USGS Water-Year Summary 2021
04249000 OSWEGO RIVER AT LOCK 7, OSWEGO, NY
LOCATION - Lat 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 Oswego (Barge) Canal Lock 7 in Oswego, 0.8 mi upstream from mouth.
DRAINAGE AREA - 5,100 mi².
- WDR NY 78-1: Drainage area.
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 used.
GAGE - Water-stage recorder. Datum of gage is 245.12 ft above NGVD of 1929 and 244.47 ft above NAVD of 1988. Prior to October 1933, nonrecording gage at site about 6 mi upstream at different datum.
COOPERATION - Records of lockages at Lock 7 provided by New York State Canal Corporation, records of elevations of Lake Ontario provided by U.S. Army Corps of Engineers, and records of daily discharges for Oswego River High Dam upstream provided by Niagara Mohawk Power Corp.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 37,500 ft³/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 RECORD - WATER TEMPERATURE: 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.
COOPERATION - In cooperation with the U.S. Environmental Protection Agency's Great Lakes Restoration Initiative (GLRI).
INSTRUMENTATION - Refrigerated automatic sampler since July 2010. Multi-parameter water-quality sonde measures water temperature, specific conductance, pH, dissolved oxygen, and turbidity at 15-minute intervals since December 2010.
EXTREMES FOR PERIOD OF DAILY RECORD -
WATER TEMPERATURE: Maximum, 30.2°C, July 16, 2018; minimum, -0.1°C, on several days during winter periods.
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, 16.6 mg/L, Jan. 15, 2018; 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 malfunction].