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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 405104090515401 10N 4W-17.1a1

Henderson County, Illinois
Latitude  40°51'04", Longitude  90°51'54" NAD27
Land-surface elevation 680 feet above NGVD29
The depth of the well is 891 feet below land surface.
This well is completed in the Cambrian-Ordovician aquifer system (S300CAMORD) national aquifer.
This well is completed in the Ordovician System (360ODVC) local aquifer.

Period of record
Begin Date End Date Levels
1936 1936 1

 
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