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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

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USGS 414828087543501 38N12E- 6.5c1

Cook County, Illinois
Hydrologic Unit Code 07120004
Latitude  41°48'28", Longitude  87°54'35" NAD27
Land-surface elevation 646 feet above NGVD29
The depth of the well is 2,046 feet below land surface.
The depth of the hole is 2,050 feet below land surface.
This well is completed in the Cambrian-Ordovician aquifer system (S300CAMORD) national aquifer.
This well is completed in the Mount Simon Sandstone (372MNSM) local aquifer.
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Graph of groundwater level data at USGS 414828087543501 38N12E- 6.5c1
Breaks in the plot represent a gap of at least one year between field measurements.
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