Yard drainage and grading in Indiana typically costs between $1,500 and $6,000 for a regrading project, while French drains run about $20 to $45 per linear foot installed. The right solution depends on where water is collecting, the slope of the property, and Indiana's heavy clay soils, which hold water and make proper grading and drainage critical for protecting foundations and driveways.
Drainage & Grading Cost by Solution
| Solution | Typical Cost | Best For |
|---|---|---|
| Yard regrading / sloping | $1,500 – $6,000 | Standing water, negative slope |
| French drain | $20 – $45/linear ft | Subsurface water, wet yards |
| Swale / drainage ditch | $10 – $25/linear ft | Channeling surface runoff |
| Surface / catch basin drains | $1,000 – $4,000 | Low spots, downspout water |
| Downspout extensions / tie-in | $300 – $1,200 | Moving roof water away |
| Culvert / ditch crossing | $700 – $3,500 | Driveway & ditch flow |
Why Drainage Matters on Indiana Clay
Central Indiana's Crosby and Brookston clay soils drain very slowly and hold water near the surface. Without proper grading, water pools against foundations, saturates driveways, and kills lawns. Correcting drainage first — before any driveway, pad, or landscaping work — is what makes those investments last.
- •Positive slope away from the house (about 6 inches over the first 10 feet).
- •French drains to intercept subsurface and persistent water.
- •Swales to channel surface runoff to a safe outlet.
- •Catch basins for low spots that can't be graded out.
- •Culverts to carry ditch flow under driveways without backing up.
What Affects Drainage & Grading Cost
| Factor | Cost Impact |
|---|---|
| Soil type (clay/wet) | High — slow digging, more material |
| Length of drain run | High — priced per linear foot |
| Depth & outlet distance | Medium–High — more excavation |
| Amount of regrading | High — cut/fill and topsoil |
| Access & landscaping repair | Medium — restore disturbed areas |
Real Indiana Drainage & Grading Cost Examples
- •Example 1 — 80 ft French drain to a daylight outlet, Avon clay soil: about $2,600.
- •Example 2 — Regrade and re-slope a backyard with standing water, Danville: about $3,800.
- •Example 3 — Two catch basins plus downspout tie-ins, Brownsburg: about $2,100.