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USGS 14211720 WILLAMETTE RIVER AT PORTLAND, OR

  Stream: Tidal 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)    1988-10-01  2024-06-16  
 Daily Data
    Temperature, water, degrees Celsius  1975-11-07  2024-06-16  25181 
    Discharge, cubic feet per second  1972-10-01  2024-06-15  18883 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1975-12-02  2024-06-15  21711 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009-01-22  2024-06-16  16718 
    pH, water, unfiltered, field, standard units  2009-01-22  2024-06-15  16644 
    Dissolved organic matter fluorescence (fDOM), water, in situ, concentration estimated from reference material, micrograms per liter as quinine sulfate equivalents (QSE)  2021-06-17  2024-06-15  3273 
    Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009-01-22  2024-06-15  6190 
    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  2024-06-15  16671 
    Discharge, tidally filtered, cubic feet per second  2006-09-30  2024-06-13  6112 
 Daily Statistics 
    Temperature, water, degrees Celsius  2001-11-02  2024-02-12 6887 
    Discharge, cubic feet per second  1972-10-01  2023-12-05 18693 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1975-12-02  2023-01-30 8008 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009-01-22  2024-02-12 5443 
    Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009-01-22  2011-09-29 971 
    Discharge, tidally filtered, cubic feet per second  2006-09-30  2022-10-24 5519 
 Monthly Statistics 
    Temperature, water, degrees Celsius  2001-11  2024-02  
    Discharge, cubic feet per second  1972-10  2023-12  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1975-12  2023-01  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009-01  2024-02  
    Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009-01  2011-09  
    Discharge, tidally filtered, cubic feet per second  2006-09  2022-10  
 Annual Statistics 
    Temperature, water, degrees Celsius  2002  2024  
    Discharge, cubic feet per second  1973  2024  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  1976  2023  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2009  2024  
    Chlorophyll, total, water, fluorometric, 650-700 nanometers, in situ sensor, micrograms per liter  2009  2011  
    Discharge, tidally filtered, cubic feet per second  2006  2023  
 Peak streamflow 1894-06-07  2022-12-29  53 
 Field measurements 1987-11-20  2024-03-27  244 
 Field/Lab water-quality samples 1974-10-25  2024-02-12  941 
 Water-Year Summary 2006  2023  18 
 Revisions  Loading...
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