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USGS Water-Year Summary 2024
01526500 TIOGA RIVER NEAR ERWINS, NY
LOCATION - Lat 42°07'16", long 77°07'45" referenced to North American Datum of 1983, Steuben County, NY, Hydrologic Unit 02050104, on right bank 20 ft downstream from bridge on Mulholland Road, 1.1 mi northeast of Erwins, and 1.1 mi downstream from Canisteo River.
DRAINAGE AREA - 1,377 mi².
REVISIONS HISTORY - WSP 891: 1935-38. WSP 1672: 1919 (M), 1927 (M), 1929 (M). WSP 2103: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1918 to current year.
GAGE - Water-stage recorder. Datum of gage is 931.24 ft above NGVD of 1929 and 930.82 ft above NAVD of 1988. Prior to June 21, 1931, nonrecording gage on highway bridge at same datum.
REMARKS - Since November 1979, flood flows regulated by Tioga Lake (station 01517900) and Hammond Lake (station 01518498), and since December 1979, by Cowanesque Lake (station 01519995); normal regulation occasionally sufficient to affect figures of monthly runoff.
Water Years 2014-23: Records good except those for estimated daily discharges, which are fair.
Water Years 2014-23: Records good except those for estimated daily discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, since construction of Tioga, Hammond, and Cowanesque Lakes in 1979, 45,600 ft³/s, Jan. 19, 1996, gage height 16.98 ft; minimum discharge, 52 ft³/s, Oct. 1, 2, 6, 1980.
EXTREMES FOR PERIOD PRIOR TO REGULATION - Maximum discharge, prior to construction of Tioga, Hammond, and Cowanesque Lakes in 1979, 190,000 ft³/s, June 23, 1972, gage height, 26.74 ft, from floodmarks, from rating curve extended above 90,000 ft³/s on basis of computation of peak flow at Tioga River at Lindley (station 01520500) and Canisteo River at Erwins (station 01526070), 7.2 mi and 2.0 mi upstream, respectively, adjusted for flow from intervening area; minimum discharge, 18 ft³/s, Sept. 2, 3, 1939; minimum gage height, 0.40 ft, Sept. 8, 9, 1954, July 23, Aug. 10, 11, 1955.
