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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 420551088025101 42N10E-22.2a1

Cook County, Illinois
Latitude  42°05'51", Longitude  88°02'51" NAD27
Land-surface elevation 732.00 feet above NGVD29
The depth of the well is 1,950 feet below land surface.
The depth of the hole is 1,950 feet below land surface.
This well is completed in the Cambrian-Ordovician aquifer system (S300CAMORD) national aquifer.
This well is completed in the Ordovician-Cambrian Systems (367OVCB) local aquifer.

Period of record
Begin Date End Date Levels
1971-07-14 1971-07-14 1

 
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