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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

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USGS 415954088090301 41N 9E-36.3f2

Cook County, Illinois
Hydrologic Unit Code 07120006
Latitude  41°59'54", Longitude  88°09'03" NAD27
Land-surface elevation 830.00 feet above NGVD29
The depth of the well is 1,429 feet below land surface.
The depth of the hole is 1,429 feet below land surface.
This well is completed in the Cambrian-Ordovician aquifer system (S300CAMORD) national aquifer.
This well is completed in the Ordovician-Cambrian Systems (367OVCB) local aquifer.
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Graph of groundwater level data at USGS 415954088090301 41N 9E-36.3f2
Breaks in the plot represent a gap of at least one year between field measurements.
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