Knox 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 Knox County, Indiana.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Alford silt loam, 2 to 5 percent slopes, eroded | 20K | Well drained | B | Not limited | Somewhat limited |
| Sylvan silt loam, 2 to 6 percent slopes, eroded | 19K | Well drained | B | Not limited | Somewhat limited |
| Wakeland silt loam, 0 to 2 percent slopes, frequently flooded | 15K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Patton silt loam | 13K | Poorly drained | C/D | Very limited | Very limited |
| Selma loam | 12K | Poorly drained | B/D | Very limited | Very limited |
| Alford silt loam, 5 to 10 percent slopes, eroded | 12K | Well drained | B | Not limited | Somewhat limited |
| Ayrshire fine sandy loam | 11K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Haymond silt loam, 0 to 2 percent slopes, frequently flooded | 11K | Well drained | B | Very limited | Very limited |
| Hosmer silt loam, 2 to 5 percent slopes, eroded | 11K | Moderately well drained | C/D | Very limited | Very limited |
| Armiesburg silty clay loam, rarely flooded | 11K | Well drained | B | Very limited | Somewhat limited |
| Nolin silty clay loam, rarely flooded | 10K | Well drained | B | Very limited | Very limited |
| Bloomfield loamy fine sand, 2 to 10 percent slopes | 10K | Somewhat excessively drained | A | Not limited | Very limited |
| Alvin fine sandy loam, 2 to 5 percent slopes | 10K | Well drained | A | Not limited | Very limited |
| Fairpoint parachannery silt loam, 0 to 8 percent slopes | 10K | Well drained | D | Not limited | Not limited |
| Petrolia silty clay loam, 0 to 2 percent slopes, frequently flooded | 9K | Poorly drained | C/D | Very limited | Very limited |
| Reesville silt loam, 0 to 2 percent slopes | 8K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Water | 8K | Not rated | Not rated | ||
| Zipp silty clay, frequently flooded | 7K | Poorly drained | D | Very limited | Very limited |
| Stockland sandy loam, 0 to 2 percent slopes | 7K | Well drained | A | Not limited | Very limited |
| Lyles fine sandy loam | 6K | Poorly drained | B/D | Very limited | Very limited |
What This Means
Building & Foundations
About 57% of soils are rated "very limited" for dwellings with basements. Specific challenges include poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 64% 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.