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USGS 404028073384601 Hempstead Lake Buoy at Lakeview, NY

PROVISIONAL DATA SUBJECT TO REVISION

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> Site Information
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.
PERIOD OF RECORD1.--June 2022 to current year.
PERIOD OF DAILY RECORD1.--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.
INSTRUMENTATION1.--Water-quality monitor provides 15-minute-interval readings collected from a monitoring buoy that is situated in the southeast section of the lake.
REMARKS1.--Satellite telemeter for water temperature, specific conductance, dissolved oxygen, pH, and turbidity parameters at station.
EXTREMES FOR PERIOD OF RECORD1.--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.
1 Water-Quality Records
> Rating Information
Available Parameters Available Period
  
2022-06-28  2024-11-21
2022-06-28  2024-11-21
2022-06-28  2024-11-21
2022-06-28  2024-11-21
2022-06-28  2024-11-21







 (7)
 

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


Temperature, water, degrees Celsius

Most recent instantaneous value: 10.7 11-21-2024   11:00 EST
Graph of  Temperature, water, degrees Celsius

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Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

Most recent instantaneous value: 477 11-21-2024   11:00 EST
Graph of  Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

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Dissolved oxygen, water, unfiltered, milligrams per liter

Most recent instantaneous value: 11.5 11-21-2024   11:00 EST
Graph of  Dissolved oxygen, water, unfiltered, milligrams per liter

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pH, water, unfiltered, field, standard units

Most recent instantaneous value: 7.4 11-21-2024   11:00 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)

Most recent instantaneous value: 4.7 11-21-2024   11:00 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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