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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 414841087531901 38N12E- 5.4d1

Cook County, Illinois
Latitude  41°48'41", Longitude  87°53'19" NAD27
Land-surface elevation 657 feet above NAVD88
The depth of the well is 358 feet below land surface.
This well is completed in the Silurian-Devonian aquifers (N400SLRDVN) national aquifer.
This well is completed in the Silurian System (350SLRN) local aquifer.

Period of record
Begin Date End Date Levels
1985-10-11 1985-10-11 1

 
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