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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)    1975-11-07  2017-04-23  
 Daily Data
    Temperature, water, degrees Celsius  1975-11-07  2017-04-23  17279 
    Discharge, cubic feet per second  2009-05-16  2017-04-23  2900 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2014-12-31  2017-04-23  2523 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009-01-22  2017-04-23  4663 
    pH, water, unfiltered, field, standard units  2009-01-22  2017-04-23  8861 
    Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2014-12-31  2017-04-23  2508 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2014-12-31  2017-04-23  2535 
    Discharge, tidally filtered, cubic feet per second  2014-12-31  2017-02-11  774 
 Daily Statistics 
    Temperature, water, degrees Celsius  1978-02-09  2016-10-23 4858 
    Discharge, cubic feet per second  2009-05-16  2015-09-30 2329 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2014-12-31  2016-10-22 658 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2014-12-31  2016-10-22 660 
    Discharge, tidally filtered, cubic feet per second  2014-12-31  2015-09-30 274 
 Monthly Statistics 
    Temperature, water, degrees Celsius  1978-02  2016-10  
    Discharge, cubic feet per second  2009-05  2015-09  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2014-12  2016-10  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2014-12  2016-10  
    Discharge, tidally filtered, cubic feet per second  2014-12  2015-09  
 Annual Statistics 
    Temperature, water, degrees Celsius  1978  2017  
    Discharge, cubic feet per second  2009  2015  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2015  2017  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2015  2017  
    Discharge, tidally filtered, cubic feet per second  2015  2015  
 Peak streamflow 1894-06-07  2014-12-22  45 
 Field measurements 1987-11-20  2017-02-11  154 
 Field/Lab water-quality samples 1974-10-25  2017-04-05  698 
 Water-Year Summary 2006  2016  11 

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