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Water-Year Summary for Site 14206241

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Min.,Mean,Max.)  
00060 Discharge(Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00300 Dissolved oxygen(Max.,Min.,Mean)  
00400 pH(Max.,Min.,Med.)  
32316 fChl, water, in situ(Max.,Min.,Mean)  
63680 Turbidity, Form Neph(Max.,Min.,Med.)  

Water year 2024: 2024-10-01 to 2025-09-30
 
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USGS Water-Year Summary 2024
14206241 TUALATIN RIVER AT HWY 219 NEAR HILLSBORO, OR
LOCATION - Lat 45°30'01", long 122°59'24" referenced to North American Datum of 1927, Washington County, OR, Hydrologic Unit 17090010, on left bank.
WATER-QUALITY RECORDS
PERIOD OF RECORD - SPECIFIC CONDUCTANCE:  April 2019 to current year.

pH: April 2019 to current year.

WATER TEMPERATURE: April 2019 to current year.

DISSOLVED OXYGEN: April 2019 to current year.

TURBIDITY: April 2019 to current year.
INSTRUMENTATION - Water-quality monitor. Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply  endorsement by the U.S. Government.
REMARKS - TURBIDITY: Data collected using a YSI EXO2 sonde. Manufacturer's stated accuracy is the greater of +/- 2 percent or 0.3 Formazin Nephelometric Units (FNU) for 0-999 FNU, and +/- 5 percent for 1,000-4,000 FNU. Additional parameters and chemical analyses collected at this location not referenced in this document are available via NWISWeb.
EXTREMES FOR PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: Maximum, 397 microsiemens Apr. 18, 2021; minimum, 59 microsiemens Jan. 14, 15, 2021.

pH: Maximum, 7.5 units on many days; minimum, 6.4 units Dec. 21, 2020.

WATER TEMPERATURE: Maximum, 20.9°C June 25, 2021; minimum, 1.3°C Dec. 23, 24, 2022.

DISSOLVED OXYGEN: Maximum, 13.5 mg/L Dec. 24, 2022; minimum, 6.2 mg/L July 19, 2022.

TURBIDITY: Maximum, 158 FNU Apr. 18, 2021; minimum, 1.8 FNU Nov. 1-3, 2019.