Macon County, Illinois

Survey Area IL115 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 Macon County, Illinois.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Flanagan silt loam, 0 to 2 percent slopes 71K Somewhat poorly drainedC/DVery limitedVery limited
Drummer silty clay loam, 0 to 2 percent slopes 39K Poorly drainedB/DVery limitedVery limited
Sable silty clay loam, 0 to 2 percent slopes 39K Poorly drainedB/DVery limitedVery limited
Drummer-Milford silty clay loams, 0 to 2 percent slopes 36K Poorly drainedB/DVery limitedVery limited
Ipava silt loam, 0 to 2 percent slopes 27K Somewhat poorly drainedC/DVery limitedVery limited
Catlin silt loam, 2 to 5 percent slopes 24K Moderately well drainedCSomewhat limitedVery limited
Elburn silt loam, 0 to 2 percent slopes 14K Somewhat poorly drainedB/DVery limitedVery limited
Sawmill silty clay loam, 0 to 2 percent slopes, frequently flooded 10K Poorly drainedB/DVery limitedVery limited
Birkbeck silt loam, 2 to 5 percent slopes 10K Moderately well drainedCVery limitedVery limited
Lawson silt loam, cool mesic, 0 to 2 percent slopes, frequently flooded 7K Somewhat poorly drainedB/DVery limitedVery limited
Hartsburg silty clay loam, 0 to 2 percent slopes 7K Poorly drainedB/DVery limitedVery limited
Dana silt loam, 2 to 5 percent slopes 6K Moderately well drainedCVery limitedVery limited
Harpster silty clay loam, 0 to 2 percent slopes 6K Poorly drainedB/DVery limitedVery limited
Russell silt loam, Bloomington Ridged Plain, 5 to 10 percent slopes, eroded 5K Well drainedBSomewhat limitedSomewhat limited
Water 4K Not ratedNot rated
Plano silt loam, 2 to 5 percent slopes 4K Well drainedBSomewhat limitedVery limited
Senachwine silt loam, 18 to 35 percent slopes 4K Well drainedCVery limitedVery limited
Senachwine silt loam, 5 to 10 percent slopes, eroded 4K Well drainedCNot limitedVery limited
Sabina silt loam, 0 to 2 percent slopes 3K Somewhat poorly drainedC/DVery limitedVery limited
Wyanet silt loam, 5 to 10 percent slopes, eroded 3K Well drainedCNot limitedVery limited

What This Means

Building & Foundations

About 86% 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 97% 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.

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