Soil series profile
Stough soil series
Stough is a somewhat poorly drained soil with a fine sandy loam surface, mapped on 454,268 acres in 55 counties across 4 states. Hydrologic group C/D.
- Drainage class
- Somewhat poorly drained >99% of mapped acres
- Hydrologic group
- C/D 96% of mapped acres
- Typical topsoil pH
- 5.0 very strongly acidic · range 5.0–5.0
- Mapped area
- 454k acres in 55 counties, 4 states
Typical Stough profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–3 in (A) | Fine sandy loam | 5.0 | 10% | 64% | 2.5% |
| 3–6 in (E) | Fine sandy loam | 5.0 | 10% | 64% | 1.5% |
| 6–15 in (Bt) | Loam | 4.5 | 12% | 50% | 1% |
| 15–29 in (Btx1) | Loam | 4.5 | 17% | 47% | 0.3% |
| 29–70 in (Btx2) | Sandy clay loam | 4.5 | 26% | 55% | 0.25% |

What this means
What Stough soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Stough 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 97% of mapped Stough acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is fine sandy loam (83% of mapped Stough acres).
>99% of mapped Stough 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 97% 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 97% of the acres in mapped Stough soils very limited, 0% somewhat limited and 0% not limited (3% not rated, such as urban land, pits or water).
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 18% of the acres (10% occasional, <1% frequent).
Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.
Where Stough soil is found
Mapped acres
Stough is mapped in Mississippi, Louisiana, Arkansas and Alabama.
| County | Acres | Share of county land |
|---|---|---|
| St. Tammany Parish, LA | 83,318 | 15.3% |
| Grant County, AR | 45,478 | 11.3% |
| Smith County, MS | 22,383 | 5.6% |
| Cleveland County, AR | 22,013 | 5.8% |
| Hot Spring County, AR | 16,443 | 4.2% |
| Bradley County, AR | 15,476 | 3.7% |
| Monroe County, MS | 15,113 | 3.2% |
| Washington Parish, LA | 14,634 | 3.4% |
| Marion County, MS | 14,341 | 4.3% |
| Clarke County, MS | 13,702 | 3.2% |
| Noxubee County, MS | 13,565 | 3.1% |
| Clark County, AR | 11,962 | 2.2% |
| Kemper County, MS | 11,513 | 2.9% |
| Wayne County, MS | 9,313 | 1.9% |
| Perry County, MS | 9,106 | 2.3% |
| Simpson County, MS | 8,993 | 2.5% |
| Jasper County, MS | 8,387 | 2.0% |
| Greene County, MS | 8,351 | 1.8% |
| Fayette County, AL | 8,250 | 2.4% |
| Tangipahoa Parish, LA | 7,913 | 1.6% |
| Oktibbeha County, MS | 7,427 | 2.6% |
| Clay County, MS | 7,421 | 2.9% |
| Livingston Parish, LA | 7,176 | 1.7% |
| Leake County, MS | 6,170 | 1.7% |
| Covington County, MS | 6,109 | 2.4% |
| Pike County, MS | 5,746 | 2.3% |
| Marion County, AL | 5,580 | 1.4% |
| Winston County, MS | 4,516 | 1.2% |
| Neshoba County, MS | 4,240 | 1.2% |
| Scott County, MS | 4,031 | 1.0% |
| Jackson County, MS | 3,874 | 0.9% |
| Forrest County, MS | 3,845 | 1.4% |
| Monroe County, AL | 3,519 | 0.6% |
| Jones County, MS | 2,824 | 0.7% |
| Walthall County, MS | 2,796 | 1.1% |
| Greene County, AL | 2,733 | 0.8% |
| Jefferson Davis County, MS | 1,894 | 0.8% |
| Webster County, MS | 1,593 | 0.6% |
| Lamar County, MS | 1,590 | 0.5% |
| Attala County, MS | 1,563 | 0.3% |
| Elmore County, AL | 1,526 | 0.4% |
| Harrison County, MS | 1,398 | 0.4% |
| Choctaw County, MS | 1,302 | 0.5% |
| Hancock County, MS | 1,151 | 0.4% |
| Lauderdale County, MS | 902 | 0.2% |
| St. Helena Parish, LA | 694 | 0.3% |
| Rankin County, MS | 589 | 0.1% |
| George County, MS | 376 | 0.1% |
| Lawrence County, MS | 358 | 0.1% |
| Drew County, AR | 258 | 0.0% |
| Lee County, MS | 235 | 0.1% |
| Pearl River County, MS | 214 | 0.0% |
| Saline County, AR | 171 | 0.0% |
| Montgomery County, AL | 145 | 0.0% |
| Chickasaw County, MS | 48 | 0.0% |
Septic absorption fields
NRCS rating, share of Stough acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 0.0% |
| Very limited | 96.8% |
| Not rated | 3.2% |
Drainage, water table and flooding
Share of Stough acres
- Depth to seasonal high water table
- About 1.0 feet (12 in) (median where reported); within 18 inches on >99% of acres.
- Flooding
- Mapped as flooding on 18% of acres (10% occasional, <1% frequent).
- Slope
- Typically 0–2% (median 1%).
- Topsoil organic matter
- Median 2.5%.
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 | 99.4% |
| Poorly drained | 0.0% |
| Very poorly drained | 0.0% |
| Not rated | 0.6% |
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 | 0.9% |
| 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 | 96.2% |
| Not rated | 2.9% |
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 Stough (component kind "Series") in SSURGO: 454,268 acres.
- Method
- Shares are by mapped acres of Stough components. The profile comes from the single largest Stough component. Full methodology.