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DESCRIPTION:

Latitude 40°51'23.0",   Longitude 73°36'05.8"   NAD83
Nassau County, New York   , Hydrologic Unit 02030201

Well depth: 500.0 feet
Hole depth: 500.0 feet
Land surface altitude: 129.7 feet above NAVD88.
Well completed in "Northern Atlantic Coastal Plain aquifer system" (S100NATLCP) national aquifer.
Well completed in "Lloyd Aquifer" (211LLYD) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2025-08-18	2025-08-18
Field groundwater-level measurements	1991-03-20	2025-08-18	279
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1989-06-30	1995-05-24	7
Revisions	Loading...
Additional Data Sources	Begin Date	End Date	Count
Annual Water-Data Report (pdf)  **offsite**	2005	2011	7

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