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.
REVISIONS HISTORY.--WSP 1552: 1952-57. WSP 2103:
Drainage area. 2009 (M).
GAGE.--Water-stage recorder and concrete control. Datum
of gage is 1,202.85 ft above NGVD of 1929 and 1,202.66 ft above
NAVD of 1988.
REMARKS.--Since March 1940, flows above 500 ft³/s
controlled by detention in Arkport Reservoir (station
01521000).
Water Years 2014-15: Records good except those for estimated
daily discharges, which are fair.
Water Years 2016-19: Records good except those for estimated
daily discharges, which are poor.
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).