LOCATION.--Lat 40°34'25", long 73°53'08" referenced to North American Datum of 1927, Kings County, NY, Hydrologic Unit 02030202, at Metropolitan Transportation Authority Marine Parkway Gil Hodges Memorial Bridge, near Floyd Bennett Field.
PERIOD OF RECORD.--Elevation October 2002 to current year. Discharge November 2014 to March 2019. Velocity records for November 2014 to March 2019 are unpublished and available in files of the Geological Survey.
GAGE.--Water-stage recorder. Datum of gage is NGVD of 1929. November 2014 to March 2019, acoustic velocity meter at current location.
REMARKS.--

Satellite and telephone elevation, velocity, and velocity-sensor depth telemeters at station. Gaps in elevation record caused by equipment malfunctions are filled with estimated data from nearby gage 01311850 Jamaica Bay at Inwood NY.

Flow at this site is affected significantly by astronomical tides. Discharge computed with a sidelooking acoustic velocity meter. Blanks in discharge tables are due to interruption of record. By convention, the U.S. Geological Survey has established ebb (seaward) flows as positive flows and flood (landward) flows as negative flows. Unfiltered 6-minute stage, velocity, and discharge data are available upon request.

EXTREMES FOR PERIOD OF RECORD.--

Maximum daily discharge, 47,400 ft³/s, Apr. 28, 2018, but may have been higher during period of missing record; maximum elevation, 11.75 ft, Oct. 29, 2012; minimum daily discharge, -22,400 ft³/s, Oct. 27, 2018, but may have been lower during period of missing record; minimum elevation, -5.23 ft, Mar. 9, 2005. 

EXTREMES OUTSIDE PERIOD OF RECORD.--Storm tide of Dec. 11, 1992, reached an elevation of 8.9 ft, from high-water mark at site 0.5 mi south-southeast.
PERIOD OF RECORD¹.--November 2014 to March 2019. Sampling depth records from November 2014 to March 2019 are unpublished and available in files of the Geological Survey.
PERIOD OF DAILY RECORD¹.--

WATER TEMPERATURE: November 2014 to March 2019.

SALINITY: November 2014 to March 2019.

TURBIDITY: November 2014 to March 2019.

INSTRUMENTATION¹.--Water-quality monitor provides 6-minute-interval readings collected near mid-water depth. Salinity record computed from specific-conductance readings.
REMARKS¹.--Satellite and telephone telemeter for water temperature, specific conductance, turbidity, and sampling depth at station. Interruptions of record were due to malfunction of water-quality monitor or sensors.
EXTREMES FOR PERIOD OF RECORD¹.--

WATER TEMPERATURE: Maximum 28.2 °C Aug. 14, 2016; Minimum -1.7 °C several times throughout the period of record.

SALINITY: Maximum 38.2 psu Feb. 22, 2016; Minimum 22.2 psu Nov. 17, 2018.

TURBIDITY: Maximum 59 FNU Sept. 14, 2016; Minimum <0.1 FNU several times throughout the period of record.

¹ Water-Quality Records

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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 1.10 ft. To convert data to MHHW datum subtract 3.75 ft. To convert data to MLLW datum add 1.84 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. MLLW is mean lower low water, which is a site-specific datum determined by averaging the lowest of the 2 low 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 Graph updated every 15 minutes

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Station image