Soil series profile
McLaurin soil series
McLaurin is a well drained soil with a fine sandy loam surface, mapped on 562,029 acres in 45 counties across 4 states. Hydrologic group B.
- Drainage class
- Well drained 100% of mapped acres
- Hydrologic group
- B 98% of mapped acres
- Typical topsoil pH
- 5.0 very strongly acidic · range 5.0–5.5
- Mapped area
- 562k acres in 45 counties, 4 states
Typical McLaurin profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–6 in (A) | Fine sandy loam | 5.5 | 15% | 60% | 2% |
| 6–14 in (BE) | Sandy loam | 5.0 | 16% | 60% | 0.6% |
| 14–80 in (Bt) | Sandy loam | 4.5 | 17% | 65% | 0.15% |
What this means
What McLaurin soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in McLaurin soils is very strongly acidic: pH 5.0 (most land between 5.0 and 5.5). 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 72% of mapped McLaurin acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is fine sandy loam (56% of mapped McLaurin acres).
100% of mapped McLaurin acres is moderately well to excessively drained, which suits most garden plants.
For lawns and yards
Most land is in hydrologic groups B and C, where rain soaks in at a moderate pace.
For a septic system
For conventional septic absorption fields, NRCS rates <1% of the acres in mapped McLaurin soils very limited, 98% somewhat limited and 0% not limited (2% not rated, such as urban land, pits or water).
Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.
Where McLaurin soil is found
Mapped acres
McLaurin is mapped in Mississippi, Louisiana, Alabama and Arkansas.
| County | Acres | Share of county land |
|---|---|---|
| Lamar County, MS | 111,240 | 36.4% |
| George County, MS | 55,900 | 19.0% |
| Stone County, MS | 54,885 | 20.1% |
| Perry County, MS | 48,593 | 12.0% |
| Forrest County, MS | 48,572 | 17.3% |
| Pearl River County, MS | 36,763 | 8.0% |
| Greene County, MS | 34,504 | 7.6% |
| Jones County, MS | 27,302 | 6.4% |
| Wayne County, MS | 25,415 | 5.2% |
| Jackson Parish, LA | 17,037 | 4.7% |
| Webster Parish, LA | 11,124 | 2.9% |
| Jasper County, MS | 10,706 | 2.6% |
| Chilton County, AL | 10,503 | 2.7% |
| Bienville Parish, LA | 9,310 | 1.8% |
| Harrison County, MS | 7,200 | 1.9% |
| Jefferson Davis County, MS | 6,789 | 2.8% |
| Washington County, AL | 6,466 | 1.0% |
| Lincoln Parish, LA | 6,387 | 2.1% |
| Marion County, MS | 6,248 | 1.9% |
| Hancock County, MS | 4,417 | 1.5% |
| Lauderdale County, MS | 3,973 | 1.1% |
| Claiborne Parish, LA | 3,674 | 0.8% |
| Union Parish, LA | 3,613 | 0.6% |
| Grant Parish, LA | 3,370 | 0.8% |
| Clarke County, MS | 1,583 | 0.4% |
| Walthall County, MS | 790 | 0.3% |
| Jackson County, MS | 785 | 0.2% |
| Clark County, AR | 718 | 0.1% |
| Lawrence County, MS | 699 | 0.3% |
| Vernon Parish, LA | 665 | 0.1% |
| Covington County, MS | 655 | 0.3% |
| Natchitoches Parish, LA | 573 | 0.1% |
| Simpson County, MS | 449 | 0.1% |
| Mobile County, AL | 335 | 0.0% |
| Choctaw County, AL | 153 | 0.0% |
| Sabine Parish, LA | 135 | 0.0% |
| Hot Spring County, AR | 129 | 0.0% |
| Winston County, MS | 105 | 0.0% |
| Caddo Parish, LA | 80 | 0.0% |
| Noxubee County, MS | 78 | 0.0% |
| Neshoba County, MS | 60 | 0.0% |
| Red River Parish, LA | 15 | 0.0% |
| Smith County, MS | 15 | 0.0% |
| Monroe County, MS | 10 | 0.0% |
| Pike County, MS | 7 | 0.0% |
Septic absorption fields
NRCS rating, share of McLaurin acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 97.8% |
| Very limited | 0.7% |
| Not rated | 1.5% |
Drainage, water table and flooding
Share of McLaurin acres
- Depth to seasonal high water table
- None reported within about 6.5 feet (median where reported).
- Flooding
- Not mapped as flooding on most acres.
- Slope
- Typically 2–7% (median 4%).
- Topsoil organic matter
- Median 2%.
Drainage class
Show as a table
| Category | Share of acres |
|---|---|
| Excessively drained | 0.0% |
| Somewhat excessively drained | 0.0% |
| Well drained | 100.0% |
| Moderately well drained | 0.0% |
| Somewhat poorly drained | 0.0% |
| Poorly drained | 0.0% |
| Very poorly drained | 0.0% |
Hydrologic soil group
Show as a table
| Category | Share of acres |
|---|---|
| A: fast infiltration (mostly sandy or gravelly) | 0.2% |
| B: moderate infiltration | 98.2% |
| 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 | 0.0% |
| Not rated | 1.5% |
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 McLaurin (component kind "Series") in SSURGO: 562,029 acres.
- Method
- Shares are by mapped acres of McLaurin components. The profile comes from the single largest McLaurin component. Full methodology.