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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

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USGS 402530089464201 23N 6W-21.4b1

Mason County, Illinois
Hydrologic Unit Code 07130004
Latitude  40°25'30", Longitude  89°46'42" NAD27
Land-surface elevation 490.00 feet above NGVD29
The depth of the well is 100 feet below land surface.
The depth of the hole is 100 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 402530089464201 23N 6W-21.4b1
Breaks in the plot represent a gap of at least one year between field measurements.
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