PROVISIONAL DATA SUBJECT TO REVISION
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LOCATION.--Lat 42°20'05.5", long
77°40'57.6" referenced to North American Datum of
1983, Steuben County, NY, Hydrologic Unit 02050104, on right
bank 35 ft downstream from bridge on State Highway 21, 1.2 mi
west of Hornell, 1.5 mi downstream from Almond Dam, and 2.0 mi
upstream from mouth.
DRAINAGE AREA.--57.9 mi².
PERIOD OF RECORD.--October 1940 to September 1942, October 1944 to current year.
REVISIONS HISTORY.--WSP 2103: Drainage area. WDR NY-71-1: 1969 (M).
GAGE.--Water-stage recorder, concrete control, and crest-stage gage. Datum of gage is 1,185.68 ft above NGVD of 1929 and 1,185.09 ft above NAVD of 1988. Oct. 23, 1940 to Dec. 31, 1942, at site 185 ft upstream at different datum. Apr. 19, 2009 to May 7, 2010, due to bridge reconstruction, temporary gage 1.0 mi upstream at different datum.
REMARKS.--Since June 1949, floodflows regulated by detention in Almond Lake (station 01523000). Occasional regulation at low flows to clear debris from gates at Almond Lake. Monthly figures for 1952-66 water years adjusted for regulation.
Water Years 2014-24: Records good except those for estimated daily discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, since construction of Almond Lake in 1949, 5,880 ft³/s, June 23, 1972, gage height 6.14 ft; minimum discharge, 0.08 ft³/s, Nov. 14, 2023, result of regulation.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of July 8, 1935, reached a stage of 16.61 ft, from floodmarks, different datum, discharge, 21,000 ft³/s, on basis of slope-area measurement of peak flow.
EXTREMES FOR PERIOD PRIOR TO REGULATION.--Maximum discharge, prior to construction of Almond Lake in 1949, 9,430 ft³/s, May 17, 1945, gage height, 5.14 ft, from rating curve extended above 3,400 ft³/s; maximum gage height, 6.65 ft, June 3, 1947; minimum discharge, 3.4 ft³/s, Oct. 2, 1941.
DRAINAGE AREA.--57.9 mi².
PERIOD OF RECORD.--October 1940 to September 1942, October 1944 to current year.
REVISIONS HISTORY.--WSP 2103: Drainage area. WDR NY-71-1: 1969 (M).
GAGE.--Water-stage recorder, concrete control, and crest-stage gage. Datum of gage is 1,185.68 ft above NGVD of 1929 and 1,185.09 ft above NAVD of 1988. Oct. 23, 1940 to Dec. 31, 1942, at site 185 ft upstream at different datum. Apr. 19, 2009 to May 7, 2010, due to bridge reconstruction, temporary gage 1.0 mi upstream at different datum.
REMARKS.--Since June 1949, floodflows regulated by detention in Almond Lake (station 01523000). Occasional regulation at low flows to clear debris from gates at Almond Lake. Monthly figures for 1952-66 water years adjusted for regulation.
Water Years 2014-24: Records good except those for estimated daily discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, since construction of Almond Lake in 1949, 5,880 ft³/s, June 23, 1972, gage height 6.14 ft; minimum discharge, 0.08 ft³/s, Nov. 14, 2023, result of regulation.
EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of July 8, 1935, reached a stage of 16.61 ft, from floodmarks, different datum, discharge, 21,000 ft³/s, on basis of slope-area measurement of peak flow.
EXTREMES FOR PERIOD PRIOR TO REGULATION.--Maximum discharge, prior to construction of Almond Lake in 1949, 9,430 ft³/s, May 17, 1945, gage height, 5.14 ft, from rating curve extended above 3,400 ft³/s; maximum gage height, 6.65 ft, June 3, 1947; minimum discharge, 3.4 ft³/s, Oct. 2, 1941.
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