LOCATION.--Lat 43°12'40.2", long 76°17'13.6" referenced to North American Datum of 1983, Oswego County, NY, Hydrologic Unit 04140203, on left bank behind New York State Canal Corporation maintenance facility, 0.75 mi downstream from confluence of Seneca and Oneida Rivers, and 1.5 mi south of Phoenix.
DRAINAGE AREA.--4,953 mi².
PERIOD OF RECORD.--October 2007 to current year.
GAGE.--Acoustic velocity meter and water-stage recorder. Datum of gage is NGVD of 1929. To convert elevations to NAVD of 1988, subtract 0.59 ft.
REMARKS.--Flow regulated by Oswego (Barge) Canal Lock 1 and Eagle Creek Renewable Energy power station. 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. 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 summit level of Erie (Barge) Canal between New London and Utica. 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 Years 2014-17: Records good except those for estimated daily discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD.--Maximum daily discharge, 26,500 ft³/s, Apr. 29, 2011; minimum daily discharge, 201 ft³/s, Apr. 17, 2012. Maximum and minimum instantaneous discharges not determined.

Peak Flow and Stage Information

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