Calhoun County, Mississippi
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Calhoun County, Mississippi.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Cuthbert, Dulac, and Ruston soils, 12 to 35 percent slopes (sweatman, providence and smithdale) | 94K | Well drained | C | Very limited | Very limited |
| Falaya silt loam (oaklimeter) | 42K | Moderately well drained | C | Very limited | Very limited |
| Gullied land | 26K | Very limited | Very limited | ||
| Falaya silt loam, local alluvium (oaklimeter) | 25K | Moderately well drained | C | Very limited | Very limited |
| Cuthbert, Dulac, and Ruston soils, 12 to 35 percent slopes. severely eroded (sweatman, providence and smithdale) | 25K | Well drained | C | Very limited | Very limited |
| Dulac silt loam, 5 to 8 percent slopes, severely eroded | 16K | Moderately well drained | D | Very limited | Very limited |
| Urbo silty clay loam, 0 to 2 percent slopes, occasionally flooded | 15K | Somewhat poorly drained | D | Very limited | Very limited |
| Waverly silt loam (rosebloom) | 14K | Poorly drained | C/D | Very limited | Very limited |
| Collins silt loam (oaklimeter) | 13K | Moderately well drained | C | Very limited | Very limited |
| Chastain silt loam (una) | 11K | Poorly drained | D | Very limited | Very limited |
| Chastain silty clay loam (una) | 11K | Poorly drained | D | Very limited | Very limited |
| Dulac silt loam, 8 to 12 percent slopes, severely eroded | 7K | Moderately well drained | D | Very limited | Very limited |
| Hatchie silt loam, 0 to 2 percent slopes | 7K | Somewhat poorly drained | D | Very limited | Very limited |
| Orangeburg and Eustis soils, 17 to 35 percent slopes (smithdale and troup) | 6K | Somewhat excessively drained | A | Very limited | Very limited |
| Hatchie silt loam, 2 to 5 percent slopes, eroded (bude) | 6K | Somewhat poorly drained | D | Very limited | Very limited |
| Almo silt loam (henry) | 5K | Poorly drained | C/D | Very limited | Very limited |
| Cuthbert-Dulac and Ruston soils, 8 to 12 percent slopes, severely eroded (sweatman, providence and smithdale) | 5K | Well drained | C | Somewhat limited | Very limited |
| Dulac silt loam, 5 to 8 percent slopes, eroded | 5K | Moderately well drained | D | Very limited | Very limited |
| Providence silt loam, 5 to 8 percent slopes, severely eroded | 5K | Moderately well drained | C/D | Very limited | Very limited |
| Water | 5K | Not rated | Not rated |
What This Means
Building & Foundations
About 97% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 98% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.