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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

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USGS 401154089415601 20N 5W- 7.1a1

Mason County, Illinois
Hydrologic Unit Code 07130009
Latitude  40°11'54", Longitude  89°41'56" NAD27
Land-surface elevation 575 feet above NGVD29
The depth of the well is 208 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 401154089415601 20N 5W- 7.1a1
Breaks in the plot represent a gap of at least one year between field measurements.
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