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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
404028073384601 Hempstead Lake Buoy at Lakeview, NY
LOCATION - Lat 40°40'28", long 73°38'46" referenced to North American Datum of 1983, Nassau County, NY, Hydrologic Unit is unknown, monitoring buoy situated in the southeast section of the lake.
WATER-QUALITY RECORDS
PERIOD OF RECORD - June 2022 to current year.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: June 2022 to current year. SPECIFIC CONDUCTANCE: June 2022 to current year. DISSOLVED OXYGEN: June 2022 to current year. TURBIDITY: June 2022 to current year. pH: June 2022 to current year.
INSTRUMENTATION - Water-quality monitor provides 15-minute-interval readings collected from a monitoring buoy that is situated in the southeast section of the lake.
REMARKS - Satellite telemeter for water temperature, specific conductance, dissolved oxygen, pH, and turbidity parameters at station.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Maximum, 31.8 °C, July 23, 2022; minimum, -0.2 °C, Dec. 25, 2022. SPECIFIC CONDUCTANCE: Maximum, 688 uS/cm at 25 °C, Mar. 3, 2024; minimum, 144 uS/cm at 25 °C, Sept. 29, 2023. DISSOLVED OXYGEN: Maximum, 15.2 mg/L, Jan. 25, 2024; minimum, 4.1 mg/L, Apr. 13, 2023. pH: Maximum, 9.7 pH units, Aug. 15, 2022; minimum, 6.7 pH units, Apr. 13, 2023. TURBIDITY: Maximum, 55.1 FNU, Aug. 26, 2022; minimum, 1.25 FNU, May 12, 2023.
