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Water-Year Summary for Site 14158100

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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(Max.,Min.,Mean)  
00300 Dissolved oxygen(Max.,Min.,Mean)  
63680 Turbidity, Form Neph(Max.,Med.,Min.)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
14158100 WILLAMETTE RIVER AT OWOSSO BRIDGE, AT EUGENE, OR
LOCATION - Lat 44°05'30", long 123°06'58" referenced to North American Datum of 1983, Lane County, OR, Hydrologic Unit 17090003, and on left bank.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD -

WATER TEMPERATURE: November 2010 to current year.

DISSOLVED OXYGEN: September 2014 to current year.

TURBIDITY: November 2010 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 - Prior to October 2011, published as Willamette River at Eugene. TURBIDITY: Data collected using a YSI EXO2 sonde. Manufacturers stated accuracy is the greater of +/- 2 percent or 0.3 Formazin Nephelometric Units (FNU) except for 1,000-4,000 FNU, which is +/- 5 percent. Prior to Sept. 12, 2014, data collected using a YSI 6136 turbidity sensor. Manufacturers stated accuracy is the greater of +/- 5 percent or 2 FNU. FNU values below 10 are reported to nearest 0.1 FNU. Negative recorded values are reported as 0.0 FNU.
EXTREMES FOR PERIOD OF DAILY RECORD -

WATER TEMPERATURE: Maximum, 23.2°C July 31, 2015, July 28, 2020; minimum, 1.9°C Jan. 7, 2017.

DISSOLVED OXYGEN: Maximum, 14.1 mg/L Feb. 23, 2018, Feb. 25, 2022; minimum, 7.6 mg/L July 29, 2020.

TURBIDITY: Maximum, 199 FNU Dec. 22, 2014; minimum, <1 FNU on many days.