Jackson County, Illinois
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 Jackson County, Illinois.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Menfro-Wellston silt loams, 18 to 35 percent slopes | 19K | Well drained | B | Very limited | Very limited |
| Homen silt loam, 2 to 5 percent slopes | 17K | Moderately well drained | C | Somewhat limited | Very limited |
| Hosmer silt loam, 2 to 5 percent slopes | 14K | Moderately well drained | C | Somewhat limited | Very limited |
| Menfro silt loam, 2 to 5 percent slopes, eroded | 14K | Well drained | B | Somewhat limited | Somewhat limited |
| Water | 13K | Not rated | Not rated | ||
| Darwin silty clay, 0 to 2 percent slopes, occasionally flooded | 11K | Poorly drained | D | Very limited | Very limited |
| Menfro silt loam, 18 to 25 percent slopes | 11K | Well drained | B | Very limited | Very limited |
| Homen silty clay loam, 5 to 10 percent slopes, severely eroded | 9K | Moderately well drained | C | Somewhat limited | Very limited |
| Hurst silt loam, 0 to 2 percent slopes | 8K | Somewhat poorly drained | D | Very limited | Very limited |
| Menfro silt loam, 10 to 18 percent slopes, severely eroded | 8K | Well drained | B | Somewhat limited | Somewhat limited |
| Hickory-Menfro silt loams, 18 to 35 percent slopes | 7K | Well drained | B | Very limited | Very limited |
| Menfro-Wellston silt loams, 35 to 70 percent slopes | 7K | Well drained | B | Very limited | Very limited |
| Jacob silty clay, 0 to 2 percent slopes, occasionally flooded | 7K | Poorly drained | D | Very limited | Very limited |
| Hickory-Homen silty clay loams, 10 to 18 percent slopes, severely eroded | 7K | Well drained | B | Somewhat limited | Somewhat limited |
| Menfro silt loam, 5 to 10 percent slopes, eroded | 7K | Well drained | B | Somewhat limited | Somewhat limited |
| Hosmer silt loam, 10 to 18 percent slopes, severely eroded | 6K | Moderately well drained | C | Somewhat limited | Very limited |
| Hosmer silt loam, 5 to 10 percent slopes, severely eroded | 6K | Moderately well drained | C | Very limited | Very limited |
| Neotoma-Wellston complex, 35 to 70 percent slopes | 6K | Well drained | A | Very limited | Very limited |
| Okaw silt loam, 0 to 2 percent slopes | 6K | Poorly drained | D | Very limited | Very limited |
| Okaw silt loam, 0 to 2 percent slopes, rarely flooded | 6K | Poorly drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 50% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 74% 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.