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    All Maryland-Delaware-District of Columbia times are reported in Eastern Standard Time (EST). To convert to Eastern Daylight Time (EDT) add 1 hour.


    USGS 01578310 SUSQUEHANNA RIVER AT CONOWINGO, MD

    PROVISIONAL DATA SUBJECT TO REVISION

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    For information about dam operations, call 1-888-457-4076 or contact Exelon Energy (http://www.exeloncorp.com/)

    LOCATION.-- Lat 39°39'28.1", long 76°10'28.2", Harford County, Hydrologic Unit 02050306, 
       1.0 mi southwest of Conowingo, and 9.9 mi upstream from mouth.
    DRAINAGE AREA.--27,100 mi2
    PERIOD OF RECORD.--October 1967 to current year.
    GAGE.--Water-stage recorder.  Datum of gage is 4.16 ft above North American Vertical Datum of 1988.
    REMARKS.--Flow regulated by Conowingo Reservoir beginning October 1928, usable capacity, 55,070,000,000 gal;
       dead storage, 45,290,000,000 gal. Records do not include a small infrequent diversion upstream from station to
       augment municipal supply of city of Baltimore. Records of diversion available from Baltimore City Department
       of Public Works. U.S. Geological Survey satellite data-collection platform at station.
    EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,130,000 ft3/s, June 24, 1972,
       gage height, 36.83 ft; minimum discharge, 144 ft3/s, Mar. 2, 1969.
    COOPERATION.--Funding for the operation of this station is provided by the Exelon Energy Corporation,
       and the U.S Geological Survey. Access to gage site provided by Exelon Energy Corporation.
    
    Boating safety tips
    This station managed by the MD-DE-DC Water Science Center, Baltimore office.

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

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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: 60,000   09-02-2014  15:30 EST
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    Daily discharge, cubic feet per second -- statistics for Sep 2 based on 46 years of record more
    Min
    (1973)
    25th
    percen-
    tile
    Median Mean 75th
    percen-
    tile
    Max
    (2006)
    Most Recent
    Instantaneous
    Value Sep 2
    987 5250 9420 13500 15200 55100 60000


    Gage height, feet

    Most recent instantaneous value: 14.89   09-02-2014  15:30 EST
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