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USGS 14206241 TUALATIN RIVER AT HWY 219 NEAR HILLSBORO, OR

  Stream Site

DESCRIPTION:
Latitude 45°30'01.4",   Longitude 122°59'27.4"   NAD83
Washington County, Oregon, Hydrologic Unit 170900100404
Drainage area: 462.0 square miles
Datum of gage: 120.0 feet above   NAVD88.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2019-04-18  2025-12-17  
 Daily Data
    Temperature, water, degrees Celsius  2019-04-18  2025-12-17  7279 
    Discharge, cubic feet per second  2021-07-10  2025-12-16  1611 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2019-04-19  2025-12-17  7260 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2019-04-19  2025-12-17  7274 
    pH, water, unfiltered, field, standard units  2019-04-18  2025-12-17  7082 
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2019-04-19  2020-10-20  1185 
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2019-04-19  2020-10-20  1183 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2019-04-19  2025-12-17  7189 
 Daily Statistics 
    Temperature, water, degrees Celsius  2019-04-19  2025-05-28 2221 
    Discharge, cubic feet per second  2021-07-10  2022-12-12 521 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2019-04-19  2025-03-26 2153 
    Dissolved oxygen, water, unfiltered, milligrams per liter  2019-04-19  2025-05-28 2218 
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2019-04-19  2020-10-20 394 
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2019-04-19  2020-10-20 394 
 Monthly Statistics 
    Temperature, water, degrees Celsius  2019-04  2025-05  
    Discharge, cubic feet per second  2021-07  2022-12  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2019-04  2025-03  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2019-04  2025-05  
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2019-04  2020-10  
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2019-04  2020-10  
 Annual Statistics 
    Temperature, water, degrees Celsius  2019  2025  
    Discharge, cubic feet per second  2021  2023  
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2019  2025  
    Dissolved oxygen, water, unfiltered, milligrams per liter  2019  2025  
    Chlorophyll fluorescence (fChl), water, in situ, concentration estimated from reference material, micrograms per liter as chlorophyll  2019  2021  
    Phycocyanin fluorescence (fPC), water, in situ, concentration estimated from reference material, micrograms per liter as phycocyanin  2019  2021  
 Peak streamflow 2022-01-11  2024-01-29  3 
 Field measurements 2021-08-04  2025-12-10  51 
 Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP) 1991-05-06  2022-11-29  1089 
 Water-Year Summary 2019  2024  6 
 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