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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

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USGS 421155088133101 43N 9E-18.3a1

Mchenry County, Illinois
Hydrologic Unit Code 07120006
Latitude  42°11'55", Longitude  88°13'31" NAD27
Land-surface elevation 745 feet above NGVD29
The depth of the well is 140 feet below land surface.
The depth of the hole is 140 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.
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Graph of groundwater level data at USGS 421155088133101 43N 9E-18.3a1
Breaks in the plot represent a gap of at least one year between field measurements.
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