Warren County Soil Data
Warren County, Illinois
Avg pH
6.4
Texture
Silt Loam
Drainage
N/A
Organic Matter
2.4%
Hydrologic Group
N/A
Data Story
About Soil in Warren County, Illinois
Balanced pH in Western Illinois
Warren County features an average pH of 6.43, sitting slightly above the state average of 6.39. This falls just shy of the national median of 6.5, representing a healthy balance for nutrient availability. Most standard garden plants will thrive in this nearly neutral environment.
Silky Silt with High Moisture Retention
The composition is dominated by silt at 69.7%, with 22.7% clay and a very low 7.6% sand. This makes for a fine-textured soil that is incredibly smooth and holds water with high efficiency. However, the lack of sand means the soil is prone to compaction if worked while wet.
High Water Storage Despite Lower Organic Matter
The organic matter content is 2.40%, which is below the Illinois average of 2.94% but above the national average. Remarkably, the available water capacity is 0.216 in/in, significantly higher than the state average of 0.204 in/in. This soil is a reservoir for moisture, protecting plants during dry summer weeks.
Efficient Water Management in Silt
While drainage and hydrologic classes are not officially specified, the high available water capacity is a key trait of this land. The very high silt content suggests that water moves slowly but is held tightly by the soil particles. This makes it a reliable choice for crops that require steady hydration.
Diverse Potential in Zone 5b
Located in Zone 5b, Warren County is ideal for growing staple Midwestern vegetables like beans, squash, and potatoes. The high water capacity means you won't have to water your garden as often as in other regions. It is a great place to start a drought-resistant landscape or a productive home farm.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Hydrologic group data not available.
Drainage Class
Drainage class data not available.
Soil Profile
Dominant texture: Silt Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Warren County have?
Warren County's soil is classified as Silt Loam. This indicates the relative proportions of sand, silt, and clay — 8% sand, 70% silt, and 23% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Warren County's soil acidic or alkaline?
Warren County's soil has a pH of 6.4, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Warren County?
Drainage class data is not currently available for Warren County.
What crops or plants grow well in Warren County's soil?
Based on Warren County's Silt Loam texture, pH of 6.4, and drainage class, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens.
What USDA soil order is found in Warren County?
The dominant USDA soil order for Warren County is not currently available in our dataset.
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Other Counties in Illinois
Soil data sourced from USDA SSURGO via Soil Data Access. Data is informational only and should not be used as a substitute for on-site soil testing. Contact your local NRCS office for site-specific soil information.