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USGS 01311875 ROCKAWAY INLET NEAR FLOYD BENNETT FIELD NY

PROVISIONAL DATA SUBJECT TO REVISION

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> Site Information
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 records published since October 2002 to current year. Velocity and velocity-sensor depth records for November 2014 to March 2019 are unpublished and available in files of the Geological Survey.
GAGE.--Water-stage recorder and acoustic velocity meter. Datum of gage is NGVD of 1929.
REMARKS.--

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

Streamflow at this site is affected significantly by astronomical tides. 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 discharge, 404,000 ft³/s, Mar. 17, 2016; maximum elevation, 11.75 ft, Oct. 29, 2012; minimum discharge, -383,000 ft³/s, Mar. 20, 2015; 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 Sampling depth records from November 2014 to March 2019 are unpublished and available in files of the Geological Survey.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 water temperature, specific conductance, turbidity, and sampling depth telemeters 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 Feb. 15-16, 21, 2015.

SALINITY: Maximum 38 psu Feb. 22, 2016; Minimum 25 psu Apr. 13, 2015

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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> Rating Information
> Additional Site Information

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

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
  
2014-11-21  2019-03-18
2014-11-06  2019-03-18
2014-11-21  2019-03-18
2007-10-01  2020-10-01
2020-06-03  2020-12-31
2007-10-01  2020-10-01
2020-06-03  2020-12-31
2014-11-21  2019-03-18
2014-11-08  2019-03-17
2014-11-21  2019-03-18
2020-06-03  2020-10-01
2014-11-21  2019-03-18







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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.