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Service Description: 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.

Map Name: Geologic_Sensitivity_1997

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• Geologic_Sensitivity_1997 (0)

Description:

Copyright Text: Copyright (C) 1997, 2026 The Board of Trustees of the University of Illinois

Spatial Reference: PROJCS["Illinois State Transverse_Mercator",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",3280833.3333333],PARAMETER["False_Northing",3937000.0],PARAMETER["Central_Meridian",-89.5],PARAMETER["Scale_Factor",0.9998529411767059],PARAMETER["Latitude_Of_Origin",36.66666666666666],UNIT["Foot_US",0.3048006096012192]]


Single Fused Map Cache: false

Initial Extent:

XMin: 2224792.534726315
YMin: 3945366.405696012
XMax: 4345919.31199634
YMax: 6168555.768483214
Spatial Reference: PROJCS["Illinois State Transverse_Mercator",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",3280833.3333333],PARAMETER["False_Northing",3937000.0],PARAMETER["Central_Meridian",-89.5],PARAMETER["Scale_Factor",0.9998529411767059],PARAMETER["Latitude_Of_Origin",36.66666666666666],UNIT["Foot_US",0.3048006096012192]]

Full Extent:

XMin: 2718241.210480161
YMin: 4047024.9027337357
XMax: 3852470.636242494
YMax: 6066897.27144549
Spatial Reference: PROJCS["Illinois State Transverse_Mercator",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Transverse_Mercator"],PARAMETER["False_Easting",3280833.3333333],PARAMETER["False_Northing",3937000.0],PARAMETER["Central_Meridian",-89.5],PARAMETER["Scale_Factor",0.9998529411767059],PARAMETER["Latitude_Of_Origin",36.66666666666666],UNIT["Foot_US",0.3048006096012192]]

Units: esriFeet

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

Document Info:

Title: Keefer1997_Geologic_Sensitivity_Legacy
Author:
Comments:
Subject:
Category:
Keywords: groundwater,ground water,groundwater sensitivity,groundwater vulnerability,aquifer sensitivity,aquifer,hydrogeology,contamination,soil leaching,Illinois Nature Preserves,Illinois,United States
AntialiasingMode: None
TextAntialiasingMode: Force

Supports Dynamic Layers: true

Resampling: false

MaxRecordCount: 2000

MaxImageHeight: 4096

MaxImageWidth: 4096

Supported Query Formats: JSON, geoJSON, PBF

Supports Query Data Elements: true

Min Scale: 0

Max Scale: 0

Supports Datum Transformation: true



Child Resources:   Info   Dynamic Layer

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