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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 422038088142901 45N 8E-25.2a1

Mchenry County, Illinois
Latitude  42°20'38", Longitude  88°14'29" NAD27
Land-surface elevation 760 feet above NGVD29
The depth of the well is 180 feet below land surface.
The depth of the hole is 180 feet below land surface.
This well is completed in the Silurian-Devonian aquifers (N400SLRDVN) national aquifer.
This well is completed in the Silurian System (350SLRN) local aquifer.

Period of record
Begin Date End Date Levels
1955-08-01 1955-08-01 1

 
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