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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 405716087424601 29N12W-33.

Iroquois County, Illinois
Latitude  40°57'16", Longitude  87°42'46" NAD27
Land-surface elevation 635 feet above NGVD29
The depth of the well is 87 feet below land surface.

Period of record
Begin Date End Date Levels
1987-07 1987-07 1

 
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