Guide
Standing water in your yard? Causes and fixes in Jacksonville
Why water stands on Northeast Florida lots, how to tell a real drainage problem from a slow storm, what you can try this week and when to call.
A puddle on a Jacksonville lawn for an hour after a summer storm is normal. A puddle that is still there the next day, or the day after that, is a drainage problem — and on Northeast Florida lots it almost always comes down to one of five causes. Here is how to tell which one you have, what you can try yourself this week, and when it is time to call a drainage company.
Why water stands in Jacksonville yards
1. Hardpan under the sand
Most lots here are sand over hardpan — a dense, cemented layer soil scientists call a spodic horizon — somewhere between 12 and 36 inches down. Rain soaks through the sand, stops on the hardpan and either sits there until the surface turns soft or runs sideways to the lowest point on the lot. That is why a yard can look dry and still squish underfoot.
2. A high water table
Near the St. Johns River and the coast, the seasonal high water table is about 2 to 4 feet below the surface, and it rises in the wet season. When the ground is already full from below, a storm has nowhere to soak in. Lots in Mandarin, Southside, Julington Creek and the beaches show this every August.
3. Downspouts that end at the wall
A single downspout can carry the rain from 400 to 600 square feet of roof. On most houses it ends on a splash block a foot from the slab, so a whole roof's worth of water lands in the strip beside the foundation every storm — the one place you least want it.
4. A lot that slopes the wrong way
Builders grade a lot to pass inspection on the day the sod goes down. A few seasons of settling later, the side-yard swale is flat and the low point has moved, sometimes to the back corner and sometimes toward the house. Much of Mandarin, Southside and St. Johns County was built on former wetland, which makes the settling worse.
5. Storms, not drizzle
Jacksonville gets roughly 52 inches of rain a year, and about half of it falls from June through September in afternoon storms that drop 2 to 4 inches at a time. Ground that copes with a gentle rain can be overwhelmed by a cloudburst.
Is it a problem? The 24/48-hour test
The next time it rains hard, note when the storm ends and walk the low spots at the 24- and 48-hour marks.
The yard is draining. Puddles during and right after a cloudburst are normal on sand over hardpan.
Water is reaching that spot faster than it can leave, usually from downspouts or grading. Worth a closer look.
The water has nowhere to go: hardpan, a high water table or no outlet. Ground that stays soft for days is the same signal. This is the yard that needs a drain.
Where the water stands matters as much as how long. Within six feet of the house points to the roof and the downspouts; in the middle of the lawn or along a fence points to the grade and the hardpan. Take a photo while it is wet — it is the most useful thing you can send us.
What you can do yourself
Extend the downspouts
A splash block moves water about 18 inches. A longer extension that carries water several feet out, onto ground that slopes away from the house, is a cheap test: if the wet strip by the wall dries out, the downspouts were the cause.
Clear the gutters
Oak leaves and pine needles fill gutters from fall through winter. A gutter that overflows dumps the roof at the wall no matter where the downspout ends.
Turn the sprinklers down in the rainy season
From June through September the sky waters the lawn. Irrigation running on schedule on top of afternoon storms keeps the sand saturated and leaves no room for the next storm.
Skip the gravel pit
Digging a hole and filling it with gravel rarely fixes anything here: the hole fills to the hardpan and stops.
Never send it to the neighbor
Under Florida's reasonable-use rule you cannot redirect your water onto a neighbor's lot. A ditch or pipe that empties at the property line is exactly that.
When to call a drainage company
- Water stands against the foundation or the slab after every storm
- The garage gets wet, or water runs down the driveway toward the house
- Mosquitoes — water that stands more than a few days breeds them
- An HOA letter about a soggy patch, a dead strip of lawn or runoff
- Standing water past 48 hours, more than once in a season
- Mulch washing out of the same corner of a bed every storm
The fixes, from the cheapest up
Which one your yard needs depends on where the water stands and where it can legally go.
Downspout drainage
Each downspout tied into solid buried pipe and sent to the street, a swale or a dry well. The cheapest fix, and often the whole one.
$300 – $800 per pointDownspout drainage
Regrading and swales
Re-shaping a settled lot so the surface sheds water away from the house into a grassed swale. Nothing to clog.
$1,000 – $5,000Regrading and swales
Catch basins and channel drains
A grated basin in the one spot that ponds, or a channel across the driveway or pool deck, tied to pipe.
$500 – $1,500 per pointCatch basins and channel drains
French drain
Perforated pipe in washed gravel and filter fabric along the wet strip, carried to a legal outlet.
$20 – $45 per footFrench drain
Dry well
A buried chamber that holds a storm and lets it out slowly, for lots with nowhere else to send water.
$1,000 – $3,000Dry well
What will it cost?
Every range in one place and a calculator: length of the run, downspout lines, catch basins, dry wells.
See typical French drain costsStanding water FAQ
How do I fix standing water in my yard after rain?
Check where the downspouts end and use the 24/48-hour test. Water near the house is usually roof water — extend or bury the downspouts. Water that stays 48 hours in the lawn needs a route out: regrading, a catch basin or a French drain to a legal outlet.
Why does my sandy yard hold water?
Because under the sand, at about 12 to 36 inches, most Northeast Florida lots hit hardpan, a dense layer water barely passes. Rain soaks in, stops there and either sits or runs sideways to the lowest point on the lot.
Will a French drain fix standing water?
When the water stands along a line and there is a legal outlet lower than the wet spot, yes. On a flat lot with the water table 2 feet down, the outlet has to be the street or a dry well, and the drain is only as good as that outlet. If the water comes from the downspouts, piping them is cheaper.
How do I drain standing water in my yard naturally?
With gravity: re-shape the low spot so the surface slopes into a grassed swale that carries water to the street, and get roof water away from the wall. It works for surface water, not for a high water table.
How do I prevent water pooling in my yard?
Keep the gutters clear, keep downspouts discharging well away from the house, turn irrigation down from June through September, and keep the swale between houses open. If the lot itself has settled flat, regrading is the lasting fix.
Raining right now? Take a photo.
Water standing where it shouldn't?
The best time to see a drainage problem is during the storm. Snap the puddle, note where the downspouts end, and send it — we schedule a free inspection within 48 hours.
(904) 561-1816Free inspection
Book your free yard inspection
Tell us where the water stands and attach a photo if you have one. We call back to set a time within 48 hours — no pressure, no sales script.
(904) 561-1816- Free yard inspection within 48 hours
- Insured · NDS-trained drainage crew
- Written price before we dig
- Mon–Sat: 7:00 AM – 7:00 PM
