to keep water off the house. We start by finding where it’s getting in and build the fix around that.
Tired of a yard that won’t drain?
A local owner walks your yard, finds where the water goes, and builds a drainage fix that lasts. Upfront pricing.
Get your free drainage & French drains quote
Tell us what’s going on and we’ll get right back to you — usually the same day. Prefer to talk? Call or text 919-341-9644.
- Local, licensed & insured
- Upfront pricing — no surprises
- 100% guarantee + 12-month workmanship warranty