LOCATION.--Lat 42°06'52.3", long
78°48'12.8" referenced to North American Datum of
1983, Cattaraugus County, NY, Hydrologic Unit 05010001, on left
bank 810 ft upstream from Red House Bridge, 0.9 mile upstream
from Meetinghouse Run.
DRAINAGE AREA.--1,690 mi².
PERIOD OF RECORD.--September 1903 to September 1964.
Monthly discharge only for some periods, published in WSP 1305.
Records for September 1903 to September 1964 published as
“Allegheny River at Salamanca” (station 03011020).
June 2023 to current year (gage heights only).
GAGE.--Water-stage recorder and crest-stage gage. Datum
of gage is 1,322.75 ft above NAVD of 1988. From September 1903
to September 1964, at datum 4.39 ft higher (1,327.68 ft above
NGVD of 1929). Prior to Sept. 3, 1917, chain gage.
REMARKS.--Water Years 1903-64: Records excellent except
those for period of ice effect, which are fair.
Water Years 2023-24: Records good.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge,
49,100 ft³/s, Mar. 8, 1956, gage height, 19.50 ft, present
datum, minimum daily discharge, 80 ft³/s, Dec. 15-17,
1908. Minimum instantaneous gage height for the period
June 29, 2023 to present, 7.25 ft, Oct. 7, 2023.