Yard drainage solutions: which one matches the problem you actually have
Seven solutions, three problems, and one question that decides most of it: does your soil accept water, or doesn't it?
There are only four moves in yard drainage, and they are not interchangeable. You can redirect water so it travels somewhere else (regrading, a swale. You can collect and convey it) a catch basin and solid pipe to a discharge point.
You can store and infiltrate it. A dry well, a rain garden. Or you can generate less of it, by replacing sealed surfaces with permeable ones. Choosing the wrong move is the usual reason an expensive yard drainage job leaves the same puddle in the same place.
The choice isn't a matter of taste. It follows from which of three quite different problems you actually have.
Which of the three problems do you have?
Water is arriving. It runs onto your property from higher ground, a neighboring lot, a driveway or a road. And it has to cross your yard to get anywhere. Storing it is pointless. More keeps coming. This is a redirect problem.
Water is concentrating. It falls on your own property and gets funneled: hard surfaces shedding everything they receive, discharge points landing in one spot, a slope that gathers. The total volume is normal; the distribution is not. This is a spread-it-out or convey-it problem.
Water isn't leaving. It falls, it sits, and two days later it is still sitting. Nothing is arriving from anywhere: the ground simply is not accepting it. Tight clay, soil compacted flat by construction traffic, a high water table, a hardpan layer a foot down. This is the problem where infiltration-based solutions quietly fail, because every one of them depends on the soil doing something it is not doing.
Telling them apart takes two observations and no equipment. During heavy rain, go outside and watch. You will see within a minute whether water is arriving from off your lot or being generated on it. After the rain stops, time the puddle. Gone within a few hours means the soil is working and you have a flow problem. Still standing the next day means the soil is not, and you have an infiltration problem. And that changes which half of the table below is available to you.
What does each solution actually do?
| Solution | What it does | When it's the right answer | How it fails |
|---|---|---|---|
| Regrading | Changes which way the surface falls | Water ponding against something you care about | Moves the problem downhill if there is nowhere for it to go |
| Swale | A shallow, planted channel carrying surface water along a chosen line | Water crossing the property from higher ground | Gets filled in, flattened or planted over, and stops carrying |
| Catch basin and solid pipe | Collects water at a low point and pipes it away | A defined low spot, with somewhere legitimately lower to discharge to | Grate silts up; pipe laid without fall; the outlet ends up underwater |
| French drain | Intercepts water moving through the ground | Saturated soil, or a slope feeding water in below the surface | Installed where the problem was surface water, and fills with fines |
| Dry well | Buries a void that holds runoff while it soaks away | Modest volumes, in soil that infiltrates | Soil that doesn't infiltrate: then it is a buried bucket that stays full |
| Rain garden | A planted depression that holds water briefly and lets it soak | Runoff from paving and discharge points, in draining soil | Sited in the wettest, tightest corner of the yard, which is where it cannot work |
| Permeable paving | Lets a hard surface absorb rather than shed | Replacing a drive or patio that is generating the runoff | Clogs over the years without maintenance; needs a draining subgrade underneath |
Note how many of them have the same failure mode written differently: the soil did not cooperate, or the water had nowhere to go. Those are the two questions worth settling before anyone quotes anything.
Does your soil actually accept water?
Three of the seven depend entirely on infiltration, so find out what you are sitting on before you dig. Two checks cost nothing. The USDA's Web Soil Survey maps soil properties (including drainage class) down to parcel level across most of the country, which tells you what to expect. Then a hole in the ground, filled with water, tells you what is actually true in your yard. That can differ sharply from the map where a builder compacted or replaced the topsoil.
Where the soil does not infiltrate, the honest answer is that you have to convey rather than store. Which raises the question people skip.
Where is the water going to end up?
Every collect-and-convey solution ends somewhere, and that endpoint is the part most often left vague until the trench is open. The legitimate options are daylighting at a lower point on your own property, or connecting to a storm system where your jurisdiction permits it. Two things are not options: discharging onto a neighbor's land, and connecting into a sanitary sewer.
What is allowed, what needs a permit, and what has to stay on site varies by jurisdiction and sometimes by street. A growing number of places require stormwater to be retained on the property rather than discharged at all, which flips the whole design. Your local building department or stormwater authority settles this in one call. Make that call before the digging, not after.
And before any trench at all: call 811. Utility locating is free, it applies in every state. And drainage trenches run at exactly the depth where buried services live.
What does this have to do with the basement?
Yard drainage belongs on this site because it is the cheapest lever available on water at the foundation. It is also the one most often skipped in favor of something expensive happening indoors. The first move is nearly always the dull one (which way the ground falls, and where discharge lands). The solutions above are what you reach for when that is genuinely not enough.
There is a useful corollary. If the yard is right and the basement is still wet, the water is not coming from the surface. And you have learned something that saves you from buying the wrong repair. That is the point at which the repair options start being worth reading.
Frequently asked questions
Is a French drain the same thing as yard drainage?
No: it is one solution among several, and a fairly specific one. A French drain intercepts water moving through the ground; it is not the answer to surface water standing on top of it. The two get confused constantly, which is why so many of them end up installed where they cannot help.
Will a dry well work in clay soil?
Generally not as a standing solution. A dry well works by letting stored water soak into the surrounding soil, so in ground that does not infiltrate it simply stays full and then overflows in the next storm. In tight soil the money is better spent conveying the water somewhere than storing it.
How long should water stand in a yard after rain?
There is no national figure, but the rule of thumb is useful: gone within a few hours means the ground is draining and you have a flow problem, while still standing the following day means the ground is not draining and you have an infiltration problem. The two need opposite solutions.
Can I just pipe the water out to the street?
That depends entirely on your jurisdiction, and it is not a detail. Some places allow a storm connection, some require a permit for it, and some require stormwater to be kept on the property. Your local building department or stormwater authority is the only reliable answer.
Do I need a permit for yard drainage work?
For a shallow regrade or a planted swale within your own property, often not. For anything that discharges off the property, connects to a public system, or changes site drainage significantly, usually yes. Ask before the work, because a retrofit permit is the expensive kind.
Sources
What this page explains is based on these official sources. If you check one and it does not match what you read here, send it to us and the article gets corrected.
- US EPA. What You Can Do to Soak Up the Rain
- US EPA. Soak Up the Rain: Rain Gardens
- USDA NRCS. Web Soil Survey. Mapped soil properties, including drainage class
- Common Ground Alliance. 811. Call before you dig