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  • USGS 14211720 WILLAMETTE RIVER AT PORTLAND, OR

      Stream Site

    DESCRIPTION:
    Latitude 45°31'03",   Longitude 122°40'09"   NAD83
    Multnomah County, Oregon, Hydrologic Unit 17090012
    Drainage area: 11,200 square miles
    Datum of gage: 1.55 feet above   NGVD29.
    AVAILABLE DATA:
    Data Type Begin Date End Date Count
     Current / Historical Observations     (availability statement)    2009-01-22  2014-08-22  
     Daily Data
        Temperature, water, degrees Celsius  1975-11-07  2014-08-21  14360 
        Discharge, cubic feet per second  1972-10-01  2014-08-21  15291 
        Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1975-12-02  2014-08-21  14853 
        Dissolved oxygen, water, unfiltered, milligrams per liter  2009-01-22  2014-08-21  6007 
        pH, water, unfiltered, field, standard units  2009-01-22  2014-08-21  5937 
        UV fluorescence, water, in situ, single band, 370 nm excitation, 470 nm emission, relative fluorescence units (RFU)  2013-02-04  2014-08-21  1671 
        Colored dissolved organic matter (CDOM), water, in situ, single band excitation, fluorescence emission, parts per billion quinine sulfate equivalents (ppb QSE)  2012-12-19  2014-08-21  1758 
        Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009-01-22  2014-08-21  5988 
        Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2009-01-22  2014-08-21  5940 
        Depth of sensor below water surface, feet  2009-01-22  2014-08-21  4950 
        Phycocyanins (cyanobacteria), water, in situ, in vivo fluorescence, in vivo fluorescence units  2013-02-04  2014-08-21  1581 
        Nitrate, water, in situ, milligrams per liter as nitrogen  2013-02-17  2014-08-21  1590 
     Daily Statistics 
        Temperature, water, degrees Celsius  1978-02-09  2014-06-22 4007 
        Discharge, cubic feet per second  1972-10-01  2013-10-20 14995 
        Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1975-12-02  2014-06-22 4886 
        Dissolved oxygen, water, unfiltered, milligrams per liter  2009-01-22  2014-06-22 1940 
        pH, water, unfiltered, field, standard units  2009-01-22  2014-06-22 1906 
        Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009-01-22  2011-09-30 972 
        Depth of sensor below water surface, feet  2009-01-22  2014-06-22 1590 
     Monthly Statistics 
        Temperature, water, degrees Celsius  1978-02  2014-06  
        Discharge, cubic feet per second  1972-10  2013-10  
        Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1975-12  2014-06  
        Dissolved oxygen, water, unfiltered, milligrams per liter  2009-01  2014-06  
        pH, water, unfiltered, field, standard units  2009-01  2014-06  
        Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009-01  2011-09  
        Depth of sensor below water surface, feet  2009-01  2014-06  
     Annual Statistics 
        Temperature, water, degrees Celsius  1978  2014  
        Discharge, cubic feet per second  1973  2014  
        Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1976  2014  
        Dissolved oxygen, water, unfiltered, milligrams per liter  2009  2014  
        pH, water, unfiltered, field, standard units  2009  2014  
        Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009  2011  
        Depth of sensor below water surface, feet  2009  2014  
     Peak streamflow 1894-06-07  2012-12-05  35 
     Field measurements 1987-11-20  2014-06-11  120 
     Field/Lab water-quality samples 1974-10-25  2014-08-20  649 

    Additional Data Sources

    Begin Date

    End Date

    Count
     Instantaneous-Data Archive  **offsite** 1988-10-01  2007-05-06  174087 
     Annual Water-Data Report (pdf)  **offsite** 2006  2013  8 
    OPERATION:
    Record for this site is maintained by the USGS Oregon Water Science Center
    Email questions about this site to Oregon Water Science Center Water-Data Inquiries