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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)    2007-10-01  2016-12-03  
 Daily Data
    Temperature, water, degrees Celsius  1975-11-07  2016-12-02  16862 
    Discharge, cubic feet per second  1972-10-01  2016-12-02  16100 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1977-10-01  2016-12-02  15753 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009-01-22  2016-12-02  8503 
    pH, water, unfiltered, field, standard units  2009-01-22  2016-12-02  8441 
    Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009-01-22  2011-09-30  2916 
    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  2016-12-02  8442 
 Daily Statistics 
    Temperature, water, degrees Celsius  1978-02-09  2016-05-09 4694 
    Discharge, cubic feet per second  1972-10-01  2016-02-02 15830 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1977-10-01  2016-05-09 5039 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009-01-22  2016-05-09 2625 
    Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009-01-22  2011-09-30 972 
 Monthly Statistics 
    Temperature, water, degrees Celsius  1978-02  2016-05  
    Discharge, cubic feet per second  1972-10  2016-02  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1977-10  2016-05  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009-01  2016-05  
    Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009-01  2011-09  
 Annual Statistics 
    Temperature, water, degrees Celsius  1978  2016  
    Discharge, cubic feet per second  1973  2016  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1978  2016  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009  2016  
    Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009  2011  
 Peak streamflow 1894-06-07  2014-12-22  45 
 Field measurements 1987-11-20  2016-04-07  138 
 Field/Lab water-quality samples 1974-10-25  2016-11-15  692 
 Water-Year Summary 2006  2015  10 

Additional Data Sources

Begin Date

End Date

Count
 Instantaneous-Data Archive  **offsite** 1988-10-01  2007-05-06  174087 
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