The short answer: catch the roof water in working gutters, carry it through downspouts to a spot where the ground keeps falling away from the house, and shape the soil beside the wall so rain runs off instead of soaking in. That is how to divert water away from foundation walls on most Ohio lots, and on dense clay the surface route matters even more, because water that pools by the wall has nowhere fast to go.
What that answer cannot tell you is whether surface water is the reason your basement is wet. A free basement inspection can separate runoff from groundwater, cracks and condensation, which saves you from regrading a yard to fix a problem that comes from somewhere else.
What moving rainwater actually changes
Every downspout is a concentrated stream of roof water. If it empties at the base of the wall, the soil there gets far more water than the rest of the yard. The backfill beside a basement wall was dug out and replaced during construction, so it is often looser than the ground around it and can hold water against the foundation.
Clay makes that worse because it takes water in slowly, so rain runs across the surface or sits in the softer backfill. The soil mechanics are covered in how clay soil pushes water into a basement; this guide stays on the surface.
Soil is not uniform across Akron, or even across one lot, which is one reason two neighbors with the same gutters can have very different basements.
Where the water goes on a typical lot
Before changing anything, sort the water by source. Each one has a different fix.
| Source | What you can observe | Usual correction |
|---|---|---|
| Overflowing gutter | Splash marks or a washed-out line in the bed beside the wall | Clear or repair the gutter from the ground, or hire it out |
| Short or missing downspout extension | Soft, eroded soil and a puddle near the wall | Extension or shallow swale to a better outlet |
| Settled backfill | Soil lower right at the wall than a few feet out | Compacted soil so the ground falls away |
| Patio or walk pitched toward the house | Water lines or debris along the slab edge | Slab repair or an edge drain, usually by a pro |
| Water from a neighboring lot or street | Flow arriving from uphill in heavy storms | A swale or grading plan with a professional and the city |
Only the first three rows are typical homeowner projects.
How to divert water away from foundation walls, step by step
- Watch one real rain from a safe spot. Use a covered porch, a window or a dry path, never in lightning and never standing in deep or fast water. Note which downspouts run hardest and where water pools or travels toward the house.
- Check the gutters from the ground. Look for water spilling over the front edge, sagging sections and dripping joints. Do not climb onto the roof; if the gutters need clearing or rehanging, a gutter contractor is the safer route.
- Find every downspout outlet. Some empty onto splash blocks, some into extensions, and some disappear into a pipe in the ground. Mark each one on a sketch of the house.
- Extend the outlets that dump at the wall. A rigid extension or a short run to a shallow swale moves the stream out of the backfill zone. Aim for a spot where the ground keeps falling away, not a fixed number of feet.
- Follow the water after it leaves the extension. On flat clay it can pond and drift back. Do not aim it at a sidewalk or driveway, where it can freeze, or onto a neighbor’s lot.
- Look at the soil against the wall. Settled backfill, raised mulch beds and edging can all hold rain at the wall. Adding compacted soil so the ground slopes away is reasonable surface work. Codes set a minimum fall for new grading; ask the City of Akron building department which rule applies rather than trusting a number you read online.
- Stop before you dig deeper. Burying a downspout line, cutting a swale or regrading near utilities all count as digging. OHIO811’s homeowner page (opens in a new tab) says Ohio law requires whoever is excavating to notify OHIO811 at least two working days before digging, not counting the day of notice, and it notes that privately owned lines are the homeowner’s responsibility and may not be marked.
If a buried downspout pipe is involved, find out where it goes before you cut or reroute it. Some older homes have lines that tie into a sewer connection, so check with the City of Akron about where downspouts may discharge and about any buried connection to the sewer.
Downspout drainage on clay soil
Most advice about downspout drainage assumes the water soaks in once it reaches the lawn. On clay, it often soaks in slowly.
Published guidance from the EPA’s Soak Up the Rain page on disconnecting downspouts (opens in a new tab) describes sending roof water to a rain barrel, lawn or garden where it can soak in, and cautions that it may not suit every location. It tells homeowners to consider local regulations and where the water will go, to avoid property damage and unsafe conditions. On a tight clay lot, a rain garden or soak-in area dug into slow-draining soil can turn into a pond near the house if it is placed too close or sized without testing how fast the ground drains.
So think surface first, soak-in second. Get the water moving away from the wall, and only then consider a garden bed, kept well clear of your foundation and your neighbor’s.
Grading water away from the house without making it worse
Grading water away from the house is about the shape of the soil, not the mulch on top. A thick mulch bed heaped against the wall can look sloped and still hold water underneath. Two mistakes are common: a narrow strip of new soil that forms a ridge a few feet out and traps water against the wall, and soil piled high enough to bury the bottom of the siding, which moves the moisture problem into the wall framing.
Two example houses
These are hypothetical examples, not case results. Picture a 1920s two-story on a narrow city lot whose downspouts drop into old pipes at the corners, and nobody knows where those pipes go. The first move is a rain-day sketch, a question to the City of Akron about the old connections, and an inspection to see whether the wet spots inside match the downspout corners at all.
Now picture a 1960s ranch where the back patio has settled toward the house. Longer extensions will help a little, but the patio is the bigger route, and that usually needs a slab or drainage contractor rather than more dirt along the wall.
Field check: trace the water in the next rain
Time: 10-15 minutes during a steady rain, plus a few minutes in the basement afterward.
Tools: your phone, a notebook and a rough sketch of the house outline.
Goal: pick one safe, permitted surface-water correction, or learn that you need a professional grading or drainage review.
- Stay under cover or on dry, solid ground. If there is lightning, try another day.
- Walk the outline of the house in your sketch and mark each downspout and where its water lands.
- Mark any spot where water pools within a few feet of the wall, or flows toward the house.
- Photograph each spot with the time showing on your phone.
- After the rain, go down to the basement from a dry stair. If you see standing water near outlets, cords or appliances, stay out and contact your electric utility or 911.
- Note where dampness appears inside and how long after the rain.
Success test: you can point at the sketch and say either “this downspout and this low spot line up with the wet corner inside” or “the water inside does not match anything I saw outside.” The first points to a surface fix. The second points below ground, and that is the moment to book a free basement inspection so someone can check the footing drain, cracks and groundwater.
What does not work, and why
Sealing the inside wall to stop runoff. A coating on the inside does not change how much water sits against the outside.
Splash blocks on flat clay. A splash block spreads the stream but drops it in the same backfill zone.
Burying a flexible pipe with no outlet. A line that just ends in the lawn can fill with silt and back up at the downspout.
Expecting surface work to fix groundwater. If the water table rises toward the slab, or an old footing drain has failed, better gutters will not change that. Our guide to basement waterproofing methods covers what does address water that arrives from below. For the season-by-season list of gutter and grading chores, the spring thaw basement checklist is the place to start.
If water is already in the basement after a storm, deal with safety before drainage. The first hours are covered in what to do first when a basement floods after heavy rain .
Questions Akron homeowners ask about diverting rainwater
How far should a downspout extension carry water from my foundation?
There is no single distance that fits every Ohio lot. The extension has to reach a spot where the ground keeps falling away, so the water does not pond and creep back toward the wall. On flat clay ground that may mean a longer run, a shallow swale, or a professional drainage plan rather than a longer pipe.
Can I bury my downspouts in a pipe to get them out of the way?
You can, but it needs more care than a surface extension. A buried line needs a real outlet, steady fall and a way to clean it, and you must contact OHIO811 at least two working days before you dig. Some older houses already have buried downspout lines, and some may tie into a sewer, so check with the City of Akron before you change one.
Will fixing my gutters and grading stop my basement from leaking?
It can reduce or stop leaks that are fed by roof runoff and surface water pooling against the wall. It will not lower groundwater, repair a failed footing drain or close a structural crack. Watch the basement through a few storms after the change; if water still shows up in the same place, the source is probably below ground.
When the yard work is done and the wall is still wet
Give any drainage change a few real storms before you judge it. If the corner that used to leak stays dry, you found the route. If it doesn’t, the water is likely reaching the wall another way, and our basement waterproofing service starts with an inspection that looks at the outside drainage and the wall together before anyone recommends a system.
