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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 421309088142801 43N 8E-12.2d1

Mchenry County, Illinois
Latitude  42°13'09", Longitude  88°14'28" NAD27
Land-surface elevation 860 feet above NGVD29
The depth of the well is 1,345 feet below land surface.
This well is completed in the Cambrian-Ordovician aquifer system (S300CAMORD) national aquifer.
This well is completed in the Ironton-Galesville (372IRGL) local aquifer.

Period of record
Begin Date End Date Levels
1964-01-01 1964-01-01 1

 
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