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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 01481500 BRANDYWINE CREEK AT WILMINGTON, DE

    PROVISIONAL DATA SUBJECT TO REVISION

    Click to hidestation-specific text

    LOCATION.--Lat 39°46'10.2", long 75°34'36.1", New Castle County, Hydrologic Unit 02040205,
       on left bank at upstream side of Rising Sun Bridge, in Wilmington, and 4.2 mi upstream from mouth.
    DRAINAGE AREA.--314 mi2.
    PERIOD OF RECORD.--October 1946 to current year.  Prior to December 1946 monthly discharge only,
       published in WSP 1302.
    REVISED RECORDS.--WSP 1432:  1948, 1950; WDR-US-2011: 2007-2010.
    GAGE.--Water-stage recorder and concrete control.  Datum of gage is 67.17 ft above North American 
       Vertical Datum of 1988.
    REMARKS.--Some diurnal fluctuation at low flow caused by mills upstream from station. Flow regulated since
       November 1973 by Marsh Creek Reservoir (see station 01480684 Marsh Creek Lake nr. Downington, PA), capacity 
       7,230,000,000 gal, about 27 mi upstream. No diversion just upstream from station by plant of E. I. du Pont de Nemours & Co.
       since June l3, 1960. Gage relocated to left bank at upstream side of Rising Sun Bridge, October 2006 at same gage datum. 
       U.S. Geological Survey satellite data-collection platform at station. Water-quality records for some prior periods have been
       collected at this location.
    EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 29,000 ft3/s, June 23, 1972, maximum gage height 15.49 ft, June 23, 1972
       (at old gage location downstream of mill dam, prior to regulation). Maximum gage height, 18.71 ft, August 28, 2011 (at current gage location);
       minimum discharge, 30 ft3/s,  Dec. 26, 1948.
    COOPERATION.--Funding for the operation of this station is provided by the Delaware Geological Survey, the 
       City of Wilmington, and the  U.S. Geological Survey.
    CRITICAL LEVELS.--Bankfull stage; 15.2 ft (5,375 ft3/s), flood stage; 16.5 ft (8,940 ft3/s), 
       information provided by the National Weather Service. 
    
    Boating safety tips
    This station managed by the MD-DE-DC Water Science Center, Dover office.

    Available Parameters Available Period
    All 8 Available Parameters for this site
      
    00010 Temperature, water 2007-10-01  2014-09-01
    00060 Discharge 2007-10-01  2014-09-01
    00065 Gage height 2014-05-04  2014-09-01
    00095 Specific cond at 25C 2007-10-01  2014-09-01
    00400 pH 2007-10-01  2014-09-01
    63680 Turbidity, Form Neph 2007-10-01  2014-09-01
    00300 Dissolved oxygen 2007-10-01  2014-09-01
    00301 Diss oxygen,%saturtn 2014-05-04  2014-09-01

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


    Temperature, water, degrees Celsius

    Most recent instantaneous value: 24.6   09-01-2014  18:15 EST
    Graph of  Temperature, water, degrees Celsius

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    Discharge, cubic feet per second

    Most recent instantaneous value: 427   09-01-2014  18:15 EST
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    Daily discharge, cubic feet per second -- statistics for Sep 1 based on 40 years of record more
    Min
    (1995)
    25th
    percen-
    tile
    Median Mean 75th
    percen-
    tile
    Most Recent
    Instantaneous
    Value Sep 1
    Max
    (1977)
    57 120 166 242 317 427 947


    Gage height, feet

    Most recent instantaneous value: 12.14   09-01-2014  18:15 EST
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    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius

    Most recent instantaneous value: 346   09-01-2014  18:15 EST
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    pH, water, unfiltered, field, standard units

    Most recent instantaneous value: 7.9   09-01-2014  18:15 EST
    Graph of  pH, water, unfiltered, field, standard units

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    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)

    Most recent instantaneous value: 7.5   09-01-2014  18:15 EST
    Graph of  Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)

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    Dissolved oxygen, water, unfiltered, milligrams per liter

    Most recent instantaneous value: 8.4   09-01-2014  18:15 EST
    Graph of  Dissolved oxygen, water, unfiltered, milligrams per liter

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    Dissolved oxygen, water, unfiltered, percent of saturation

    Most recent instantaneous value: 101   09-01-2014  18:15 EST
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