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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 403353087533201 24N14W- 1.6d1

Iroquois County, Illinois
Latitude  40°33'53", Longitude  87°53'32" NAD27
Land-surface elevation 667.5 feet above NGVD29
The depth of the hole is 240 feet below land surface.

Period of record
Begin Date End Date Levels
1922 1922 1

 
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