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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 415315087501401 39N12E-11.6e1

Cook County, Illinois
Latitude  41°53'15", Longitude  87°50'14" NAD27
Land-surface elevation 626 feet above NGVD29
The depth of the well is 2,048 feet below land surface.

Period of record
Begin Date End Date Levels
1919-07-01 1919-07-01 1

 
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