Hamblen 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 Hamblen County, Tennessee.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Dewey-Collegedale complex, 6 to 15 percent slopes, moderately eroded | 10K | Well drained | B | Somewhat limited | Somewhat limited |
| Water | 9K | Not rated | Not rated | ||
| Dewey-Urban land-Udorthents complex, 2 to 12 percent slopes | 8K | Well drained | B | Somewhat limited | Somewhat limited |
| Dewey-Collegedale complex, 15 to 25 percent slopes, moderately eroded | 6K | Well drained | B | Very limited | Very limited |
| Urban land-Udorthents complex | 5K | Not rated | Not rated | ||
| Litz shaly silt loam, steep, 25 to 55 percent slope | 5K | Well drained | C | Very limited | Very limited |
| Dandridge shaly silty clay loam, hilly, 12 to 25 percent slope | 4K | Excessively drained | D | Very limited | Very limited |
| Dandridge shaly silty clay loam, steep, 25 to 60 percent slope | 4K | Excessively drained | D | Very limited | Very limited |
| Dandridge shaly silty clay loam, rolling, 5 to 12 percent slope | 4K | Excessively drained | D | Very limited | Very limited |
| Fullerton gravelly silt loam, 5 to 12 percent slopes | 4K | Well drained | B | Somewhat limited | Somewhat limited |
| Dewey silty clay loam, 6 to 15 percent slopes | 3K | Well drained | B | Somewhat limited | Somewhat limited |
| Talbott very rocky, hilly, 12 to 25 percent slope | 3K | Well drained | C | Very limited | Very limited |
| Talbott very rocky, rolling, 5 to 12 percent slope | 3K | Well drained | C | Very limited | Very limited |
| Fullerton gravelly silt loam, 15 to 25 percent slopes | 3K | Well drained | B | Very limited | Very limited |
| Talbott very rocky, steep, 25 to 50 percent slope | 3K | Well drained | C | Very limited | Very limited |
| Talbott silty clay loam, rolling, 5 to 12 percent slope | 3K | Well drained | C | Very limited | Very limited |
| Hamblen silt loam, 0 to 2 percent slopes, occasionally flooded, hydric minor component | 2K | Moderately well drained | B/D | Very limited | Very limited |
| Litz shaly silt loam, hilly, 12 to 25 percent slope | 2K | Well drained | C | Very limited | Very limited |
| Groseclose silt loam, rolling, 5 to 12 percent slope | 2K | Well drained | C | Very limited | Very limited |
| Fullerton gravelly silt loam, 25 to 60 percent slopes | 2K | Well drained | B | Very limited | Very limited |
What This Means
Building & Foundations
About 54% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 54% 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.