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Water-Year Summary for Site 12147500

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  • 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)  
00065 Gage height(Mean)  
63680 Turbidity, Form Neph(Max.,Min.,Med.)  

Water year 2020: 2020-10-01 to 2021-09-30
 

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USGS Water-Year Summary 2020
12147500 NORTH FORK TOLT RIVER NEAR CARNATION, WA
LOCATION - Lat 47°42'45", long 121°47'15" referenced to North American Datum of 1927, in SW 1/4 NE 1/4 sec.28, T.26 N., R.8 E., King County, WA, Hydrologic Unit 17110010, on right bank 2.9 mi upstream from confluence with South Fork, 7.4 mi northeast of Carnation, and at mile 11.7.
DRAINAGE AREA - 39.9 mi².  
REVISIONS HISTORY - WSP 1566: 1957. WSP 1932: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1952 to December 1963, January 1964 to September 1965 (annual peaks furnished by City of Seattle), November 1967 to current year.
GAGE - Water-stage recorder. Elevation of gage is 600 ft above NGVD of 1929, from river-profile map.
REMARKS - No regulation or diversion upstream from station. U.S. Geological Survey satellite telemeter at station.
  • Water Year 2014: No estimated daily discharges. Records good.
  • Water Year 2015: Records good except for estimated daily discharges, which are fair.
  • Water Year 2016: Records good except for estimated daily discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 9,560 ft³/s, Dec. 15, 1959, gage height, 13.15 ft, from rating curve extended above 2,800 ft³/s; minimum discharge, 31 ft³/s, Sept. 22, 23, 1986.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - WATER TEMPERATURE: February 1995 to current year.
INSTRUMENTATION - Temperature recorder with 15-minute logging interval since February 1995.
REMARKS -
  • Water Year 2014: Water temperature records excellent.
  • Water Year 2015: Water temperature records excellent except for March 6 to May 25, which are good.
  • Water Year 2016: Water temperature records excellent.
  • Water Year 2017: Water temperature records excellent except for June 19 to Sept. 13, which are fair. No record Aug. 31-Sept. 13.
  • Water Year 2018: Water temperature records excellent. No record March 12-13, June 6-12, July 2-10, Aug. 17-20 and Sept. 5-10
  • Water Year 2019: Water temperature records excellent. No record Aug. 31, Sept. 1 and Sept. 30
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 16.2°C, July 29, 30, 2009; minimum, 1.2°C, Dec. 27, 2008.