Henry County, Illinois

Survey Area IL073• Illinois

The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). The most common soil order is Alfisols — moderately leached forest soils with a clay-enriched subsoil. 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 Henry County, Illinois. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map Unit	Acres	Drainage	Hydro Group	Dwellings	Septic
Osco silt loam, 2 to 5 percent slopes	42K	Well drained	B	Somewhat limited	Somewhat limited
Ipava silt loam, 0 to 2 percent slopes	30K	Somewhat poorly drained	C/D	Very limited	Very limited
Osco silt loam, 5 to 10 percent slopes, eroded	25K	Well drained	B	Somewhat limited	Somewhat limited
Greenbush silt loam, 5 to 10 percent slopes, eroded	23K	Well drained	B	Somewhat limited	Somewhat limited
Muscatune silt loam, 0 to 2 percent slopes	20K	Somewhat poorly drained	B/D	Very limited	Very limited
Radford silt loam, 0 to 2 percent slopes, frequently flooded	19K	Somewhat poorly drained	B/D	Very limited	Very limited
Sylvan silty clay loam, 10 to 18 percent slopes, severely eroded	17K	Well drained	B	Somewhat limited	Somewhat limited
Greenbush silt loam, 2 to 5 percent slopes	16K	Well drained	B	Somewhat limited	Somewhat limited
Elburn silt loam, 0 to 2 percent slopes	15K	Somewhat poorly drained	B/D	Very limited	Very limited
Sawmill silt loam, 0 to 2 percent slopes, frequently flooded, overwash	14K	Poorly drained	B/D	Very limited	Very limited
Drummer silty clay loam, 0 to 2 percent slopes	12K	Poorly drained	B/D	Very limited	Very limited
Fayette silt loam, glaciated, 5 to 10 percent slopes, eroded	12K	Well drained	B	Somewhat limited	Somewhat limited
Plano silt loam, 2 to 5 percent slopes	8K	Well drained	B	Somewhat limited	Very limited
Sawmill silty clay loam, 0 to 2 percent slopes, frequently flooded	8K	Poorly drained	B/D	Very limited	Very limited
Harpster silty clay loam, 0 to 2 percent slopes	7K	Poorly drained	B/D	Very limited	Very limited
Sylvan silt loam, 10 to 18 percent slopes, eroded	7K	Well drained	B	Somewhat limited	Somewhat limited
Orion silt loam, 0 to 2 percent slopes, frequently flooded	6K	Somewhat poorly drained	B/D	Very limited	Very limited
Buckhart silt loam, 0 to 2 percent slopes	6K	Moderately well drained	C	Somewhat limited	Very limited
Hickory clay loam, cool mesic, 10 to 18 percent slopes, severely eroded	6K	Well drained	B	Somewhat limited	Somewhat limited
Ambraw loam, 0 to 2 percent slopes, occasionally flooded	6K	Poorly drained	C/D	Very limited	Very limited

Soil Orders in This Area

The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.

Alfisols

Moderately weathered forest soils with clay-enriched subsoil. Productive for agriculture, generally good for building and septic.

Mollisols

Fertile grassland soils with thick, dark topsoil. Among the best for agriculture, building, and gardening.

Inceptisols

Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.

Entisols

Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.

What This Means

Building & Foundations

About 46% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 50% of soils have significant septic limitations, while others are more suitable. A perc test is essential — conditions vary across the area.

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.