Dickson County, Tennessee
The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 Dickson County, Tennessee.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Sengtown gravelly silt loam, 5 to 12 percent slopes | 68K | Well drained | B | Somewhat limited | Somewhat limited |
| Sengtown gravelly silt loam, 30 to 60 percent slopes | 60K | Well drained | B | Very limited | Very limited |
| Sengtown gravelly silt loam, 12 to 20 percent slopes | 44K | Well drained | B | Very limited | Very limited |
| Hawthorne-Sulphura association, 20 to 60 percent slopes | 37K | Somewhat excessively drained | B | Very limited | Very limited |
| Lax silt loam, 5 to 12 percent slopes | 10K | Moderately well drained | C | Very limited | Very limited |
| Saffell gravelly fine sandy loam, 20 to 60 percent slopes | 8K | Well drained | B | Very limited | Very limited |
| Dickson silt loam, 2 to 5 percent slopes | 6K | Moderately well drained | C/D | Very limited | Very limited |
| Sengtown-Urban land complex, 2 to 12 percent slopes | 6K | Not rated | Not rated | ||
| Armour silt loam, 2 to 5 percent slopes, gravelly substratum | 6K | Well drained | B | Not limited | Very limited |
| Mountview silt loam, 5 to 12 percent slopes, eroded | 6K | Well drained | B | Somewhat limited | Somewhat limited |
| Saffell gravelly fine sandy loam, 12 to 20 percent slopes | 6K | Well drained | B | Very limited | Very limited |
| Armour silt loam, 5 to 12 percent slopes | 5K | Well drained | B | Somewhat limited | Very limited |
| Mountview silt loam, 2 to 5 percent slopes | 5K | Moderately well drained | C | Very limited | Very limited |
| Humphreys gravelly silt loam, 2 to 5 percent slopes | 4K | Well drained | A | Somewhat limited | Very limited |
| Sengtown gravelly silt loam, 5 to 12 percent slopes | 4K | Well drained | B | Not limited | Somewhat limited |
| Sengtown-Rock outcrop complex, 20 to 60 percent slopes | 4K | Well drained | B | Very limited | Very limited |
| Armour silt loam, 0 to 2 percent slopes, gravelly substratum, occasionally flooded | 4K | Well drained | B | Very limited | Very limited |
| Lax silt loam, 2 to 5 percent slopes | 3K | Moderately well drained | C | Very limited | Very limited |
| Hawthorne-Sugargrove complex, 5 to 12 percent slopes | 3K | Somewhat excessively drained | B | Somewhat limited | Very limited |
| Minvale gravelly silt loam, 5 to 12 percent slopes | 3K | Well drained | B | Somewhat limited | Somewhat limited |
What This Means
Building & Foundations
About 63% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 70% 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.