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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 414935088012501 39N11E-31.4f1

Dupage County, Illinois
Latitude  41°49'35", Longitude  88°01'25" NAD27
Land-surface elevation 728 feet above NGVD29
The depth of the well is 320 feet below land surface.
The depth of the hole is 330 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
1971-09-29 1985-07-10 3

 
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