Soil series profile
Clermont soil series
Clermont is a poorly drained soil with a silt loam surface, mapped on 181,414 acres in 9 counties in OH. Hydrologic group C/D.
- Drainage class
- Poorly drained >99% of mapped acres
- Hydrologic group
- C/D >99% of mapped acres
- Typical topsoil pH
- 5.0 very strongly acidic · range 5.0–5.0
- Mapped area
- 181k acres in 9 counties, 1 state
Typical Clermont profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–7 in (Ap) | Silt loam | 5.0 | 20% | 11% | 1.5% |
| 7–15 in (Eg) | Silt loam | 4.6 | 20% | 11% | 0.75% |
| 15–31 in (B/E) | Silty clay loam | 4.6 | 28% | 7% | 0.5% |
| 31–56 in (2Btg) | Silty clay loam | 5.9 | 35% | 20% | 0.3% |
| 56–79 in (2Bt) | Clay loam | 5.9 | 35% | 22% | 0.2% |

What this means
What Clermont soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Clermont soils is very strongly acidic: pH 5.0. Most vegetables and lawn grasses do best around 6.0 to 7.0, so lime is often needed; blueberries, azaleas and rhododendrons like it as it is.
Loamy topsoil (loam, silt loam and similar) covers >99% of mapped Clermont acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silt loam (>99% of mapped Clermont acres).
>99% of mapped Clermont acres is somewhat poorly to very poorly drained, so soil stays soggy for long spells after rain and in wet seasons. Raised beds, plants that tolerate wet feet, and not working the soil while wet all help.
For lawns and yards
On >99% of mapped acres, 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 >99% of mapped acres, 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 >99% of the acres in mapped Clermont soils very limited, 0% somewhat limited and 0% not 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.
Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.
Where Clermont soil is found
Mapped acres
Clermont is mapped in Ohio.
| County | Acres | Share of county land |
|---|---|---|
| Brown County, OH | 66,610 | 21.2% |
| Clermont County, OH | 45,260 | 15.6% |
| Highland County, OH | 32,275 | 9.1% |
| Warren County, OH | 18,523 | 7.3% |
| Clinton County, OH | 17,991 | 6.9% |
| Hamilton County, OH | 302 | 0.1% |
| Ross County, OH | 300 | 0.1% |
| Adams County, OH | 146 | 0.0% |
| Butler County, OH | 7 | 0.0% |
Septic absorption fields
NRCS rating, share of Clermont acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 0.0% |
| Very limited | 99.8% |
| Not rated | 0.2% |
Drainage, water table and flooding
Share of Clermont acres
- Depth to seasonal high water table
- About 0 inches (median where reported); within 18 inches on >99% of acres.
- Flooding
- Not mapped as flooding on most acres.
- Slope
- Typically 0–0% (median 0%).
- Topsoil organic matter
- Median 1.5%.
Drainage class
Show as a table
| Category | Share of acres |
|---|---|
| Excessively drained | 0.0% |
| Somewhat excessively drained | 0.0% |
| Well drained | 0.0% |
| Moderately well drained | 0.0% |
| Somewhat poorly drained | 0.0% |
| Poorly drained | 99.8% |
| Very poorly drained | 0.0% |
| Not rated | 0.2% |
Hydrologic soil group
Show as a table
| Category | Share of acres |
|---|---|
| A: fast infiltration (mostly sandy or gravelly) | 0.0% |
| B: moderate infiltration | 0.0% |
| C: slow infiltration | 0.0% |
| D: very slow infiltration (clayey, shallow or wet) | 0.0% |
| A/D: D as is, A if drained | 0.0% |
| B/D: D as is, B if drained | 0.0% |
| C/D: D as is, C if drained | 99.8% |
| Not rated | 0.2% |
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
- All map unit components named Clermont (component kind "Series") in SSURGO: 181,414 acres.
- Method
- Shares are by mapped acres of Clermont components. The profile comes from the single largest Clermont component. Full methodology.