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Groundwater levels for the Nation

! Important: Next Generation Monitoring Location Page

USGS 410628073413301 CT- GW 21 GREENWICH, CT

Fairfield County, Connecticut
Latitude  41°06'28.4", Longitude  73°41'32.6" NAD83
Land-surface elevation 465.11 feet above NAVD88
The depth of the well is 350 feet below land surface.
The depth of the hole is 350 feet below land surface.
This well is completed in the New York and New England carbonate-rock aquifers (N400NYNECB) national aquifer.
This well is completed in the Carbonate Crystalline Bedrock (300CBCL) local aquifer.

Period of record
Begin Date End Date Levels
2001-10-05 2024-10-28 271

 
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