Funding for this site is provided by:
43°27'06", long 76°30'19" referenced to North
American Datum of 1983, Oswego County, NY, Hydrologic Unit 04140203, on
right bank at New York State Barge Canal (Oswego Canal) Lock 7 in
Oswego, 0.8 mi upstream from mouth.
PERIOD OF RECORD.--
October 1900 to April 1906, October 1933 to
current year. Monthly discharge only for some periods, published in WSP
1307. Prior to January 1904, published as "above Minetto" or
"near Minetto." January 1904 to April 1906, published as
"at Battle Island." Records for April 1897 to September 1900,
published in WSP 65 and for October 1927 to September 1928, published
in WSP 644, have been found to be unreliable and should not be
WDR NY 78-1: Drainage area.
Water-stage recorder. Datum of gage is 245.12 ft above
NGVD of 1929. Prior to October 1933, nonrecording gage at site about 6
mi upstream at different datum.
Records of lockages at Lock 7 provided by New York
State Thruway Authority, record of elevations of Lake Ontario by U.S.
Army Corps of Engineers, daily discharge records for Oswego River High
Dam upstream by Niagara Mohawk Power Corp.
Prior to 1933 and subsequent to 1972, flow in Oswego
(Barge) Canal not included. A large amount of natural storage and some
artificial regulation is afforded by the many large lakes and the Erie
(Barge) and Oswego (Barge) Canal systems in the river basin. Large
diurnal fluctuations at low and medium flow caused by powerplants
upstream from station. Oswego River basin receives water from Erie
(Barge) Canal through Lock 32 near Pittsford. Water may be diverted
into or received from Mohawk River basin through Erie (Barge) Canal
between New London and Utica. During part of year, entire flow from
of Mud Creek drainage area may be diverted from
Chemung River basin into Keuka Lake in Oswego River basin. Nearly all
of the flow from 14 mi2
of the Tioughnioga River basin may
be diverted into De Ruyter Reservoir, in Oswego River basin. Water Year
2014: Records good except those for estimated daily discharges, which
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 37,500
/s, Mar. 28, 1936, includes daily mean discharge of
canals; maximum gage height, 13.46 ft, Apr. 10, 1940; minimum discharge
(river only), 30 ft3
/s, Nov. 6, 1944.
PERIOD OF DAILY RECORD1.--
December 2010 to current year.
SPECIFIC CONDUCTANCE: December 2010 to current year. pH: December 2010
to current year. DISSOLVED OXYGEN: December 2010 to current year.
TURBIDITY: December 2010 to current year.
ISCO refrigerated automatic
sampler since July 2010. A YSI 6920-V2 continuous monitor with water
temperature, specific conductance, pH, dissolved oxygen and turbidity
since December 2010 provides 15-minute-interval readings.
In cooperation with the U.S.
Environmental Protection Agency's Great Lakes Restoration
YSI 6920-V2 turbidity record is subject to
low end adjustments when values are below zero and 0.0 FNU may have
occurred on days of missing record or instrument malfunction.
EXTREMES FOR PERIOD OF DAILY RECORD1.--
TEMPERATURE: Maximum, 29.5°C, July 17, 2012; minimum, -0.1°C, on
several days during winter period.
SPECIFIC CONDUCTANCE: Maximum, 1,080 uS/cm @ 25°C, Feb. 20, 2011;
minimum, 388 uS/cm @ 25°C, May 2, 2011. pH: Maximum, 9.2, on several
days; minimum, 7.3, Jun. 28, 2012. DISSOLVED OXYGEN: Maximum, 15.9
mg/L, Feb. 26, 28, Apr. 17, 2012; minimum, 3.3 mg/L, Aug. 6, 2012.
TURBIDITY: Maximum, 62 FNU, Sept. 7, 2011; minimum, 0.0 FNU, Sept. 14,
2012 [0.0 FNU may have occurred on days of missing record or instrument
1 Water-Quality Records
Peak Flow and Stage Information