Warning: Javascript must be enabled to use all the features on this page!


Page Loading - Please Wait...

Click to hideNews Bulletins

Water-Year Summary for Site 14206950

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(Max.,Min.,Mean)  
00060 Discharge(Mean)  
00095 Specific cond at 25C(Max.,Min.,Mean)  
00300 Dissolved oxygen(Max.,Min.,Mean)  
00400 pH(Max.,Min.,Med.)  
63680 Turbidity, Form Neph(Min.,Med.,Max.)  

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

Print this page
USGS Water-Year Summary 2020
14206950 FANNO CREEK AT DURHAM, OR
LOCATION - Lat 45°24'13", long 122°45'13" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.13, T.2 S., R.1 W., Washington County, OR, Hydrologic Unit 17090010, on right bank, under Durham Road bridge, at Durham and at mile 1.13.
DRAINAGE AREA - 31.5 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - September to November 1966, September 1972 to September 1977 (discharge measurements only), October 1993 to February 1996, October 2000 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 115.78 ft above NAVD of 1988 (levels by State of Oregon Water Resources Department).
COOPERATION - Gage-height record collected and low-flow discharge measurements provided by Clean Water Services of Washington County.
REMARKS - No known regulation or diversion upstream from station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1,680 ft³/s Dec. 7, 2015, gage height, 11.78 ft; maximum gage height, 11.89 ft Dec. 3, 2007; minimum discharge, 0.64 ft³/s Sept. 16, 2016.
WATER-QUALITY RECORDS
PERIOD OF RECORD -

SPECIFIC CONDUCTANCE: October 1993 to February 1996, September 2002 to current year.

pH: January 2003 to current year.

WATER TEMPERATURE: October 1993 to February 1996, September 2002 to current year.

DISSOLVED OXYGEN: January 2003 to current year.

TURBIDITY: January 2003 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. Prior to Apr. 1, 2015, data collected using a YSI 6026 turbidity sensor. Manufacturer's 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, 564 microsiemens Aug. 14, 2019; minimum, 34 microsiemens Oct. 20, 2008.

pH: Maximum, 8.2 units June 2, 2017; minimum, 6.4 units Aug. 22, 2004, Oct. 1, 2005, Oct. 22, 23, 2014.

WATER TEMPERATURE: Maximum, 26.1°C July 5, 2015; minimum, 0.0°C Jan. 31, Feb. 1-3, 1996, Jan. 6, 7, 2004, Dec. 22, 2008, Dec. 8, 2009, Dec. 7, 8, 2013, Feb. 6, 7, 2014.

DISSOLVED OXYGEN: Maximum, 14.4 mg/l Dec. 18, 2005; minimum, 0.0 mg/l Aug. 12, 2018.

TURBIDITY: Maximum recorded, 957 FNU Nov. 10, 2008; minimum, <1 FNU on many days.