Whiteside County, Illinois

Survey Area IL195 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 Whiteside County, Illinois.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Dickinson sandy loam, 0 to 2 percent slopes 20K Well drainedANot limitedVery limited
Marshan loam, sandy subsratum, 0 to 2 percent slopes 17K Poorly drainedB/DVery limitedVery limited
Richwood silt loam, 2 to 5 percent slopes 17K Well drainedBSomewhat limitedVery limited
Greenbush silt loam, 2 to 5 percent slopes 13K Well drainedBSomewhat limitedSomewhat limited
Drummer silty clay loam, 0 to 2 percent slopes 13K Poorly drainedB/DVery limitedVery limited
Seaton-Timula silt loams, 10 to 18 percent slopes, severely eroded 12K Well drainedBSomewhat limitedSomewhat limited
Seaton silt loam, 5 to 10 percent slopes, eroded 11K Well drainedBNot limitedSomewhat limited
Seaton-Timula silt loams, 18 to 35 percent slopes, eroded 10K Well drainedBVery limitedVery limited
Water 10K Not ratedNot rated
Osco silt loam, 2 to 5 percent slopes 9K Well drainedBSomewhat limitedSomewhat limited
Zumbro sandy loam, 1 to 4 percent slopes, rarely flooded 9K Well drainedAVery limitedVery limited
Elburn silt loam, 0 to 2 percent slopes 9K Somewhat poorly drainedB/DVery limitedVery limited
Ambraw loam, 0 to 2 percent slopes, occasionally flooded 9K Poorly drainedC/DVery limitedVery limited
Prophetstown silt loam, 0 to 2 percent slopes 9K Poorly drainedB/DVery limitedVery limited
Port Byron silt loam, 2 to 5 percent slopes 8K Well drainedBNot limitedSomewhat limited
Lawler loam, 0 to 2 percent slopes 8K Somewhat poorly drainedB/DVery limitedVery limited
Fayette silt loam, glaciated, 5 to 10 percent slopes, eroded 8K Well drainedBSomewhat limitedSomewhat limited
Seaton silt loam, 10 to 18 percent slopes, eroded 8K Well drainedBSomewhat limitedSomewhat limited
Orion silt loam, 0 to 2 percent slopes, frequently flooded 8K Somewhat poorly drainedB/DVery limitedVery limited
Ambraw clay loam, 0 to 2 percent slopes, rarely flooded 8K Poorly drainedC/DVery limitedVery limited

What This Means

Building & Foundations

About 45% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 63% 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

Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.

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