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    USGS 03086000 Ohio River at Sewickley, PA

    PROVISIONAL DATA SUBJECT TO REVISION

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    STATION.--03086000 OHIO RIVER AT SEWICKLEY, PA
    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 National Geodetic Vertical Datum of 1929 (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.
    GAGE HEIGHTS OF IMPORTANCE.-
    Supplied by NWS: Action stage-19.4 ft; Flood stage-25 ft; Moderate flood stage-29 ft; Major flood stage-32 ft.
    COOPERATION.--Funding for the operation of this station is provided by the U.S. Army Corps of Engineers, Pittsburgh District, and the U.S. Geological Survey.
    This station managed by the PAWSC Pittsburgh Field Office.

    Available Parameters Available Period
    All 3 Available Parameters for this site
      
    00065 Gage height 2007-10-01  2014-09-02
    00060 Discharge 2007-10-01  2014-09-02
    00065 Gage height [(2)] 2014-05-05  2014-09-02

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


    Gage height, feet

    Most recent instantaneous value: 14.38   09-02-2014  21:15 EDT
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    Discharge, cubic feet per second

    Most recent instantaneous value: 15,100   09-02-2014  21:15 EDT
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    Daily discharge, cubic feet per second -- statistics for Sep 2 based on 80 years of record more
    Min
    (1957)
    25th
    percen-
    tile
    Median Mean 75th
    percen-
    tile
    Most Recent
    Instantaneous
    Value Sep 2
    Max
    (2003)
    2400 5540 8500 11200 13200 15100 51700


    Gage height, feet, [(2)]

    Most recent instantaneous value: 16.24   09-02-2014  21:15 EDT
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