PROVISIONAL DATA SUBJECT TO REVISION
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LOCATION.--Lat 42°47'08.5", long
73°42'37.5" referenced to North American Datum of
1983, Albany County, NY, Hydrologic Unit 02020004, on right
bank 250ft upstream from the School Street powerplant intake in
Cohoes, and 0.9 miles downstream of the beginning of the
diversion.
DRAINAGE AREA.--1.67 mi².
PERIOD OF RECORD1.--February 2021 to current year.
PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: February 2021 to current year.
SPECIFIC CONDUCTANCE: February 2021 to current year.
pH: February 2021 to current year.
DISSOLVED OXYGEN: February 2021 to current year.
TURBIDITY: February 2021 to current year.
CHLOROPHYLL FLUORESCENCE: February 2021 to current year.
PHYCOCYANIN FLUORESCENCE: February 2021 to current year.
DISSOLVED ORGANIC MATTER FLUORESCENCE: February 2021 to current year.
INSTRUMENTATION1.--A continuous water-quality monitor with water temperature, specific conductance, pH, dissolved oxygen, turbidity, chlorophyll fluorescence, phycocyanin fluorescence, and dissolved organic carbon fluorescence provides 15-minute-interval readings.
EXTREMES FOR PERIOD OF RECORD1.--WATER TEMPERATURE: Maximum, 28.8°C, Aug. 8, 2022; minimum -0.1°C, on many days during winter periods.
SPECIFIC CONDUCTANCE: Maximum, 601 uS/cm @ 25°C, Mar. 3. 2021; minimum, 180 uS/cm @ 25°C, Dec. 20, 2023.
pH: Maximum, 9.3, May 29, 2023; minimum, 7.2, Aug. 21, 22, 2022.
DISSOLVED OXYGEN: Maximum, 10.4 mg/L, Oct. 25, 27, 28, 2022; minimum, 2.3 mg/L Aug. 21, 2022.
TURBIDITY: Maximum, 656 FNU, Apr. 9, 2022, minimum, <0.3 FNU, on many days. [<, actual value is known to be less than the value shown]
1 Water-Quality Records
DRAINAGE AREA.--1.67 mi².
PERIOD OF RECORD1.--February 2021 to current year.
PERIOD OF DAILY RECORD1.--WATER TEMPERATURE: February 2021 to current year.
SPECIFIC CONDUCTANCE: February 2021 to current year.
pH: February 2021 to current year.
DISSOLVED OXYGEN: February 2021 to current year.
TURBIDITY: February 2021 to current year.
CHLOROPHYLL FLUORESCENCE: February 2021 to current year.
PHYCOCYANIN FLUORESCENCE: February 2021 to current year.
DISSOLVED ORGANIC MATTER FLUORESCENCE: February 2021 to current year.
INSTRUMENTATION1.--A continuous water-quality monitor with water temperature, specific conductance, pH, dissolved oxygen, turbidity, chlorophyll fluorescence, phycocyanin fluorescence, and dissolved organic carbon fluorescence provides 15-minute-interval readings.
EXTREMES FOR PERIOD OF RECORD1.--WATER TEMPERATURE: Maximum, 28.8°C, Aug. 8, 2022; minimum -0.1°C, on many days during winter periods.
SPECIFIC CONDUCTANCE: Maximum, 601 uS/cm @ 25°C, Mar. 3. 2021; minimum, 180 uS/cm @ 25°C, Dec. 20, 2023.
pH: Maximum, 9.3, May 29, 2023; minimum, 7.2, Aug. 21, 22, 2022.
DISSOLVED OXYGEN: Maximum, 10.4 mg/L, Oct. 25, 27, 28, 2022; minimum, 2.3 mg/L Aug. 21, 2022.
TURBIDITY: Maximum, 656 FNU, Apr. 9, 2022, minimum, <0.3 FNU, on many days. [<, actual value is known to be less than the value shown]
1 Water-Quality Records
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