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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 413235087415801 35N13E- 2.3a1

Cook County, Illinois
Latitude  41°32'35", Longitude  87°41'58" NAD27
Land-surface elevation 706.00 feet above NGVD29
The depth of the well is 1,784 feet below land surface.
The depth of the hole is 1,784 feet below land surface.

Period of record
Begin Date End Date Levels
1970-12-23 1970-12-23 1

 
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