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Tidal predictions and the observed elevation difference between observed and predicted tides have been discontinued as of 10/1/2022.

Important Legacy real-time page

USGS Parameter Group Data Types Start Date End Date
Information Unit Values 2020-12-08 2023-12-09
Physical Daily Values, Unit Values 2017-04-05 2023-12-09
n/a USGS Annual Water Data Reports Site 2017-01-01 2022-01-01
Water Data for the Nation inventory

Monitoring location 01306402 is associated with an Estuary in Suffolk County, New York. Current conditions of Estuary or ocean water surface elevation above NAVD 1988, Estuary or ocean water surface elevation above NGVD 1929, Salinity, and more are available. Water data back to 2017 are available online.

Metadata Element Location Metadata Metadata Code
Agency
U.S. Geological Survey USGS
Site identification number
01306402 n/a
Site name
GREAT SOUTH BAY AT WEST SAYVILLE NY n/a
Site type
Estuary
ES
DMS latitude 404315.8 n/a
DMS longitude 0730528.5 n/a
Decimal latitude 40.72105556 n/a
Decimal longitude -73.09125 n/a
Latitude-longitude method
Interpolated from Digital MAP. N
Latitude-longitude accuracy
Accurate to + or - .1 sec (Differentially-Corrected GPS). 1
Latitude-longitude datum
North American Datum of 1983 NAD83
Decimal Latitude-longitude datum North American Datum of 1983 NAD83
District
New York 36
State
New York 36
County
Suffolk County 103
Country US n/a
Land net location description n/a
Name of location map SAYVILLE, NY n/a
Scale of location map 24000 n/a
Altitude of Gage/land surface 0 n/a
Method altitude determined Interpolated from topographic map. M
Altitude accuracy 1 n/a
Altitude datum
National Geodetic Vertical Datum of 1929 NGVD29
Subbasin hydrologic unit
Southern Long Island 02030202
Drainage basin
n/a
Topographic setting
n/a
Flags for instruments at site NNNNYNNYNNNNNNNNNNNNNNNNNNNNNN n/a
Date of first construction
n/a
Date site established or inventoried 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
Data reliability
n/a
Data-other GW files n/a
National aquifer n/a
Local aquifer n/a
Local aquifer type
n/a
Well depth n/a
Hole depth
n/a
Source of depth data n/a
Project number n/a

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