LOCATION.--Lat 42°23'45", long 77°42'41" referenced to North American Datum of 1983, Steuben County, NY, Hydrologic Unit 02050104, on left bank 0.2 mi downstream from Arkport Dam, and 0.9 mi west of Arkport.
DRAINAGE AREA.--30.6 mi².
PERIOD OF RECORD.--January 1937 to current year.
REVISED RECORDS.--WSP 1552: 1952-57. WSP 2103: Drainage area.
GAGE.--Water-stage recorder and concrete control. Datum of gage is 1,202.85 ft above NGVD of 1929.
REMARKS.--Since March 1940, flows above 500 ft³/s controlled by detention in Arkport Reservoir (station 01521000). Water Year 2014-15: Records good except those for estimated daily discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, since construction of Arkport Reservoir in 1940, 1,740 ft³/s, Feb. 11, 1966, gage height, 4.17 ft; maximum gage height, 5.61 ft, Jan. 26, 1978 (ice jam); minimum discharge not determined.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of July 8, 1935, reached a discharge of 4,820 ft³/s, on basis of slope-area measurement of peak flow.
EXTREMES FOR PERIOD PRIOR TO REGULATION.--Maximum discharge, prior to construction of Arkport Reservoir in 1940, 2,000 ft³/s, Mar. 5, 1938, Feb. 20, 1939; maximum gage height, 5.63 ft, Feb.19, 1939 (ice jam); practically no flow July 30, 1938, Sept. 30, 1939 (result of construction operations).

Peak Flow and Stage Information