USGS Home
Contact USGS
Search USGS

National Water Information System: Web Interface

USGS Water Resources   

Data Category:
Home Current Conditions Site Information Mapper Surface Water Groundwater Water Quality Water Use Revisions Geographic Area:
United States Alabama Alaska American Samoa Arizona Arkansas British Columbia California Canton and Enderbury Islands Colorado Connecticut Delaware Dist. of Columbia Florida Georgia Guam Hawaii Idaho Illinois Indiana Iowa Johnston Atoll Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Midway Islands Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Northern Mariana Islands Ohio Oklahoma Oregon Pennsylvania Puerto Rico Rhode Island Ryukyu Islands, Southern South Carolina South Dakota Swan Islands Tennessee Texas Trust Territories, Pacific Is U.S.Misc Caribbean Islands U.S.Misc Pacific Islands Utah Vermont Virgin Islands Virginia Wake Island Washington West Virginia Wisconsin Wyoming

Page Loading - Please Wait...

DESCRIPTION:

Latitude 40°39'12.87",   Longitude 73°43'18.46"   NAD83
Nassau County, New York   , Hydrologic Unit 02030202

Well depth: 517. feet
Hole depth: 550. feet
Land surface altitude: 7.7 feet above NGVD29.
Well completed in "Northern Atlantic Coastal Plain aquifer system" (S100NATLCP) national aquifer.
Well completed in "Magothy Aquifer" (211MAGT) local aquifer

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations     (availability statement)	2025-09-15	2025-11-21
Daily Data
Groundwater level above NAVD 1988, feet	2025-09-16	2025-11-20	66
Daily Statistics
Groundwater level above NAVD 1988, feet	2025-09-16	2025-11-20	66
Monthly Statistics
Groundwater level above NAVD 1988, feet	2025-09	2025-11
Annual Statistics
Groundwater level above NAVD 1988, feet	2025	2026
Field groundwater-level measurements	1953-01-28	2025-09-15	599
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1952-09-17	1996-05-02	53
Water-Year Summary	2005	2025	8
Revisions	Loading...
Additional Data Sources	Begin Date	End Date	Count

OPERATION:

Record for this site is maintained by the USGS New York Water Science Center

Email questions about this site to New York Water Science Center Water-Data Inquiries