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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

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  • 420453087583301
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USGS 420453087583301 42N11E-29.4a1

Cook County, Illinois
Hydrologic Unit Code 07120004
Latitude  42°04'53", Longitude  87°58'33" NAD27
Land-surface elevation 680.00 feet above NGVD29
The depth of the hole is 1,525 feet below land surface.
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Graph of groundwater level data at USGS 420453087583301 42N11E-29.4a1
Breaks in the plot represent a gap of at least one year between field measurements.
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