USGS Water-Year Summary 2020
14240525 NORTH FORK TOUTLE RIVER BELOW SEDIMENT RETENTION STRUCTURE NEAR KID VALLEY, WA
LOCATION - Lat 46°22'19", long 122°34'40" referenced to North American Datum of 1927, Cowlitz County, WA, Hydrologic Unit 17080005, 1.3 mi downstream from Sediment Retention Structure, on left bank, 0.7 mi upstream from the mouth of the Green River, 1.8 mi east of Kid Valley, and at mile 12.0.
DRAINAGE AREA - 146 mi². revised.
- WDR-US-2007: 2001-02 (Average Annual Runoff). Maximum discharge for water year 2016 was revised on May 29, 2020, based on revision to rating extension.
PERIOD OF RECORD - October 1989 to September 1998, October 2000 to September 2002, October 2006 to current year.
GAGE - Water-stage recorder. Datum of gage is 700.00 ft above NGVD of 1929 (levels by U.S. Army Corps of Engineers). To convert to NAVD of 1988, add 3.26 feet (USGS Level 1 GNSS survey as per USGS T&M 11-D1).
EXTREMES OUTSIDE PERIOD OF RECORD - An outstanding flood occurred on May 18, 1980, from a mudflow caused by the eruption of
Mount St. Helens.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 13,100 ft³/s, Feb. 8, 1996, gage height, 62.13 ft; minimum discharge, 25
ft³/s, Oct. 5, 2012, during spillway construction at the Sediment Retention Structure.
PERIOD OF RECORD - PRECIPITATION: October 2011 to September 2016.
INSTRUMENTATION - Tipping bucket precipitation gage (8-inch American Sigma), with a 15-minute logging interval, since October 2011. 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.
EXTREMES FOR PERIOD OF RECORD - PRECIPITATION: Maximum recorded, 0.33 inches, June 16, 2014.
PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: May to September 1990, May to September 1991.
WATER TEMPERATURE: May to September 1990, May to September 1991, May 2001 to September 2002, October 2011 to current year.
SUSPENDED SEDIMENT: February 2001 to September 2002, October 2006 to September 2017.
TURBIDITY: May 2010 to September 2014.
INSTRUMENTATION - Automatic pumping sampler. D-74 suspended sediment sampler located near the bank operated cableway. Thermistor (FTS Digitemp), with a 15-minute logging interval, since November 2012. Turbidity sensor (FTS DTS-12), with a 15-minute logging interval, since May 2010. 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.
EXTREMES FOR PERIOD OF DAILY RECORD - SPECIFIC CONDUCTANCE: Maximum recorded, 999 microsiemens, Sept. 26, 1991; minimum recorded, 322 microsiemens, May 26, 1991.
WATER TEMPERATURE: Maximum recorded 31.1°C, July 5, 2015; minimum recorded, -0.2°C, Dec. 7, 2013.
SEDIMENT CONCENTRATION: Maximum daily, 79,800 mg/L, Nov. 7, 2006; minimum daily, 31 mg/L, Aug. 30, 2010.
SEDIMENT DISCHARGE: Maximum daily, 1,510,000 tons, Nov. 7, 2006; minimum daily, 27 tons, Sept. 13, 2010.
TURBIDITY: Maximum recorded, 2,800 FNU, Sep. 30, 2013; minimum recorded, 6.6 FNU, Oct. 11, 2013.