County soil summary
Soil types in Clermont County, Ohio
The most widespread soils are Clermont, Rossmoyne and Westboro; the most common drainage class is well drained (35% of the land), and typical topsoil pH is 5.9.
- Well or moderately well drained
- 60% of land · state 52%
- Typical topsoil pH
- 5.9 moderately acidic · state 6.2
- Septic fields very limited
- 93% of land · state 92%
- Subject to flooding
- 6% of land, any frequency · state 6%
Most common soils in Clermont County
Share of mapped land
A county is a patchwork of many soils. These 8 cover 79% of the mapped land; 52 named soil series are mapped here in all.
| Soil | Share of land | Drainage | Topsoil pH |
|---|---|---|---|
| Clermont | 15.6% | Poorly drained | 5.0 |
| Rossmoyne | 12.7% | Moderately well drained | 5.9 |
| Westboro | 10.3% | Somewhat poorly drained | 5.5 |
| Jonesboro | 9.9% | Moderately well drained | 6.7 |
| Cincinnati | 9.9% | Well drained | 5.9 |
| Edenton | 9.3% | Well drained | 6.5 |
| Schaffer | 5.9% | Somewhat poorly drained | 5.9 |
| Eden | 5.4% | Well drained | 6.0 |
What this means
What the soils in Clermont County mean for gardens, lawns and septic systems
For your garden
Typical topsoil in Clermont County is moderately acidic: pH 5.9 (most land between 5.0 and 6.7). Many vegetables grow well here, and some gardens benefit from a little lime. Test before adding any.
Loamy topsoil (loam, silt loam and similar) covers 94% of the land: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silt loam (71% of the land).
For your lawn and yard
On 84% of the land, rain soaks in slowly (hydrologic groups C and D, including dual groups that are D until drained). Expect runoff and puddles after heavy rain: core-aerate compacted lawns and keep ground sloping away from foundations.
A seasonal high water table comes within 18 inches of the surface on 34% of the land, often in spring. Basements, sump pumps and lawns in low spots feel it first.
For a septic system
For conventional septic absorption fields, NRCS rates 93% of the land in Clermont County very limited, 0% somewhat limited and <1% not limited (7% not rated, such as urban land, pits or water).
That is close to the state as a whole (92% very limited).
Where the soil is very limited (slow permeability, a high water table, flooding, shallow bedrock or steep slopes), alternative systems such as mound or sand-filter designs are common and cost more.
Flooding is mapped on 6% of the land (5% occasional, <1% frequent).
Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.
Drainage
How long the soil stays wet
The most common drainage class is well drained (35%). 60% of the land is moderately well drained or better, compared with 52% across Ohio.
Show as a table
| Category | Clermont County | Ohio |
|---|---|---|
| Excessively drained | 0.0% | 0.3% |
| Somewhat excessively drained | 0.0% | 0.2% |
| Well drained | 34.9% | 30.8% |
| Moderately well drained | 24.8% | 20.6% |
| Somewhat poorly drained | 17.1% | 22.0% |
| Poorly drained | 16.4% | 5.9% |
| Very poorly drained | 0.3% | 13.5% |
| Not rated | 6.5% | 6.7% |
Septic absorption fields
NRCS rating for conventional drain fields
The rating looks at the soil from 24 to 60 inches deep: permeability, depth to a seasonal water table or bedrock, flooding and slope. “Very limited” means at least one feature is unfavorable enough that a conventional field is hard to make work.
Show as a table
| Category | Clermont County | Ohio |
|---|---|---|
| Not limited | 0.3% | 0.2% |
| Somewhat limited | 0.0% | 1.1% |
| Very limited | 93.2% | 91.5% |
| Not rated | 6.5% | 7.2% |
Rain, runoff and water table
Hydrologic soil group, flooding, seasonal water table
Hydrologic soil group
How fast rain soaks in when the soil is already wet. Group A soaks in fastest, D slowest.
Show as a table
| Category | Clermont County | Ohio |
|---|---|---|
| A: fast infiltration (mostly sandy or gravelly) | 0.7% | 4.0% |
| B: moderate infiltration | 9.3% | 11.7% |
| C: slow infiltration | 29.4% | 18.8% |
| D: very slow infiltration (clayey, shallow or wet) | 23.0% | 22.1% |
| A/D: D as is, A if drained | 0.0% | 0.7% |
| B/D: D as is, B if drained | 1.1% | 5.2% |
| C/D: D as is, C if drained | 30.1% | 30.1% |
| Not rated | 6.5% | 7.3% |
Flooding
Show as a table
| Category | Clermont County | Ohio |
|---|---|---|
| No flooding | 91.5% | 87.5% |
| Rare or very rare | 0.0% | 0.3% |
| Occasional | 5.1% | 3.2% |
| Frequent or very frequent | 0.4% | 2.6% |
| Not reported | 3.0% | 6.4% |
Seasonal high water table
Show as a table
| Category | Clermont County | Ohio |
|---|---|---|
| Within 18 inches at some time of year | 34.4% | 49.0% |
| 18 inches to 3.3 feet | 33.6% | 15.3% |
| Deeper than 3.3 feet or none reported | 29.1% | 29.5% |
| Not reported | 3.0% | 6.3% |
Topsoil pH and texture
First mineral layer of each soil
Typical topsoil pH is 5.9 (moderately acidic); 80% of rated land falls between 5.0 and 6.7. Median topsoil organic matter is 2%.
Show as a table
| Category | Clermont County | Ohio |
|---|---|---|
| Strongly acidic (below 5.5) | 17.3% | 19.5% |
| Moderately to slightly acidic (5.5–6.4) | 41.9% | 48.5% |
| Near neutral (6.5–7.3) | 31.1% | 23.0% |
| Alkaline (7.4 and up) | 3.2% | 1.5% |
| Not reported | 6.5% | 7.5% |
Texture
Show as a table
| Category | Clermont County | Ohio |
|---|---|---|
| Sandy | 0.0% | 1.2% |
| Loamy (loam, silt loam and similar) | 93.5% | 88.3% |
| Clayey (40%+ clay) | 0.0% | 2.9% |
| Organic (muck or peat) | 0.0% | 0.3% |
| Not reported (rock, urban land, etc.) | 6.5% | 7.3% |
Sources & data dates
- Source
- USDA NRCS Soil Survey Geographic Database (SSURGO), queried through Soil Data Access. Public domain.
- Data date
- SSURGO as published on November 3, 2026 (most recent survey area update October 26, 2026). NRCS refreshes SSURGO each October.
- Scope
- Clermont County, Ohio (FIPS 39025): 289,386 acres of mapped land, 5,021 acres of open water excluded. State comparisons pool all mapped land in Ohio.
- Method
- Shares are by mapped land area: each map unit’s acres in the county times each soil component’s percentage. Open water is excluded. Topsoil values use the first mineral horizon of each component. Full methodology.