If water pools because your ground slopes toward the house or sits in a low spot, regrading (reshaping the surface so water runs away) is usually the fix. If water is coming from below — a persistently soggy area, a high water table, or runoff you can’t slope away — a French drain (a gravel-filled trench with a perforated pipe that collects and carries water off) is the better tool. Many Connecticut yards need both: regrade the surface, then add a French drain where water still collects.
How to tell which you need
Signs regrading is the answer:
- Water runs toward your foundation after rain.
- There’s an obvious low spot or a negative slope near the house.
- The soil is otherwise reasonably draining once water can escape.
Signs a French drain is the answer:
- A specific area stays soggy long after the rain stops.
- Water surfaces at the base of a slope or wall.
- You can’t regrade because of a patio, driveway, mature trees, or a property line in the way.
- You have a wet basement or crawlspace fed by groundwater.
You likely need both when the surface slopes wrong and a stubborn wet area remains after regrading — common on flat lots and near Connecticut’s wetlands and higher water tables.
Comparison
| Regrading | French drain | |
|---|---|---|
| What it does | Reshapes the ground so surface water flows away | Collects subsurface/surface water and pipes it to a safe outlet |
| Best for | Wrong slope, low spots, water toward the house | Persistent soggy areas, groundwater, spots you can’t regrade |
| Typical cost (benchmark) | Priced by soil moved and access — no single per-foot number; often bundled with other work | ~$10–$35 per linear foot for exterior yard drains; more for deep/perimeter drains |
| Disruption | Reshapes lawn/beds; may need reseeding/sod | Trenching along the drain line |
| Limits | Can’t fix true groundwater problems | Needs a viable outlet (daylight, dry well, or storm connection) |
French-drain benchmark: LawnLove/Angi 2026. Regrading is not quoted per-unit here because it depends on soil volume, access, and scope — get a site-specific estimate.
Other drainage tools that often come up
A good drainage plan is rarely one product. Depending on the site, the right fix may also include:
- Downspout extensions / buried leaders to move roof water away before it ever hits the yard.
- Dry wells where there’s no downhill outlet to daylight.
- Catch basins / channel drains for hardscape and low collection points.
- Swales — shallow shaped channels that guide water across a property.
Connecticut site conditions that affect the decision
- Rocky, clay-heavy glacial soils drain slowly, which pushes more projects toward a French drain or dry well.
- Flat lots and high water tables near wetlands and the shoreline make surface regrading alone insufficient.
- Wetlands rules: work in or near a regulated wetland or watercourse can require an inland-wetlands permit, and rules are set town by town. Confirm with your municipal inland-wetlands/zoning office before disturbing soil near water.
- Freeze-thaw means outlets and pipe slope must be set so lines don’t hold water and heave.
Questions to ask before you hire
- Have you identified where the water is actually coming from, not just where it shows up?
- Where will the water go — daylight, a dry well, or a storm connection?
- Will regrading disturb my lawn or plantings, and is restoration included?
- Do we need an inland-wetlands or zoning sign-off for this location?
- How do you keep the outlet from freezing or clogging?
Frequently asked questions
Will a French drain fix water running toward my house?
Not on its own. If the ground slopes toward the foundation, that slope should be corrected first; a French drain then handles whatever water still collects.
Do French drains stop working over time?
They can clog with silt or roots if built without a filter fabric and a clean outlet. Proper materials and a maintainable outlet are what make one last.
Can I just add gutters and downspout extensions?
Sometimes that’s enough — roof water is a huge source of yard flooding. It’s the cheapest thing to try first, and a good contractor will tell you if that solves it before selling you a bigger system.
Is a permit required?
Regrading and drains near wetlands or watercourses can require local approval, and rules vary by town. Confirm with your municipality first.
Have a wet yard or a soggy basement?
The fix starts with finding where the water comes from. Book a drainage assessment or call (203) 490-7040. Learn more about our drainage services; drainage also matters behind a wall — see retaining wall costs.
Sources
- LawnLove — French Drain Cost (2026)
- Angi — French Drain Cost (2026)