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Groundwater levels for the Nation

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USGS 414009087364201 37N14E-27.6f1

Cook County, Illinois
Hydrologic Unit Code 07120003
Latitude  41°40'09", Longitude  87°36'42" NAD27
Land-surface elevation 591.62 feet above NGVD29
The depth of the hole is 85 feet below land surface.
This well is completed in the Silurian-Devonian aquifers (N400SLRDVN) national aquifer.
This well is completed in the Racine Formation (355RCIN) local aquifer.
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Graph of groundwater level data at USGS 414009087364201 37N14E-27.6f1
Breaks in the plot represent a gap of at least one year between field measurements.
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