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  • USGS 02301721 ALAFIA RIVER AT GIBSONTON FL

    PROVISIONAL DATA SUBJECT TO REVISION

    Click to hidestation-specific text

    This gage is monitored in cooperation with the

    Southwest Florida Water Management District.

    Southwest Florida Water Management District

    Data are tidally affected -- Astronomical tides cause significant cycles of approximately 24.84 hours at this site. Because a different portion of the 24.84-hour tidal cycle is averaged in successive daily (24-hour) computations, a systematic secondary oscillation, unrelated to basin hydrology and having a period of about two weeks may be apparent in daily data.
    
    
    LOCATION.--Lat 27°51'34", long 82°23'04" referenced to North American Datum of 1927,
    Hillsborough County, FL, Hydrologic Unit 03100204, on U.S. Highway 41 bridge,
    0.6 mi north of Gibsonton, and 1.1 mi upstream from mouth.
    
    DRAINAGE AREA.--418 mi2. 
    
    PERIOD OF RECORD.--January 1987 to September 1989 (tidal stage data);
    October 1998 to September 2003 (maximum and minumum only); October 2003 to September 2010
    (tidal high-high and low-low only); October 2010 to current year
    (maximum and minimum only).
    
    GAGE.--Water-stage recorder. Datum of gage is at National Geodetic Vertical 
    Datum of 1929 and 0.89 ft below North American Vertical Datum of 1988.
    Prior to October 1, 2004, datum of gage is 10.0 ft below NGVD 1929. 
    
    
    
    Available Parameters Available Period
    All 8 Available Parameters for this site
      
    00065 Gage height 2007-10-01  2014-09-01
    00010 Temperature, water, BTTM 2007-10-01  2014-09-01
    00095 Specific cond at 25C, BTTM 2007-10-01  2014-09-01
    00010 Temperature, water, TOP 2007-10-01  2014-09-01
    00095 Specific cond at 25C, TOP 2007-10-01  2014-09-01
    00095 Specific cond at 25C, MIDDLE 2007-10-01  2014-09-01
    00010 Temperature, water, MIDDLE 2007-10-01  2014-09-01
    63160 Stream level, NAVD 2010-10-13  2014-09-01

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    Days  (7)
     

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


    Gage height, feet

    Most recent instantaneous value: 0.94   09-01-2014  17:00 EDT
    Graph of  Gage height, feet

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    Temperature, water, degrees Celsius, BTTM

    Most recent instantaneous value: 30.5   09-01-2014  17:00 EDT
    Graph of  Temperature, water, degrees Celsius, BTTM

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    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, BTTM

    Most recent instantaneous value: 35,200   09-01-2014  17:00 EDT
    Graph of  Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, BTTM

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    Temperature, water, degrees Celsius, TOP

    Most recent instantaneous value: 30.6   09-01-2014  17:00 EDT
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    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, TOP

    Most recent instantaneous value: 43,900   09-01-2014  17:00 EDT
    Graph of  Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, TOP

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    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, MIDDLE

    Most recent instantaneous value: 39,100   09-01-2014  17:00 EDT
    Graph of  Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius, MIDDLE

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    Temperature, water, degrees Celsius, MIDDLE

    Most recent instantaneous value: 30.5   09-01-2014  17:00 EDT
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    Stream water level elevation above NAVD 1988, in feet

    Most recent instantaneous value: 0.05   09-01-2014  17:00 EDT
    Graph of  Stream water level elevation above NAVD 1988, in feet

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