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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
01306402 GREAT SOUTH BAY AT WEST SAYVILLE NY
LOCATION - Lat 40°43'15.8", long 73°05'28.5" referenced to North American Datum of 1983, Suffolk County, NY, Hydrologic Unit 02030202, at West Sayville Boat Basin, in West Sayville.
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 2017 to current year.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929.
REMARKS - Satellite and telephone elevation telemeters at station.
EXTREMES OUTSIDE PERIOD OF RECORD - Storm tide of Oct. 30, 2012, reached an elevation of 6.5 ft, from high-water mark at site 0.1 mi north.
WATER-QUALITY RECORDS
PERIOD OF RECORD - April 2017 to current year. Sampling depth records for April 2017 to current year are unpublished and available in files of the Geological Survey.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: April 2017 to current year. SALINITY: April 2017 to current year.
INSTRUMENTATION - Water-quality monitor provides 6-minute-interval readings collected from 0.5 ft above bottom. Salinity record computed from specific-conductance readings.
REMARKS - Satellite and telephone telemeters for water temperature, specific conductance, and sampling depth parameters at station.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Maximum, 30.6 °C, July 22, 2019; minimum, -1.6 °C, Dec. 29, 30, 2017, Jan. 6, 15, 16, 2018, and Jan. 29, 30, 2022. SALINITY: Maximum, 30.8 psu, Sept. 24, 2017; minimum, 18.9 psu, June 25, 2019.
