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This station is operated in cooperation
with:
National Weather Service
U.S. Army Corps of Engineers - Buffalo District
U.S. Geological Survey
LOCATION.--Lat 42°34'13", long 78°02'33"
referenced to North American Datum of 1927, Wyoming County, NY,
Hydrologic Unit 04130002, on left bank at Portageville, 500 ft
downstream from bridge on State Highway 436, 800 ft upstream from
abandoned railroad bridge piers, 0.9 mi upstream from Upper Falls, and
89.8 mi upstream from mouth.
DRAINAGE AREA.--984 mi2.
PERIOD OF RECORD.--August 1908 to current year. Prior to
December 1945, published as "at St. Helena". Records
published for both sites December 1945 to September 1950.
REVISED RECORDS.--WSP 264: 1908. WSP 564: 1916(M). WSP 2112; WDR
NY-82-3: Drainage area. WDR NY-72-01: 1950(M), 1951(M), 1956(M),
1959(M), 1964(M), 1967(M).
GAGE.--Water-stage recorder. Datum of gage is 1,080.00 ft above
NGVD of 1929 (levels by Corps of Engineers). Prior to Aug. 24, 1911,
nonrecording gage and Aug. 24, 1911 to Sept. 30, 1946, water-stage
recorder at site 8 mi downstream at different datum. Oct. 1, 1946 to
June 21, 1972, water-stage recorder at site 1,200 ft downstream at
datum 2.60 ft higher (destroyed by flood of June 1972). June 21, 1972
to July 11, 1972, nonrecording gage at same site and datum. July 12,
1972 to May 18, 1973, nonrecording gage at site 500 ft upstream at
datum 11.48 ft higher.
REMARKS.--Records fair except those for estimated daily
discharges, which are poor. Since July 1928, some seasonal regulation
by Rushford Lake. Diurnal fluctuation at low flow caused by powerplant.
Monthly figures of discharge and runoff 1952 to 1966 water years
adjusted for change in contents in Rushford Lake. Telephone gage-height
telemeter and satellite gage-height and precipitation telemeter at
station.
Peak Flow and Stage Information
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U.S. Department of the Interior |
U.S. Geological Survey