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Groundwater levels for the Nation

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USGS 411112088180601 31N 8E- 4.2b1

Grundy County, Illinois
Hydrologic Unit Code 07120005
Latitude  41°11'12", Longitude  88°18'06" NAD27
Land-surface elevation 591 feet above NGVD29
The depth of the well is 972 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 411112088180601 31N 8E- 4.2b1
Breaks in the plot represent a gap of at least one year between field measurements.
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