Jefferson County, Indiana
The dominant drainage class is Well 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 Jefferson County, Indiana.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Cobbsfork silt loam, 0 to 1 percent slopes | 39K | Poorly drained | C/D | Very limited | Very limited |
| Eden flaggy silty clay, 25 to 50 percent slopes | 26K | Well drained | D | Very limited | Very limited |
| Avonburg silt loam, 0 to 2 percent slopes | 24K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Cincinnati silt loam, 2 to 6 percent slopes, eroded | 16K | Well drained | C | Somewhat limited | Very limited |
| Nabb silt loam, 2 to 6 percent slopes, eroded | 11K | Moderately well drained | C/D | Very limited | Very limited |
| Rossmoyne silt loam, 0 to 2 percent slopes | 10K | Moderately well drained | C/D | Very limited | Very limited |
| Cincinnati silt loam, 6 to 12 percent slopes, eroded | 10K | Well drained | C | Very limited | Very limited |
| Eden silty clay loam, 12 to 25 percent slopes, eroded | 8K | Well drained | D | Very limited | Very limited |
| Carmel silt loam, 6 to 12 percent slopes, eroded | 6K | Well drained | C | Very limited | Very limited |
| Ryker silt loam, 2 to 6 percent slopes, eroded | 5K | Well drained | B | Somewhat limited | Somewhat limited |
| Wirt silt loam, occasionally flooded | 5K | Well drained | B | Very limited | Very limited |
| Beasley-Rock outcrop complex, 12 to 25 percent slopes, severely eroded | 4K | Well drained | C | Very limited | Very limited |
| Ryker silt loam, 6 to 12 percent slopes, eroded | 4K | Well drained | B | Somewhat limited | Somewhat limited |
| Eden-Caneyville complex, 25 to 60 percent slopes | 4K | Well drained | D | Very limited | Very limited |
| Holton loam, occasionally flooded | 4K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Caneyville-Rock outcrop complex, 25 to 60 percent slopes | 3K | Well drained | C | Very limited | Very limited |
| Hickory silt loam, 18 to 45 percent slopes | 3K | Well drained | B | Very limited | Very limited |
| Avonburg silt loam, 2 to 4 percent slopes, eroded | 3K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Grayford silt loam, 12 to 18 percent slopes, eroded | 3K | Well drained | B | Very limited | Very limited |
| Hickory silt loam, Muscatatuck Plateau, 12 to 18 percent slopes, eroded | 3K | Well drained | B | Very limited | Very limited |
What This Means
Building & Foundations
About 86% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 95% 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.