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LOCATION.--Lat 40°54'18.4", long 73°35'35.5" referenced to North American Datum of 1983, Nassau County, NY, Hydrologic Unit 02030201, at Sheep Lane bridge, in Lattingtown.
PERIOD OF RECORD.--December 2007 to current year.
GAGE.--Water-stage recorder. Datum of gage is NGVD of 1929.
REMARKS.--ELEVATION WY 2014 Records good, except those for Oct. 1-25, Nov. 15-30, Dec. 29 to Jan. 31, Feb. 4-12, Mar. 29 to July 22, which are fair, Feb. 13 to Mar. 1, July 23 to Aug 15, which are poor, and Mar.2-28 and Aug. 16 to Sept. 30, which were deleted.
EXTREMES FOR PERIOD OF RECORD.--Maximum elevation, 11.12 ft, Oct. 29, 2012; minimum elevation, -0.94 ft, Sept. 7, 2010.
EXTREMES OUTSIDE PERIOD OF RECORD.--Storm tide of Dec. 11, 1992, reached an elevation of 11.9 ft, from high-water mark at site 0.78 mi north-northeast.
PERIOD OF RECORD1.--December 2007 to current year. Sampling depth records for December 2007 to current year are unpublished and available in files of the Geological Survey.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 current year.
SALINITY: December 2007 to current year.
INSTRUMENTATION1.--Water-quality monitor provides 6-minute-interval readings collected from 0.5 ft above bottom. Salinity record computed from specific-conductance readings.
REMARKS1.--Satellite telemeter for water temperature, specific conductance, and sampling depth parameters at station discontinued October 1, 2011, to Sept. 30, 2012.
WATER TEMPERATURE WY 2016: Records excellent.
SALINITY WY 2015: Records excellent, except those for May 15 to June 14, July 8-21, which are good, June 15 to July 6, July 22-31, which are fair, Aug. 1-31, which are poor and Sept. 1-4 which were deleted.
EXTREMES FOR PERIOD OF RECORD1.--WATER TEMPERATURE: Maximum, 34.4 °C, July 18, 2013; minimum, -1.7 °C, Mar. 3, 2009, Mar. 4, 2014, Feb. 13 and 14 2016.
SALINITY: Maximum, 31 psu, Feb. 15, 2016; minimum, 4 psu, July 1, 2015.
1 Water-Quality Records

Peak Flow and Stage 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 4.83 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.

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

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

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This station managed by the NY Water Science Center Coram.

Available Parameters Available Period
All 9 Available Parameters for this site
00003 Sampling depth 2018-11-20  2019-03-20
00010 Temperature, water 2007-12-13  2019-03-20
00095 Specific cond at 25C 2007-12-13  2019-03-20
62619 Elevation, ocean/est, NGVD29 2007-12-13  2019-03-20
62619 Elevation, ocean/est, NGVD29, tidal prediction 2018-11-20  2019-09-30
62620 Elevation, ocean/est, NAVD88, NAVD88 2007-12-13  2019-03-20
62620 Elevation, ocean/est, NAVD88, tidal prediction, NAVD88 2018-11-20  2019-09-30
90860 Salinity, at 25C 2007-12-13  2019-03-20
99067 Observed elev diff 2018-11-20  2019-03-20

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Temperature, water, degrees Celsius

Most recent instantaneous value: 4.0 03-20-2019   10:42 EST
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