USGS Water-Year Summary for Site 14316460

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Max.,Min.,Mean)
	00400 pH(Max.,Min.,Med.)
	63680 Turbidity, Form Neph(Max.,Min.,Med.)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

14316460 NORTH UMPQUA RIVER AT SODA SPRINGS, NEAR TOKETEE FALLS, OR

LOCATION - Lat 43°18'22", long 122°30'42" referenced to North American Datum of 1927, in NE 1/4 SW 1/4 sec.18, T.26 S., R.3 E., Douglas County, OR, Hydrologic Unit 17100301, on right bank, 0.9 mi upstream from Boulder Creek, 4.5 mi west of Toketee Falls and at mile 68.8.

DRAINAGE AREA - 437 mi².

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD -

SPECIFIC CONDUCTANCE: October 1997 to current year.

pH: October 1997 to current year.

WATER TEMPERATURE: October 1997 to current year.

DISSOLVED OXYGEN: October 1997 to current year.

TURBIDITY: October 1999 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. 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. 24, 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 -

SPECIFIC CONDUCTANCE: Maximum, 83 microsiemens May 24, 2001; minimum, 27 microsiemens Dec. 30, 31, 2005, Jan. 16, 2011.

pH: Maximum, 8.9 units Dec. 16, 2011; minimum, 6.4 units Oct. 18, 2015.

WATER TEMPERATURE: Maximum, 16.2°C June 29, 30, 2021; minimum recorded, 0.8°C Dec. 9, 2009, Dec. 9, 2013.

DISSOLVED OXYGEN: Maximum recorded, 15.2 mg/L Nov. 19, 2000, Nov. 21, 2004; minimum recorded, 6.9 mg/L July 11, 2001, but may have been lower during period of missing record.

TURBIDITY: Maximum, 986 FNU Jan. 16, 2011; minimum, <1 FNU on many days each year.