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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

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USGS 421145088194801 43N8E-20.6h1 (17-ALG-S)

Mchenry County, Illinois
Hydrologic Unit Code 07120006
Latitude  42°11'45", Longitude  88°19'48" NAD83
Land-surface elevation 879.95 feet above NAVD88
The depth of the well is 47.3 feet below land surface.
The depth of the hole is 189 feet below land surface.
This well is completed in the Sand and gravel aquifers (glaciated regions) (N100GLCIAL) national aquifer.
This well is completed in the Quaternary System (110QRNR) local aquifer.
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Graph of groundwater level data at USGS 421145088194801 43N8E-20.6h1 (17-ALG-S)
Breaks in the plot represent a gap of at least one year between field measurements.
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