Posey County, Indiana
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 Posey County, Indiana.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Wakeland silt loam, 0 to 2 percent slopes, frequently flooded | 23K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Alford silt loam, 2 to 5 percent slopes, eroded | 22K | Well drained | B | Not limited | Somewhat limited |
| McAdoo silt loam, frequently flooded | 15K | Well drained | B | Very limited | Very limited |
| Alford silt loam, 5 to 10 percent slopes, severely eroded | 15K | Well drained | B | Not limited | Somewhat limited |
| Evansville silt loam, rarely flooded | 14K | Poorly drained | B/D | Very limited | Very limited |
| Iona silt loam, 2 to 6 percent slopes, eroded | 13K | Moderately well drained | C | Very limited | Very limited |
| Henshaw silt loam, 0 to 2 percent slopes, rarely flooded | 9K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Water | 9K | Not rated | Not rated | ||
| Newark silty clay loam, frequently flooded | 8K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Sylvan silt loam, 6 to 12 percent slopes, severely eroded | 7K | Well drained | B | Somewhat limited | Somewhat limited |
| Elkinsville silt loam, 0 to 2 percent slopes, rarely flooded | 7K | Well drained | B | Very limited | Somewhat limited |
| Alford silt loam, 10 to 18 percent slopes, severely eroded | 7K | Well drained | B | Somewhat limited | Somewhat limited |
| Ginat silt loam, rarely flooded | 7K | Poorly drained | C/D | Very limited | Very limited |
| Petrolia silty clay loam, 0 to 2 percent slopes, frequently flooded | 7K | Poorly drained | C/D | Very limited | Very limited |
| Uniontown silt loam, 2 to 6 percent slopes, eroded, rarely flooded | 7K | Moderately well drained | C | Very limited | Very limited |
| Weinbach silt loam, 0 to 2 percent slopes, rarely flooded | 6K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Patton silty clay loam, rarely flooded | 6K | Poorly drained | C/D | Very limited | Very limited |
| Sylvan silt loam, 18 to 40 percent slopes | 6K | Well drained | B | Very limited | Very limited |
| Vincennes loam, rarely flooded | 5K | Poorly drained | C/D | Very limited | Very limited |
| Wheeling loam, 0 to 2 percent slopes, rarely flooded | 5K | Well drained | B | Very limited | Somewhat limited |
What This Means
Building & Foundations
About 69% 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 63% 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
Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.