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ALL DATA ARE EASTERN STANDARD TIME

USGS 01311875 ROCKAWAY INLET NEAR FLOYD BENNETT FIELD NY

PROVISIONAL DATA SUBJECT TO REVISION

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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.--November 2014 to current year. Elevation records published since October 2002. Velocity and velocity-sensor depth records for November 2014 to current year are unpublished and available in files of the Geological Survey.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.--

ELEVATION WY 2013: Records excellent, except those for Oct. 1-28, Oct. 30 to Jan. 17, Feb. 8-26, Feb. 28 to Mar. 6, Mar. 11 to Apr. 17, Aug 6-9, and Aug. 12 to Sept. 30, which are good; and for Oct. 29, Feb. 27, and Mar. 7-10, which are fair. Satellite and telephone elevation, velocity, and velocity-sensor depth telemeters at station.

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 current year. Sampling depth records for November 2014 to current year are unpublished and available in files of the Geological Survey.
PERIOD OF DAILY RECORD1.-- WATER TEMPERATURE: November 2014 to current year
SALINITY: November 2014 to current year
TURBIDITY: November 2014 to current year
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.
WATER TEMPERATURE WY 2016: Records excellent
SALINITY WY 2016: Records excellent
TURBIDITY WY 2016: Records excellent
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

Peak Flow and Stage 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
All 13 Available Parameters for this site
  
00003 Sampling depth, monitor 2017-08-15  2017-12-13
00010 Temperature, water, monitor 2014-11-21  2017-12-13
00060 Discharge 2014-11-06  2017-10-31
00095 Specific cond at 25C, monitor 2014-11-21  2017-12-13
62619 Elevation, ocean/est 2007-10-01  2017-12-13
62619 Elevation, ocean/est, tidal prediction 2017-08-15  2018-09-30
63680 Turbidity, Form Neph, monitor 2014-11-21  2017-12-13
72137 Discharge,tide fltrd 2014-12-14  2017-10-28
72147 Depth, sensor [ADVM] 2017-08-15  2017-10-31
72255 Mean water velocity [66-164 ft from N. bridge tower] 2017-08-15  2017-10-31
90860 Salinity, at 25C, monitor 2014-11-21  2017-12-13
99067 Observed elev diff 2017-08-15  2017-12-13
99409 Susp sediment,wu,est 2014-11-21  2017-12-13

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Summary of all available data for this site
Instantaneous-data availability statement


Sampling depth, feet, monitor

Most recent instantaneous value: 17.2 12-13-2017   03:54 EST
Graph of  Sampling depth, feet

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Temperature, water, degrees Celsius, monitor

Most recent instantaneous value: 9.2 12-13-2017   03:54 EST
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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, monitor

Most recent instantaneous value: 46400 12-13-2017   03:54 EST
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Estuary or ocean water surface elevation above NGVD 1929, feet

Most recent instantaneous value: 3.31 12-13-2017   03:48 EST
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Estuary or ocean water surface elevation above NGVD 1929, feet, tidal prediction

Most recent instantaneous value: 3.07 12-13-2017   04:48 EST
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Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU), monitor

Most recent instantaneous value: 3.7 12-13-2017   03:54 EST
Graph of  Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)

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Salinity, water, unfiltered, practical salinity units at 25 degrees Celsius, monitor

Most recent instantaneous value: 30.1 12-13-2017   03:54 EST
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Difference between observed and predicted water surface elevation, feet

Most recent instantaneous value: -0.00 12-13-2017   03:48 EST
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Suspended sediment concentration, water, unfiltered, estimated by regression equation, milligrams per liter

Most recent instantaneous value: 7.3 12-13-2017   03:54 EST
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