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> Site Information
LOCATION.--Lat 40°57'46.3", long 73°08'35.4" referenced to North American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030201, on foot bridge in Flax Pond State Tidal Wetlands, in Old Field.
PERIOD OF RECORD.--December 2007 to May 2019 (discontinued).
GAGE.--Water-stage recorder. Datum of gage is NGVD of 1929.
REMARKS.--Satellite telemeter for elevation at station.  Gaps in record caused by equipment malfunctions are filled with estimated data from nearby gage 01302600 West Pond at Glen Cove, NY and 01302845 Frost Creek at Sheep LN Bridge at Lattingtown, NY.
EXTREMES FOR PERIOD OF RECORD.--Maximum elevation, 10.35 ft, Oct. 29 2012; minimum elevation, -0.15 ft, Mar. 2, 2015.
EXTREMES OUTSIDE PERIOD OF RECORD.--Storm tide of Dec. 11, 1992, reached an elevation of 9.9 ft, from high-water mark at site 1.1 mi southeast.
PERIOD OF RECORD1.--December 2007 to May 2019 (discontinued). Sampling depth records for December 2007 to current year are unpublished and available in files of the Geological Survey.
PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: December 2007 to May 2019. SALINITY: December 2007 to May 2019. DISSOLVED OXYGEN: April 2008 to April 2011, and October 2013 to May 2019. pH: April 2008 to May 2019. TURBIDITY: April 2008 to April 2011, and October 2013 to May 2019.
INSTRUMENTATION1.--Water-quality monitor provides 6-minute-interval readings collected from 1.6 ft above bottom. December 2007 to April 2008, water-quality monitor readings collected from 0.5 ft above bottom. Salinity record computed from specific-conductance readings.
REMARKS1.--Satellite telemeter for water temperature, specific conductance, dissolved oxygen, pH, turbidity, and sampling depth parameters at station. Station discontinued from April 2011 to October 2013.  Station moved to new walking bridge from April 2018 to January 2019. Station discontinued May 2019. Other interruptions of record were due to malfunction of water-quality monitor or sensors.
EXTREMES FOR PERIOD OF RECORD1.--WATER TEMPERATURE: Maximum, 33.6 °C, July 7, 2010; minimum, -1.8 °C, Feb. 10, 11, 2008, Dec. 28, Jan. 23, Feb. 9, 2011, Jan. 23, Feb. 18, 2013, Jan. 1, 2018. SALINITY: Maximum, 39.4 psu, Jan. 08, 2018; minimum, 16 psu, Aug. 13, 2014. DISSOLVED OXYGEN: Maximum, 19.3 mg/L, Jan. 9, 2014; minimum, 0.8 mg/L, Aug. 13, 15, 2016. pH: Maximum, 8.5 standard units, June 10, 2008, Feb. 13, 2012; minimum, 6.7 standard units, Aug. 12-13, 2012. TURBIDITY: Maximum, 780 FNU, Jan. 23, 2016; minimum, <0.1 FNU several days each year 2008-18.
1 Water-Quality Records
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> Additional Site Information

NAVD 1988 Datum Conversion Information

Elevation observations and tidal predictions for this station are reported to NGVD 1929. To convert data to NAVD 1988 subtract 1.08 ft. To convert data to MHHW datum subtract 4.56 ft. These corrections vary from site to site.

NGVD 1929 is the National Geodetic Vertical Datum of 1929, formerly called "mean sea level" or "Sea Level Datum of 1929." NGVD 1929 was a general adjustment of the first-order level nets fit to mean sea level at 26 tide gages in the US and Canada.
NAVD 1988 is the North American Vertical Datum of 1988, which is a geodetic datum derived from a general adjustment of the first-order level nets fit to 1 tide gage in eastern Canada.
MHHW is mean higher high water, which is a site-specific datum determined by averaging the highest of the 2 high tides that occur each day over a 19-year tidal epoch. For tide gages with less than 19 years of record, this datum is estimated by correlation with long-term tide gages.

Additional sensor graph(s) available (click on graph or sensor name)

Water elevation, astronomical-tide elevation, and residual water level

Water elevation, astronomical-tide elevation, and residual water level Graph updated every 15 minutes

Alternate link to graph

Gage PhotoStation image


This station managed by the NY Water Science Center Coram.

Available Parameters Available Period
2008-04-08  2020-09-22
2008-05-13  2020-09-16
2008-04-08  2020-09-16
2008-04-08  2020-09-16
2007-12-20  2020-09-22
2007-12-20  2020-09-22
2008-04-08  2018-04-23
2018-12-18  2020-09-16
2008-05-13  2020-09-16


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Summary of all available data for this site
Instantaneous-data availability statement
*** There are no data available on the Waterdata system for the time period specified,
    although data may be available in the files of the local USGS office operating the station.