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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
01376520 HUDSON RIVER AT PIER 25 AT NEW YORK NY
LOCATION - Lat 40°43'17.5", long 74°00'56.2" referenced to North American Datum of 1983, New York County, NY, Hydrologic Unit 02030101, on left bank at Pier 25, 1.3 mi upstream of mouth, 9.8 mi downstream of George Washington Bridge on US Highway 95, and 12.1 mi downstream of Harlem River in New York, New York.
WATER-QUALITY RECORDS
PERIOD OF RECORD - July 2019 to current year.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: July 2019 to current year.
SPECIFIC CONDUCTANCE: July 2019 to current year.
SALINITY: July 2019 to current year.
pH: July 2019 to current year.
DISSOLVED OXYGEN: July 2019 to current year.
TURBIDITY: July 2019 to current year.
SPECIFIC CONDUCTANCE: July 2019 to current year.
SALINITY: July 2019 to current year.
pH: July 2019 to current year.
DISSOLVED OXYGEN: July 2019 to current year.
TURBIDITY: July 2019 to current year.
COOPERATION - Maintained by the Hudson River Environmental Conditions Observing System in cooperation with the Hudson River Park Trust.
INSTRUMENTATION - A multi-parameter water-quality sonde measures water temperature, specific conductance, pH, dissolved oxygen, and turbidity at 15-minute intervals since July 2019. Salinity record computed from specific-conductance readings.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 26.7°C, July 17, 2023; minimum, 0.5°C, Feb. 21, 2021.
SPECIFIC CONDUCTANCE: Maximum, 44,700 uS/cm @ 25°C, Aug. 11, 2022; minimum, 4,590 uS/cm @ 25°C, Apr. 4, 2022.
SALINITY: Maximum, 28.9 psu, Aug. 11, 2022; minimum, 2.4 psu, Apr. 4, 2022.
pH: Maximum, 8.3, Nov. 8, 16, 2019; minimum, 7.4, Aug. 2, 4, 5, 6, 2019.
DISSOLVED OXYGEN: Maximum, 13.4 mg/L, Dec. 19, 2019, Feb. 8, 2022; minimum, 3.5 mg/L, Aug. 31, 2022.
TURBIDITY: Maximum, 61.5 FNU, Feb. 5, 2021; minimum, <0.3 FNU, Feb. 28, 2021. [<, actual value is known to be less than the value shown]
SPECIFIC CONDUCTANCE: Maximum, 44,700 uS/cm @ 25°C, Aug. 11, 2022; minimum, 4,590 uS/cm @ 25°C, Apr. 4, 2022.
SALINITY: Maximum, 28.9 psu, Aug. 11, 2022; minimum, 2.4 psu, Apr. 4, 2022.
pH: Maximum, 8.3, Nov. 8, 16, 2019; minimum, 7.4, Aug. 2, 4, 5, 6, 2019.
DISSOLVED OXYGEN: Maximum, 13.4 mg/L, Dec. 19, 2019, Feb. 8, 2022; minimum, 3.5 mg/L, Aug. 31, 2022.
TURBIDITY: Maximum, 61.5 FNU, Feb. 5, 2021; minimum, <0.3 FNU, Feb. 28, 2021. [<, actual value is known to be less than the value shown]
