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Water-Year Summary for Site 12026150

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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
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2019: 2018-10-01 to 2019-09-30

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USGS Water-Year Summary 2019
LOCATION - Lat 46°47'25", long 122°44'03" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.18, T.15 N., R.1 E., Thurston County, WA, Hydrologic Unit 17100103, on right bank 0.7 mi downstream from Bloody Run Creek, 1.2 mi downstream from Skookumchuck Dam, 12 mi northeast of Centralia, and at mile 20.7.
DRAINAGE AREA - 65.9 mi². Prior to August 1969, 61.7 mi².
PERIOD OF RECORD - April 1929 to November 1933, October 1939 to current year. Monthly discharge only for some periods, published in WSP 1316 and 1736. Published as "near Centralia" (12026000) prior to August 1969.
GAGE - Water-stage recorder. Datum of gage is 317.34 ft above NGVD of 1929. Apr. 1, 1929, to Sept. 30, 1931, and Feb. 1, 1932, to Dec. 6, 1933, nonrecording gage at site 1.1 mi upstream at different datum. Oct. 9, 1939, to July 31, 1969, at site 1.3 mi upstream at datum 301.04 ft above NGVD of 1929.
REMARKS - Flow regulated by Skookumchuck Dam since January 1971. No diversions 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.
  • Water Years 2016 and 2018: Records fair.
  • Water Year 2017: Records fair except estimated daily discharges, which are poor.
  • Water Year 2019: Records fair except estimated discharges, which are poor.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 9,020 ft³/s, Feb. 8, 1996, gage height, 13.41 ft, result of flow over dam computation, provided by Pacific Power & Light; minimum discharge, 12 ft³/s, May 28, 1970, caused by pumping during dam construction.