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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 420024087592101 41N11E-33.5h

Cook County, Illinois
Latitude  42°00'23.6", Longitude  87°59'20.9" NAD83
Land-surface elevation 687 feet above NGVD29
The depth of the well is 20.0 feet below land surface.
The depth of the hole is 20 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.

Period of record
Begin Date End Date Levels
2012-04-23 2013-05-17 7

 
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