Funding for this site is provided by:
42°08'47.1", long 77°03'27.0" referenced to North
American Datum of 1983, Steuben County, NY, Hydrologic Unit 02050105,
on right bank adjacent to Corning Glass Works power plant, 500 ft
downstream from Bridge Street, 1.7 mi downstream from Cohocton River,
PERIOD OF RECORD.--
Occasional discharge measurements, water
years 1918, 1946, 1968-69. October 1974 to current year.
WDR NY-78-1: 1976, 1977 (m). WDR NY-83-3:
Water-stage recorder. Datum of gage is 900.00 ft above
NGVD of 1929 and 899.46 ft above NAVD of 1988.
High flows significantly regulated by upstream
reservoirs: since March 1940, by Arkport Reservoir (01521000); since
June 1949, by Almond Lake (01523000); since Nov. 1979, by Tioga Lake
(01517900) and Hammond Lake (01518498); and since Dec. 1979, by
Cowanesque Lake (01519995). From 1931-98, a large part of flow from
45.5 mi² of drainage area upstream from Lamoka Lake on Mud Creek, an
upstream tributary, had been diverted into Keuka Lake (Oswego River
basin) for power development.
Water Years 2014-17: Records good except those for estimated daily
discharges, which are fair. Water Years 2018-19: Records good except
those for estimated daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, since
construction of Tioga, Hammond and Cowanesque Lakes in 1979, about
61,000 ft³/s, Jan. 19, 1996, gage height, 25.93 ft, partially
obstructed intake; minimum discharge, 95 ft³/s, Sept. 9, 10, 23, 24,
1991, gage height, 14.30 ft.
EXTREMES OUTSIDE PERIOD OF RECORD.--
Flood of June 23, 1972,
reached a stage of 40.71 ft, from floodmark, discharge, 228,000 ft³/s,
from peak flows determined at upstream and downstream stations adjusted
for drainage area and channel storage.
EXTREMES FOR PERIOD PRIOR TO REGULATION.--
prior to construction of Tioga, Hammond and Cowanesque Lakes in 1979,
127,000 ft³/s, Sept. 26, 1975, gage height, 32.46 ft; minimum
discharge, 210 ft³/s, Aug. 29, 1978.
Peak Flow and Stage Information