USGS Water-Year Summary for Site 14240525

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	Available Parameters
	00060 Discharge(Mean)
	63680 Turbidity, Form Neph(Max.,Med.,Min.)
	80154 Suspnd sedmnt conc(Mean)
	80155 Suspnd sedmnt disch(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

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, 0.2 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.

REVISIONS HISTORY -

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. Discharge for Nov. 4-5, 2022 was revised on Feb. 9, 2024, based on revision to applied rating shift.

SURFACE-WATER RECORDS

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). Prior to May 15, 2023, at site 950 ft upstream at same datum.

REMARKS - Flow infrequently regulated 25 mi upstream by Spirit Lake Tunnel intake gate at times of tunnel inspection and repair, and rarely regulated 1.7 mi upstream by alterations to the U.S. Army Corps of Engineers' Sediment Retention Structure. Normally insignificant, regulation has affected the period of record minimum discharge, and some annual minimum discharges. No diversion upstream from station. U.S. Geological Survey satellite telemeter at station.

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, site then in use; minimum discharge, 25 ft³/s, Oct. 5, 2012, during spillway construction at the Sediment Retention Structure.

CLIMATOLOGICAL RECORDS

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.

WATER-QUALITY RECORDS

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.

REMARKS - Additional details are available from the Washington Water Science Center. Continuous water quality record is no longer rated, as of water year 2021. Prior ratings can be obtained via request to the Washington Water Science Center.

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.