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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 420637087574501 42N11E-16.7a1

Cook County, Illinois
Latitude  42°06'37", Longitude  87°57'45" NAD27
Land-surface elevation 686.00 feet above NGVD29
The depth of the well is 1,778 feet below land surface.
The depth of the hole is 1,778 feet below land surface.

Period of record
Begin Date End Date Levels
1967-09-28 1967-09-28 1

 
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