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USGS 14203500 TUALATIN RIVER NEAR DILLEY, OR

  Stream Site

DESCRIPTION:
Latitude 45°28'30",   Longitude 123°07'23"   NAD27
Washington County, Oregon, Hydrologic Unit 17090010
Drainage area: 125 square miles
Datum of gage: 147.57 feet above   NGVD29.
AVAILABLE DATA:
Data Type Begin Date End Date Count
 Current / Historical Observations     (availability statement)    2016-03-26  2017-04-28  
 Daily Data
    Temperature, water, degrees Celsius  1967-10-01  2017-04-26  1899 
    Discharge, cubic feet per second  2017-02-09  2017-04-26  77 
    Specific conductance, water, unfiltered, microsiemens per centimeter at 25 degrees Celsius  2017-02-21  2017-04-26  186 
    pH, water, unfiltered, field, standard units  2017-02-21  2017-04-26  186 
    Chlorophylls, water, in situ, fluorometric method, excitation at 470 +-15 nm, emission at 685 +-20 nm, micrograms per liter  2017-03-07  2017-04-26  153 
    Phycocyanins (cyanobacteria), water, in situ, fluorometric method, excitation at 590 +-15 nm, emission at 685 +-20 nm, micrograms per liter  2017-03-07  2017-04-26  153 
    Turbidity, water, unfiltered, monochrome near infra-red LED light, 780-900 nm, detection angle 90 +-2.5 degrees, formazin nephelometric units (FNU)  2016-03-26  2017-04-26  780 
 Daily Statistics 
    Temperature, water, degrees Celsius  2016-03-27  2017-01-09 284 
 Monthly Statistics 
    Temperature, water, degrees Celsius  2016-03  2017-01  
 Annual Statistics 
    Temperature, water, degrees Celsius  2016  2017  
 Peak streamflow 1940-02-06  2015-12-09  77 
 Field measurements 1977-12-14  2017-04-05  220 
 Field/Lab water-quality samples 1981-10-28  2013-03-06  961 
 Water-Year Summary 2006  2016  9 

Additional Data Sources

Begin Date

End Date

Count
 Instantaneous-Data Archive  **offsite** 1986-10-01  2007-09-30  602212 
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