LOCATION.--Lat 41°59'05", long
76°30'04" referenced to North American Datum of 1983,
Bradford County, PA, Hydrologic Unit 02050103, on left bank 0.2
mi upstream from Cayuta Creek, 0.4 mi upstream from bridge on
East Lockhart Street at Sayre, Pa., 1 mi downstream from New
York-Pennsylvania State line, and 2 mi southeast of
Waverly.
DRAINAGE AREA.--4,773 mi².
PERIOD OF RECORD.--February 1937 to March 1995, annual
maximum only--1995-2000, October 2000 to current year.
REVISIONS HISTORY.--WSP 2103: Drainage area.
GAGE.--Water-stage recorder. Datum of gage is 743.96 ft
above NGVD of 1929 (levels by Corps of Engineers) and 743.43
above NAVD of 1988 (VERTCON). Prior to November 1939, at datum
1.00 ft higher.
REMARKS.--Minor regulation by upstream lakes and
reservoirs.
Water Years 2014-19: Records good except those for estimated
daily discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge,
167,000 ft³/s, Sept. 8, 2011, gage height 26.67 ft, from
floodmark in gage house; minimum discharge, 224 ft³/s, Sept.
23, 1964.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood in March 1936
reached a stage of about 21.4 ft, datum then in use, from flood
profile, discharge, 128,000 ft³/s.
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