LOCATION.--Lat 43°10'28.9", long
78°41'20.6" referenced to North American Datum of
1983, Niagara County, NY, Hydrologic Unit 04130001, on left
bank adjacent to floodwall, in Lockport, 880 ft upstream of
Halls Waste Weir, and 1,140 ft upstream from Mill Street Lift
Bridge.
DRAINAGE AREA.--See REMARKS.
PERIOD OF RECORD.--March 2021 to current year
(navigation seasons only).
REVISIONS HISTORY.--Specific conductance records for the
period Aug. 16, to Dec. 1, 2022, were revised on Jan. 3, 2023,
a calibration error was discovered which changed the required
data correction.
GAGE.--Acoustic velocity meter, water-stage recorder,
and crest-stage gage. Datum of gage is 502.10 ft above NAVD of
1988.
REMARKS.--This record represents net diversion from
Niagara River basin into Genesee and Oswego River basin through
Erie (Barge) Canal. Water Years 2021-22: Records fair except
those for estimated daily discharges and discharges below 200
ft³/s, which are poor.
PERIOD OF RECORD1.--May 2021 to current year
(navigation seasons only).
PERIOD OF DAILY RECORD1.--WATER TEMPERATURE:
May 2021 to current year (navigation seasons only).
SPECIFIC CONDUCTANCE: May 2021 to current year (navigation
seasons only).
DISSOLVED OXYGEN: May 2021 to current year (navigation seasons
only).
TURBIDITY: May 2021 to current year (navigation seasons
only).
INSTRUMENTATION1.--A multi-parameter
water-quality sonde measures water temperature, specific
conductance, dissolved oxygen, and turbidity at 15-minute
intervals since May 2021.
COOPERATION1.--In cooperation with NYS
Thruway Authority, Office of Canals.
EXTREMES FOR PERIOD OF DAILY RECORD1.--WATER
TEMPERATURE: Maximum, 26.9°C, Aug. 29, 30, 2021; minimum,
1.8°C, Nov. 23, 2022.
SPECIFIC CONDUCTANCE: Maximum, 979 uS/cm @ 25°C, July 3, 2024;
minimum, 220 uS/cm @ 25°C, July 22, 2021.
DISSOLVED OXYGEN: Maximum, 15.9 mg/L, July 21, 2024; minimum,
5.5 mg/L, July 23, 2021.
TURBIDITY: Maximum, 216 FNU, Nov. 15, 2022; minimum, 2.6 FNU,
July 31, Aug. 1, 2024.
1 Water-Quality Records
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![Graph of Stream water level elevation above NAVD 1988, in feet, [NAVD88]](https://natwebsdww01.cr.usgs.gov/nwisweb/data/img/USGS.04218601.306719.63160..20241126.20241203..0..gif)
