Layers:

Layer: Geologic_Sensitivity_1997 (0)

Name: Geologic_Sensitivity_1997

Display Field: GWS_Text

Type: Feature Layer

Geometry Type: esriGeometryPolygon

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.

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

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

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]]



Drawing Info:
Renderer:
Unique Value Renderer:
Field 1: GWS
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: 0
  Label: 0
  Description: N/A
  Symbol:
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  Color: [255, 191, 233, 255]
  Outline:
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  Width: 0
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  Label: 1 (A-Very High)
  Description: N/A
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  Outline:
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  Label: 2 (B-High)
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  Outline:
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  Label: 3 (C-Moderate)
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  Outline:
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  Label: 4 (Limited)
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  Outline:
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• Value: 8
  Label: 8 (Disturbed Land)
  Description: N/A
  Symbol:
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  Color: [176, 176, 176, 255]
  Outline:
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  Color: [110, 110, 110, 255]
  Width: 0
• Value: 9
  Label: 9 (Surface Water)
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [28, 20, 255, 255]
  Outline:
  Style: esriSLSSolid
  Color: [110, 110, 110, 255]
  Width: 0
Transparency: 0
Labeling Info:
Advanced Query Capabilities:
Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false


HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:
• OBJECTID ( type: esriFieldTypeOID, alias: FID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• GWS ( type: esriFieldTypeInteger, alias: GWS )
• Shape_Length ( type: esriFieldTypeDouble, alias: Shape_Length )
• Shape_Area ( type: esriFieldTypeDouble, alias: Shape_Area )
• GWS_Text ( type: esriFieldTypeString, alias: GWS_Text, length: 512 )