Piatt County, Illinois

Survey Area IL147 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 Piatt County, Illinois.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Flanagan silt loam, 0 to 2 percent slopes 57K Somewhat poorly drainedC/DVery limitedVery limited
Drummer silty clay loam, 0 to 2 percent slopes 47K Poorly drainedB/DVery limitedVery limited
Sable silty clay loam, 0 to 2 percent slopes 37K Poorly drainedB/DVery limitedVery limited
Ipava silt loam, 0 to 2 percent slopes 28K Somewhat poorly drainedC/DVery limitedVery limited
Drummer-Milford silty clay loams, 0 to 2 percent slopes 23K Poorly drainedB/DVery limitedVery limited
Elburn silt loam, 0 to 2 percent slopes 9K Somewhat poorly drainedB/DVery limitedVery limited
Dana silt loam, 2 to 5 percent slopes, eroded 8K Moderately well drainedCVery limitedVery limited
Sawmill silty clay loam, 0 to 2 percent slopes, frequently flooded 7K Poorly drainedB/DVery limitedVery limited
Pella silty clay loam, 0 to 2 percent slopes 7K Poorly drainedB/DVery limitedVery limited
Catlin silt loam, 2 to 5 percent slopes, eroded 6K Moderately well drainedCSomewhat limitedVery limited
Harpster silty clay loam, 0 to 2 percent slopes 5K Poorly drainedB/DVery limitedVery limited
Hartsburg silty clay loam, 0 to 2 percent slopes 5K Poorly drainedB/DVery limitedVery limited
Catlin silt loam, 2 to 5 percent slopes 4K Moderately well drainedCSomewhat limitedVery limited
Drummer-Milford silty clay loams, 0 to 2 percent slopes, rarely flooded 4K Poorly drainedB/DVery limitedVery limited
Russell silt loam, Bloomington Ridged Plain, 2 to 5 percent slopes 3K Well drainedBSomewhat limitedSomewhat limited
Sabina silt loam, 0 to 2 percent slopes 3K Somewhat poorly drainedC/DVery limitedVery limited
Russell silt loam, Bloomington Ridged Plain, 5 to 10 percent slopes, eroded 2K Well drainedBSomewhat limitedSomewhat limited
Dana silt loam, 2 to 5 percent slopes 2K Moderately well drainedCVery limitedVery limited
Sunbury silt loam, 0 to 2 percent slopes 2K Somewhat poorly drainedC/DVery limitedVery limited
Xenia silt loam, Bloomington Ridged Plain, 2 to 5 percent slopes 2K Moderately well drainedCVery limitedVery limited

What This Means

Building & Foundations

About 93% 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 98% 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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