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This dataset provides a statewide screening tool for groundwater protection, environmental assessment, natural resource planning, and prioritization of locations where more detailed site-specific hydrogeologic review may be warranted. It is intended for regional analysis and screening, not as a substitute for detailed site investigations. |
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This dataset provides a statewide screening tool for groundwater protection, environmental assessment, natural resource planning, and prioritization of locations where more detailed site-specific hydrogeologic review may be warranted. It is intended for regional analysis and screening, not as a substitute for detailed site investigations. |
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Copyright (C) 1997, 2026 The Board of Trustees of the University of Illinois |
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250000 |
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| description:
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This polygon feature layer represents a statewide screening map of shallow groundwater sensitivity to contamination in Illinois. The map predicts the potential for movement of contaminants from the land surface into shallow groundwater using intrinsic soil and geologic characteristics, including soil leaching or water-flux characteristics and the depth to the uppermost aquifer. The layer was prepared for the Illinois Nature Preserves vulnerability assessment described by Locke et al. (1997), which used the sensitivity map to screen Illinois nature preserves and surrounding areas for potential groundwater contamination concerns. |
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These data are appropriate for statewide and regional screening and prioritization. They are not appropriate as a geodetic, legal, engineering, or site-specific hydrogeologic base and are not intended as a substitute for surveyed locations or detailed site-specific studies. The source maps used in the sensitivity model were published at a scale of 1:250,000, and Locke et al. (1997) identified the sensitivity map as a 1:500,000 screening product. Evaluations requiring highly accurate local predictions should incorporate site-specific soils, geologic, hydrologic, and water-quality information. |
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| title:
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Illinois Groundwater Sensitivity Map |
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| tags:
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["groundwater","ground water","groundwater sensitivity","groundwater vulnerability","aquifer sensitivity","aquifer","hydrogeology","contamination","soil leaching","Illinois Nature Preserves","Illinois","United States"] |
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en-US |
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500000 |
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