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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 413753087511701 36N12E- 4.1a1

Cook County, Illinois
Latitude  41°37'53", Longitude  87°51'17" NAD27
Land-surface elevation 710.00 feet above NGVD29
The depth of the well is 0,397 feet below land surface.
The depth of the hole is 397 feet below land surface.
This well is completed in the Silurian-Devonian aquifers (N400SLRDVN) national aquifer.
This well is completed in the Silurian Dolomite (350SIDO) local aquifer.

Period of record
Begin Date End Date Levels
1956-05-28 1984-11-14 5

 
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