This station is operated in cooperation
NYS Department of Environmental Conservation
U.S. Geological Survey
Lat 42°05'11", long 76°48'04"
referenced to North American Datum of 1983, Chemung County, NY,
Hydrologic Unit 02050105, on right bank 580 ft downstream from bridge
on Pennsylvania Avenue at the north end of George Place at Elmira and
1.0 mi downstream from Hoffman Brook.
PERIOD OF RECORD.--
Annual maximum only--1988-2009, October 2009
to current year.
Water-stage recorder and crest-stage gage. Datum of gage
is 833.65 ft above NGVD of 1929 and 833.05 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. Diversion upstream from City of Corning
and Town of Horseheads for municipal supply, which may include water
from several municipal and industrial wells upstream from gage.
Water Years 2014-17: Records good except those for estimated daily
discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD.--
Maximum discharge, 71,000 ft³/s,
Jan. 20, 1996, gage height, 18.51 ft, from floodmark; minimum
discharge, 109 ft³/s, Sept. 18, 2016; minimum gage height, 0.79 ft,
Sept. 17, 18, Oct. 16, 2016.
EXTREMES OUTSIDE PERIOD OF RECORD.--
Flood of June 23, 1972,
reached a discharge of 235,000 ft³/s, computed by slope-area
measurement at site (station 01530303) 6 mi upstream.
Peak Flow and Stage Information