Trousdale County, Tennessee
The most common soil here is Mimosa, on about 21% of the land: a silt loam, smooth, like flour. Barfield and Ashwood come next.
About 86% of the land drains well; groundwater comes within two feet of the surface under 6% of it.
USDA rates 89% of the land very limited for a standard septic drain field, and 64% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 11% of the land floods occasionally or more, and bedrock lies within 40 inches under 38% of it.
Soils change over short distances, so look up an address below for the soil at that exact spot and the reasons behind each rating.
The soils you're most likely standing on
The biggest named soils in Trousdale County, Tennessee, each drawn five feet deep from its official USDA description, in its recorded colors.
Dots mark gravel; white flecks mark lime. Shares are by acres across the survey area, and each mapped patch usually mixes several of these soils.
The biggest mapped areas
The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). The most common soil order is Alfisols — moderately leached forest soils with a clay-enriched subsoil. 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 Trousdale County, Tennessee. Search your address to find the exact soil composition, drainage, and series details at your specific location.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Barfield-Ashwood-Rock outcrop complex, 20 to 50 percent slopes | 9K | Well drained | D | Very limited | Very limited |
| Barfield-Ashwood-Rock outcrop complex, 5 to 20 percent slopes | 7K | Well drained | D | Very limited | Very limited |
| Mimosa silt loam, 5 to 20 percent slopes, eroded, very rocky | 6K | Well drained | C | Somewhat limited | Very limited |
| Mimosa silt loam, 5 to 12 percent slopes, eroded | 5K | Well drained | C | Somewhat limited | Very limited |
| Mimosa silty clay, 8 to 20 percent slopes, severely eroded | 3K | Well drained | C | Somewhat limited | Very limited |
| Arrington silt loam, 0 to 2 percent slopes, occasionally flooded | 3K | Well drained | B | Very limited | Very limited |
| Inman flaggy silty clay loam, 20 to 30 percent slopes, eroded | 3K | Well drained | C | Very limited | Very limited |
| Harpeth silt loam, 5 to 10 percent slopes, eroded | 2K | Well drained | B | Not limited | Somewhat limited |
| Mimosa-Rock outcrop complex, 20 to 40 percent slopes | 2K | Well drained | C | Very limited | Very limited |
| Talbott silt loam, 3 to 10 percent slopes, rocky | 2K | Well drained | C | Very limited | Very limited |
| Barfield-Rock outcrop complex, 5 to 20 percent slopes | 2K | Well drained | D | Very limited | Very limited |
| Harpeth silt loam, 2 to 5 percent slopes, eroded | 2K | Well drained | B | Not limited | Somewhat limited |
| Lindell silt loam, 0 to 2 percent slopes, occasionally flooded | 2K | Moderately well drained | B/D | Very limited | Very limited |
| Sulphura channery silt loam, 25 to 55 percent slopes | 2K | Somewhat excessively drained | B | Very limited | Very limited |
| Water | 2K | Not rated | Not rated | ||
| Armour silt loam, 2 to 5 percent slopes | 2K | Well drained | B | Not limited | Very limited |
| Dellrose gravelly silt loam, 20 to 30 percent slopes, eroded | 2K | Well drained | B | Very limited | Very limited |
| Hampshire silt loam, 12 to 20 percent slopes, eroded | 1K | Well drained | C | Very limited | Very limited |
| Hampshire silt loam, 5 to 12 percent slopes, eroded | 1K | Well drained | C | Somewhat limited | Very limited |
| Nesbitt silt loam, 6 to 12 percent slopes, eroded | 1K | Moderately well drained | C | Very limited | Very limited |
Soil Orders in This Area
The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.
What This Means
Building & Foundations
About 64% 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 89% 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.