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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 421813089373601 27N 8E-30.6b1

Stephenson County, Illinois
Latitude  42°18'13", Longitude  89°37'36" NAD27
Land-surface elevation 760 feet above NGVD29
The depth of the well is 502 feet below land surface.
The depth of the hole is 503 feet below land surface.
This well is completed in the Cambrian-Ordovician aquifer system (S300CAMORD) national aquifer.
This well is completed in the Ancell Group (365ANCL) local aquifer.

Period of record
Begin Date End Date Levels
1921 1986-09-03 11

 
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