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  • USGS 03086000 Ohio River at Sewickley, PA

      Stream Site

    Latitude 40°32'57",   Longitude 80°12'21"   NAD27
    Allegheny County, Pennsylvania, Hydrologic Unit 05030101
    Drainage area: 19,500 square miles
    Datum of gage: 680 feet above   NGVD29.
    Data Type Begin Date End Date Count
     Current / Historical Observations     (availability statement)    2007-10-01  2014-09-02  
     Daily Data
        Discharge, cubic feet per second  1933-10-01  2014-09-01  29556 
     Daily Statistics 
        Discharge, cubic feet per second  1933-10-01  2013-09-30 29220 
     Monthly Statistics 
        Discharge, cubic feet per second  1933-10  2013-09  
     Annual Statistics 
        Discharge, cubic feet per second  1934  2013  
     Peak streamflow 1934-03-06  2013-02-01  80 
     Field measurements 1933-03-16  2014-05-19  575 
     Field/Lab water-quality samples 1961-10-17  2014-02-26  426 

    Additional Data Sources

    Begin Date

    End Date

     Instantaneous-Data Archive  **offsite** 1990-10-01  2007-09-30  358411 
     Annual Water-Data Report (pdf)  **offsite** 2006  2013  8 
    Record for this site is maintained by the USGS Pennsylvania Water Science Center
    Email questions about this site to Pennsylvania Water Science Center Water-Data Inquiries

    LOCATION.--Lat 40`32'57", long 80`12'21", Allegheny County, Hydrologic Unit 5030101, near left bank 50 ft upstream from Dashields Dam, 1.0 mi downstream from Narrows Run, 1.0 mi northwest of Sewickley, and 13.3 mi downstream from confluence of Allegheny and Monongahela Rivers.
    DRAINAGE AREA.--19,500 mi2, approximately.
    PERIOD OF RECORD.--October 1933 to current year.
    GAGE.--Water-stage recorder and fixed-crest concrete dam control. Datum of gage is 680.00 ft above sea level (U.S. Army Corps of Engineers benchmark). Prior to Nov. 22, 1933, nonrecording gage, Nov. 22, 1933 to May 4, 1981, water-stage recorder at site 1.5 mi upstream, Nov. 14, 1988 to July 12, 1990, nonrecording gage, and July 13, 1990 to June 13, 1991, water-stage recorder at present site at datum 10.41 ft higher.
    REMARKS.--Some regulation by locks, and by many reservoirs above station. Combined capacity of reservoirs and lakes, excluding that of Chautauqua Lake, but including Lake Lynn, Deep Creek Reservoir, and 15 smaller reservoirs, 2,773,000 acre-ft. U.S. Army Corps of Engineers satellite telemeter at station.
    FLOOD STAGE.--NOAA, National Weather Service river forecast station flood stage provided to USGS April 1999 is 25 feet.
    COOPERATION.--Funding for the operation of this station is provided by the U.S. Army Corps of Engineers and the U.S. Geological Survey.