Illinois Soil Pesticide Leaching Classes

Six qualitative pesticide leaching classes categorize Illinois soil associations based on relative probability of pesticide movement. The data set was created by SCIOPS by combining nitrate leaching interpretations with soil organic matter distribution, published in 1995.

Use Cases

• Map aquifer sensitivity to pesticide leaching using the six qualitative classes (Excessive, High, Moderate, Somewhat Limited, Limited, Very Limited).
• Evaluate soil association leaching class variability using the trimmed range values that exclude the upper and lower 10% of extreme values.
• Identify disturbed land and surface water areas as part of statewide environmental risk assessment.
• Combine nitrate leaching class data with organic matter distribution to model pesticide adsorption and movement retardation.

Strengths

• Statewide coverage of Illinois soils.
• Derived from source data mapped at a detailed 1:15,000 scale.
• Part of a suite of six related data sets for comprehensive environmental analysis.

Limitations

• Classifications are qualitative rankings and have not been validated by water quality sampling.
• Data is temporally stale, last updated in 1995.
• Nominal map scale is 1:250,000, which may limit precision for localized analysis.

Provenance

Source

SCIOPS

Collection Method

Generated by combining nitrate leaching class interpretations from a soil association map with information on soil organic matter distribution.

Time Range

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Freshness

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Geography

Illinois, USA