Calhoun and Dallas Counties, Arkansas
The dominant drainage class is Poorly drained and the dominant hydrologic group is C/D (varies with drainage). 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 and Dallas Counties, Arkansas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Guyton silt loam, 0 to 1 percent slopes, frequently flooded | 197K | Poorly drained | C/D | Very limited | Very limited |
| Amy silt loam, 0 to 1 percent slopes | 117K | Poorly drained | C/D | Very limited | Very limited |
| Smithton fine sandy loam, 0 to 2 percent slopes | 90K | Poorly drained | C/D | Very limited | Very limited |
| Pheba silt loam, 0 to 2 percent slopes | 52K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Savannah fine sandy loam, 1 to 3 percent slopes | 49K | Moderately well drained | C | Very limited | Very limited |
| Pikeville fine sandy loam, 3 to 8 percent slopes | 26K | Well drained | B | Not limited | Very limited |
| Smithton-Pheba association | 23K | Poorly drained | C/D | Very limited | Very limited |
| Savannah fine sandy loam, 3 to 8 percent slopes | 23K | Moderately well drained | C | Very limited | Very limited |
| Sacul-Smithdale association, gently rolling | 21K | Moderately well drained | D | Somewhat limited | Very limited |
| Smithdale fine sandy loam, 3 to 8 percent slopes | 21K | Well drained | B | Not limited | Very limited |
| Sacul-Sawyer association, gently rolling | 21K | Moderately well drained | D | Somewhat limited | Very limited |
| Pheba-Savannah association, gently rolling | 20K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Sacul fine sandy loam, 3 to 8 percent slopes | 19K | Moderately well drained | D | Somewhat limited | Very limited |
| Pikeville fine sandy loam, 8 to 12 percent slopes | 18K | Well drained | B | Somewhat limited | Very limited |
| Ruston fine sandy loam, 1 to 3 percent slopes | 16K | Well drained | B | Not limited | Somewhat limited |
| Smithdale-Sacul association, rolling | 16K | Well drained | B | Somewhat limited | Very limited |
| Ouachita silt loam, 0 to 1 percent slopes, frequently flooded | 16K | Well drained | C | Very limited | Very limited |
| Sacul association, rolling | 11K | Moderately well drained | D | Somewhat limited | Very limited |
| Pikeville association, rolling | 11K | Well drained | B | Somewhat limited | Very limited |
| Water | 11K | D | Not rated | Not rated |
What This Means
Building & Foundations
About 75% of soils are rated "very limited" for dwellings with basements. Specific challenges include poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 96% of soils are rated "very limited" for septic absorption fields. Poorly drained soils can't absorb septic effluent effectively. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Many soils hold water for extended periods. Raised beds are highly recommended to improve drainage for vegetables. Well-adapted native plants and water-loving species will do best in natural conditions.