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    USGS 01616500 OPEQUON CREEK NEAR MARTINSBURG, WV

    PROVISIONAL DATA SUBJECT TO REVISION

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    LOCATION.--Lat 39°25'25", long 77°56'20", 
          referenced to North American Datum of 1927, Berkeley County, WV, Hydrologic Unit 02070004, 
          on right bank 300 ft upstream from Evans Run, 2.3 mi upstream from Tuscarora Creek, 
          3.0 mi southeast of Martinsburg, and at mile 11.6.
    DRAINAGE AREA.--273 mi2.
    PERIOD OF RECORD.--May 1905 to June 1906 (monthly mean discharge published in WSP 1302, 
          and annual maximum published in WSP 1672), July 1947 to current year (daily discharge and peaks).
    REVISED RECORDS.--WSP 1702: 1959. WDR WV-97-1: Drainage area, 1936(M), 1967(M), 1968(P), 1969(M).
    GAGE.--Water-stage recorder with satellite telemeter. Datum of gage is 354.33 ft above NAVD 88 
          (VERTCON conversion of 354.89 ft above NGVD 29). Prior to July 1906, nonrecording gage at 
          approximately the same site at different datum. July 23, 1947 to July 22, 1948, 
          nonrecording gage at present site and datum.
    REMARKS.--Water discharge records good except those for periods of estimated daily discharges 
          (ice effect), which are poor. Some diurnal fluctuation at low flow caused by upstream mills in 
          Virginia and since July 18, 1988, by wastewater treatment plant, 1,000 ft upstream from 
          Opequon Creek near Berryville, Va (01615000); drainage area 57.4 mi2.
    EXTREMES OUTSIDE PERIOD OF RECORD.--Flood in March 1936 reached a stage of about 17.5 ft, 
          from information by local residents, estimated discharge, 19,100 ft3/s.
    PERIOD OF RECORD (WQ).--June 2005 to current year.
    This gaging station is maintained in cooperation with:
            State of West Virginia
    

    Current shift adjusted stage-discharge rating table. These tab delimited tables are updated daily and can change frequently. If you use these ratings, it is important that you update often so that you have the most current version.
    What is a shift adjusted stage-discharge rating?

    This station managed by the Leetown Field Office.

    Available Parameters Available Period
    All 2 Available Parameters for this site
      
    00060 Discharge 2007-10-01  2014-08-30
    00065 Gage height 2014-05-02  2014-08-30

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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: 86   08-30-2014  02:00 EDT
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    Daily discharge, cubic feet per second -- statistics for Aug 30 based on 67 years of record more
    Min
    (1966)
    25th
    percen-
    tile
    Median Most Recent
    Instantaneous
    Value Aug 30
    Mean 75th
    percen-
    tile
    Max
    (1996)
    30 63 80 86 95 107 281


    Gage height, feet

    Most recent instantaneous value: 2.00   08-30-2014  02:00 EDT
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