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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

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USGS 401509089540401 21N 7W-21.7h

Mason County, Illinois
Hydrologic Unit Code 07130008
Latitude  40°15'37", Longitude  89°53'57" NAD27
Land-surface elevation 499 feet above NGVD29
The depth of the well is 115 feet below land surface.
The depth of the hole is 115 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 401509089540401 21N 7W-21.7h
Breaks in the plot represent a gap of at least one year between field measurements.
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