Important for you to know:

How are we doing? We want to hear from you. Take our quick survey to tell us what you think.
Scheduled Maintenance Notice
USGS will be performing maintenance on the time series data processing system beginning at 09:00 EDT on September 10, 2026. During this period, delivery of the latest time series data will be delayed. The maintenance is expected to finish within 2 hours, after which all backlogged time series data will be processed and delivered to WDFN web portals and APIs.

Available data

Select data types to graph from categories based on the way the data were collected.

1 data types available - data from 2015-08-28 to 2023-10-02

1 data types available - data from 2015-08-28 to 2023-10-01

3 data types available - data from 1975-12-29 to 2026-04-02

175 Observed properties (data types) available - with data from 1976-06-23 to 2021-10-04

9 Sampling activities

1 data types available - data from 2015-08-28 to 2023-10-01

Zoom out to see link to My Favorites

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	404740073285701	n/a
Location name	N 9089. 1	n/a
Site type	Well	GW
Decimal latitude (WGS84)	40.7886666666667	n/a
Decimal longitude (WGS84)	-73.48225	n/a
Latitude-longitude method	Interpolated from digital map	N
Latitude-longitude accuracy	Accurate to + or - .1 sec (Differentially-Corrected GPS).	1
District	New York	36
State	New York	36
County	Nassau County	059
Country	United States of America	n/a
Altitude of gage/land surface	173 feet	n/a
Method altitude determined	Level or other surveyed method.	L
Altitude accuracy	0.1 feet	n/a
Altitude datum	National Geodetic Vertical Datum of 1929	NGVD29
Subbasin hydrologic unit	Southern Long Island	02030202
Drainage basin		n/a
Date of first construction	19751119	n/a
Drainage area		n/a
Contributing drainage area		n/a
Time zone abbreviation	EST	n/a
Site honors Daylight Saving Time	N	n/a
National aquifer	Northern Atlantic Coastal Plain aquifer system	S100NATLCP
Local aquifer	Magothy Aquifer	211MAGT
Local aquifer type	Unconfined single aquifer	U
Well depth	178 feet	n/a
Hole depth		n/a
Source of depth data		n/a