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Groundwater levels for Illinois

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USGS 414315087313102 38N15E-5.1b2 (USEPA BH18I)

Cook County, Illinois
Hydrologic Unit Code 04040001
Latitude  41°43'15.97", Longitude  87°31'31.78" NAD27
Land-surface elevation 591 feet above NGVD29
The depth of the well is 45 feet below land surface.
The depth of the hole is 45 feet below land surface.
This well is completed in the Sand and gravel aquifers (glaciated regions) (N100GLCIAL) national aquifer.
This well is completed in the Quaternary System (110QRNR) local aquifer.
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Graph of groundwater level data at USGS 414315087313102 38N15E-5.1b2 (USEPA BH18I)
Breaks in the plot represent a gap of at least one year between field measurements.
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