Tazewell 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 Tazewell County, Illinois.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Ipava silt loam, 0 to 2 percent slopes | 57K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Sable silty clay loam, 0 to 2 percent slopes | 45K | Poorly drained | B/D | Very limited | Very limited |
| Osco silt loam, 2 to 5 percent slopes | 31K | Well drained | B | Somewhat limited | Somewhat limited |
| Rozetta silt loam, 2 to 5 percent slopes, eroded | 25K | Well drained | B | Somewhat limited | Somewhat limited |
| Stronghurst silt loam, 0 to 2 percent slopes | 14K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Senachwine-Hennepin loams, 35 to 60 percent slopes | 13K | Well drained | C | Very limited | Very limited |
| Buckhart silt loam, 2 to 5 percent slopes | 13K | Moderately well drained | C | Somewhat limited | Very limited |
| Birkbeck silt loam, 5 to 10 percent slopes, eroded | 11K | Moderately well drained | C | Very limited | Very limited |
| Water | 9K | Not rated | Not rated | ||
| Ross silt loam, 0 to 2 percent slopes, frequently flooded | 8K | Well drained | B | Very limited | Very limited |
| Onarga sandy loam, 0 to 2 percent slopes | 8K | Well drained | A | Not limited | Very limited |
| Cresent loam, 0 to 2 percent slopes | 8K | Well drained | B | Somewhat limited | Very limited |
| Titus silty clay, 0 to 2 percent slopes, rarely flooded | 7K | Poorly drained | C/D | Very limited | Very limited |
| Senachwine-Hennepin loams, 18 to 35 percent slopes | 7K | Well drained | C | Very limited | Very limited |
| Tama silt loam, very deep to sand, 0 to 2 percent slopes | 7K | Well drained | B | Somewhat limited | Very limited |
| Sawmill silty clay loam, 0 to 2 percent slopes, frequently flooded | 6K | Poorly drained | B/D | Very limited | Very limited |
| Ambraw loam, 0 to 2 percent slopes, rarely flooded | 6K | Poorly drained | C/D | Very limited | Very limited |
| Catlin silt loam, 5 to 10 percent slopes, eroded | 6K | Moderately well drained | C | Somewhat limited | Very limited |
| Huntsville silt loam, 0 to 2 percent slopes, frequently flooded | 6K | Well drained | B | Very limited | Very limited |
| Orthents, loamy, 2 to 20 percent slopes | 5K | Moderately well drained | C | Somewhat limited | Somewhat limited |
What This Means
Building & Foundations
About 61% 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 75% 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.