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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

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USGS 414841087531901 38N12E- 5.4d1

Cook County, Illinois
Hydrologic Unit Code 07120004
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.
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Graph of groundwater level data at USGS 414841087531901 38N12E- 5.4d1
Breaks in the plot represent a gap of at least one year between field measurements.
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