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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 421335088204601 43N 8E- 6.4a

Mchenry County, Illinois
Latitude  42°13'35", Longitude  88°20'46" NAD27
Land-surface elevation 890 feet above NGVD29
The depth of the well is 1,295 feet below land surface.
The depth of the hole is 1,295 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
1963-07-06 1987-08-12 7

 
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