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ALL DATA ARE EASTERN STANDARD TIME

USGS 04221000 GENESEE RIVER AT WELLSVILLE NY

PROVISIONAL DATA SUBJECT TO REVISION

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LOCATION.--Lat 42°07'20", long 77°57'26" referenced to North American Datum of 1983, Allegany County, NY, Hydrologic Unit 04130002, on left bank 35 ft upstream from concrete weir at Wellsville, 0.5 mi upstream from bridge on State Highway 17, 0.6 mi upstream from Crowner Brook and sewage treatment plant, 0.6 mi downstream from Dyke Creek, and 140.9 mi upstream from mouth.
DRAINAGE AREA.--288 mi².
PERIOD OF RECORD.--August 1955 to September 1958, October 1972 to current year. Records for June 1916 to September 1972, published as Genesee River at Scio (station 04221500) at site 5.2 mi downstream, are not equivalent because of difference in drainage areas.
REVISED RECORDS.--WDR NY-82-3: Drainage area.
GAGE.--Water-stage recorder and concrete control. Datum of gage is 1,470.00 ft above NGVD of 1929 and 1469.51 ft above NAVD of 1988 (VERTCON). August 1955 to September 1957, at same site at datum 8.00 ft higher. October 1957 to September 1958, nonrecording gage at site 0.4 mi upstream at datum 3.00 ft higher.
REMARKS.--Water Years 2014-16: Records good except those for estimated daily discharges, which are fair.
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 22,700 ft³/s, Jan. 19, 1996, gage height, 16.13 ft; minimum discharge, 11 ft³/s, Sept. 2, 3, 1991, Aug. 19, Sept. 6, 1999.
EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum discharge since June 1916, 38,500 ft³/s, June 23, 1972, gage height, 20.7 ft, present datum, from floodmark, on basis of contracted-opening measurement of peak flow 0.5 mi downstream.
PERIOD OF RECORD1.--SUSPENDED-SEDIMENT DISCHARGE: April 1975 to September 1977.
EXTREMES FOR PERIOD OF DAILY RECORD1.--SUSPENDED-SEDIMENT CONCENTRATION: Maximum daily mean, 1,280 mg/L, June 5, 1975; minimum daily mean, 0 mg/L, Apr. 2, 1975. SUSPENDED-SEDIMENT DISCHARGE: Maximum daily, 15,200 tons, Feb. 17, 1976; minimum daily, 0 ton, Apr. 2, 1975.
1 Water-Quality Records

Peak Flow and Stage Information

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This station managed by the NY Water Science Center Ithaca.

Available Parameters Available Period
All 2 Available Parameters for this site
  
00060 Discharge 2007-10-01  2017-10-21
00065 Gage height 2007-10-01  2017-10-21

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Summary of all available data for this site
Instantaneous-data availability statement


Discharge, cubic feet per second

Most recent instantaneous value: 31.7 10-21-2017   10:45 EST
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Daily discharge, cubic feet per second -- statistics for Oct 21 based on 45 years of record more
Most Recent
Instantaneous
Value Oct 21
Min
(1981)
25th
percen-
tile
Median 75th
percen-
tile
Mean Max
(1996)
31.7 33.0 50 97 283 433 3620


Gage height, feet

Most recent instantaneous value: 4.30 10-21-2017   10:45 EST
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