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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 415030087485601 39N12E-25.5d1

Cook County, Illinois
Latitude  41°50'30", Longitude  87°48'56" NAD27
Land-surface elevation 622 feet above NGVD29
The depth of the well is 1,980 feet below land surface.

Period of record
Begin Date End Date Levels
1914-07-01 1914-07-01 1

 
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