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Groundwater levels for Illinois

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! Important: Next Generation Monitoring Location Page

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  • 420805088072001
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USGS 420805088072001 42N 9E-12.1f1

Cook County, Illinois
Hydrologic Unit Code 07120006
Latitude  42°08'05", Longitude  88°07'20" NAD27
Land-surface elevation 860 feet above NGVD29
The depth of the well is 274 feet below land surface.
This well is completed in the Silurian-Devonian aquifers (N400SLRDVN) national aquifer.
This well is completed in the Silurian System (350SLRN) local aquifer.
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Graph of groundwater level data at USGS 420805088072001 42N 9E-12.1f1
Breaks in the plot represent a gap of at least one year between field measurements.
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