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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 415237087504401 39N12E-15.2h1

Cook County, Illinois
Latitude  41°52'37", Longitude  87°50'44" NAD27
Land-surface elevation 632 feet above NGVD29
The depth of the well is 2,076 feet below land surface.

Period of record
Begin Date End Date Levels
1922-12-01 1922-12-01 1

 
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