USGS Water-Year Summary for Site 14206241

Click to hide Water-Year Summary instructions and information

Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
Not all sites have reports available for every water year.

	Available Parameters
	00010 Temperature, water(Min.,Mean,Max.)
	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)
	32319 fPC, water, in situ(Min.,Max.,Mean)
	63680 Turbidity, Form Neph(Max.,Min.,Med.)

Select a water year

Water year 2020: 2019-10-01 to 2020-09-30

Print this page

USGS Water-Year Summary 2020

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, 143 microsiemens Oct. 1, 2019; minimum, 80 microsiemens Sept. 2, 2019.

pH: Maximum, 7.5 units Sept. 30, 2019; minimum, 7.1 units Apr. 18-23, 2019.

WATER TEMPERATURE: Maximum, 19.4°C June 11, 2019; minimum, 10.8°C Apr. 22, 2019.

DISSOLVED OXYGEN: Maximum, 10.4 mg/L April 22, 2019; minimum, 8.0 mg/L June 1, 2, Sept. 15, 16, 18, 2019.

TURBIDITY: Maximum, 22.9 FNU Apr. 28, 2019; minimum, 2.4 FNU on June 25, 2019.