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Groundwater levels for Illinois

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! Important: Next Generation Monitoring Location Page

USGS 421806089414401 27N 7E-28.1a

Stephenson County, Illinois
Latitude  42°18'06", Longitude  89°41'44" NAD27
Land-surface elevation 815 feet above NGVD29
The depth of the well is 120 feet below land surface.
The depth of the hole is 120 feet below land surface.
This well is completed in the Cambrian-Ordovician aquifer system (S300CAMORD) national aquifer.
This well is completed in the Galena-Platteville Groups (365GLPV) local aquifer.

Period of record
Begin Date End Date Levels
1970 1970 1

 
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