Greene County, Tennessee
The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high 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 Greene County, Tennessee.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Dandridge shaly silt loam, eroded rolling phase | 28K | Excessively drained | D | Very limited | Very limited |
| Dewey-Collegedale complex, 6 to 15 percent slopes, severely eroded | 21K | Well drained | B | Somewhat limited | Somewhat limited |
| Whitesburg silt loam | 18K | Moderately well drained | C | Very limited | Very limited |
| Dandridge shaly silt loam, eroded hilly phase | 15K | Excessively drained | D | Very limited | Very limited |
| Unicoi-Rock outcrop complex, 50 to 80 percent slopes | 14K | Somewhat excessively drained | D | Very limited | Very limited |
| Hamblen silt loam, 0 to 3 percent slopes, occasionally flooded | 13K | Moderately well drained | B/D | Very limited | Very limited |
| Greendale silt loam, 0 to 6 percent slopes, rarely flooded | 11K | Well drained | B | Very limited | Somewhat limited |
| Dandridge shaly silt loam, eroded steep phase | 10K | Excessively drained | D | Very limited | Very limited |
| Monongahela silt loam, undulating phase | 9K | Moderately well drained | C | Very limited | Very limited |
| Keener loam, 5 to 12 percent slopes | 8K | Well drained | B | Somewhat limited | Very limited |
| Dewey-Collegedale complex, 15 to 25 percent slopes, severely eroded | 8K | Well drained | B | Very limited | Very limited |
| Dandridge silt loam, very steep phase | 7K | Excessively drained | D | Very limited | Very limited |
| Stony hilly land, Dunmore soil material (Barfield-Rock outcrop) | 7K | Well drained | D | Very limited | Very limited |
| Bowmantown silt loam, 6 to 12 percent slopes | 7K | Moderately well drained | C | Very limited | Very limited |
| Lindside silt loam, 0 to 2 percent slopes, occasionally flooded, warm | 6K | Moderately well drained | C | Very limited | Very limited |
| Litz loam, very steep phase (Armuchee) | 5K | Well drained | C | Very limited | Very limited |
| Dewey-Collegedale complex, 6 to 15 percent slopes, moderately eroded | 5K | Well drained | B | Somewhat limited | Somewhat limited |
| Dewey-Urban land-Udorthents complex, 2 to 12 percent slopes | 5K | Well drained | B | Somewhat limited | Somewhat limited |
| Urban land-Udorthents complex | 5K | Not rated | Not rated | ||
| Needmore silty clay loam, eroded rolling phase | 5K | Well drained | C | Somewhat limited | Very limited |
What This Means
Building & Foundations
About 75% 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 76% 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.