This station is operated in cooperation
National Weather Service
U.S. Geological Survey
Lat 42°00'08", long 76°38'06"
referenced to North American Datum of 1927, Chemung County, NY,
Hydrologic Unit 02050105, on right bank 100 ft upstream from bridge on
State Highway 427, 0.7 mi southwest of Chemung, and 10.0 mi upstream
PERIOD OF RECORD.--
September 1903 to current year (gage heights
only for some winter periods).
WSP 891: 1935-39. WSP 1432: 1904, 1907, 1915.
WSP 2103: Drainage area. WDR NY-74-1: 1973.
Water-stage recorder. Datum of gage is 778.63 ft above
NGVD of 1929 (levels by Corps of Engineers). Prior to Jan. 10, 1930,
nonrecording gage on highway bridge 60 ft upstream at same datum.
Records good except those for estimated daily
discharges, which are fair. High flows significantly regulated by
upstream reservoirs. During each year a large part of flow from 45.5
of drainage area is diverted upstream from Lake Lamoka
on Mud Creek, an upstream tributary, into Keuka Lake (Oswego River
basin) for power development. Telephone and satellite gage-height
telemeters at station.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, since
construction of Tioga Reservoir in 1979, 77,800 ft3
20, 1996, gage height 19.71 ft; minimum discharge, 104
/s, Sept. 3, 1991, gage height, 2.82 ft.
EXTREMES FOR PERIOD PRIOR TO REGULATION.--
prior to construction of Tioga Reservoir in 1979, 189,000
/s, June 23, 1972, gage height, 31.62 ft, from floodmark,
from rating curve extended above 65,000 ft3
/s, on basis of
slope-area and velocity-area studies at gage height 19.57 ft, and
slope-area and contracted opening measurements at gage heights 23.97 ft
and 31.62 ft; minimum discharge, 49 ft3
/s, Aug. 14, 1911,
gage height, 1.47 ft.
Derived from NY Annual Water-Data Report 2011
Peak Flow and Stage Information