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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

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USGS 420825087573901 42N11E- 4.6a1

Cook County, Illinois
Hydrologic Unit Code 07120004
Latitude  42°08'25", Longitude  87°57'39" NAD27
Land-surface elevation 686.00 feet above NGVD29
The depth of the well is 1,355 feet below land surface.
The depth of the hole is 1,355 feet below land surface.
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Graph of groundwater level data at USGS 420825087573901 42N11E- 4.6a1
Breaks in the plot represent a gap of at least one year between field measurements.
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