Kendall County, Illinois
The dominant drainage class is Poorly drained and the dominant hydrologic group is B/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 Kendall County, Illinois.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Drummer silty clay loam, 0 to 2 percent slopes | 27K | Poorly drained | B/D | Very limited | Very limited |
| Graymont silt loam, 2 to 5 percent slopes | 20K | Moderately well drained | C | Somewhat limited | Very limited |
| Elpaso silty clay loam, 0 to 2 percent slopes | 10K | Poorly drained | B/D | Very limited | Very limited |
| Bryce silty clay, 0 to 2 percent slopes | 9K | Poorly drained | C/D | Very limited | Very limited |
| Mundelein silt loam, 0 to 2 percent slopes | 7K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Brenton silt loam, 0 to 2 percent slopes | 7K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Swygert silty clay loam, 0 to 2 percent slopes | 7K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Lisbon silt loam, 0 to 2 percent slopes | 7K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Waupecan silt loam, 0 to 2 percent slopes | 6K | Well drained | B | Not limited | Very limited |
| Elburn silt loam, 0 to 2 percent slopes | 6K | Somewhat poorly drained | B/D | Very limited | Very limited |
| Blackberry silt loam, 0 to 2 percent slopes | 6K | Moderately well drained | C | Somewhat limited | Very limited |
| La Rose silt loam, 5 to 10 percent slopes, eroded | 5K | Moderately well drained | C | Very limited | Very limited |
| Martinton silt loam, 0 to 2 percent slopes | 4K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Milford silty clay loam, 0 to 2 percent slopes | 4K | Poorly drained | C/D | Very limited | Very limited |
| Graymont silt loam, 5 to 10 percent slopes, eroded | 4K | Moderately well drained | C | Very limited | Very limited |
| Dresden silt loam, 2 to 4 percent slopes | 3K | Well drained | B | Not limited | Very limited |
| Strawn silt loam, 5 to 10 percent slopes, eroded | 3K | Moderately well drained | C | Very limited | Very limited |
| Plano silt loam, 0 to 2 percent slopes | 3K | Well drained | B | Somewhat limited | Very limited |
| Mayville silt loam, 2 to 5 percent slopes | 3K | Moderately well drained | C | Very limited | Very limited |
| Graymont silt loam, 0 to 2 percent slopes | 2K | Moderately well drained | C | Very limited | Very limited |
What This Means
Building & Foundations
About 73% of soils are rated "very limited" for dwellings with basements. Specific challenges include poor drainage in some areas. A geotechnical assessment is recommended before building.
Septic Systems
About 100% of soils are rated "very limited" for septic absorption fields. Poorly drained soils can't absorb septic effluent effectively. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Many soils hold water for extended periods. Raised beds are highly recommended to improve drainage for vegetables. Well-adapted native plants and water-loving species will do best in natural conditions.