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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
12060500 SOUTH FORK SKOKOMISH RIVER NEAR UNION, WA
LOCATION - Lat 47°20'26", long 123°16'44" referenced to North American Datum of 1927, in sec.02, T.21 N., R.5 W., Mason County, WA, Hydrologic Unit 17110017, on right bank 3.0 mi upstream from Vance Creek, 3.2 mi upstream from confluence with North Fork, and 8.5 mi west of Union.
DRAINAGE AREA - 76.3 mi².
REVISIONS HISTORY - WDR WA-2014: 1997 (M).
Discharge for the period Jan. 28, 2016 to Mar. 5, 2019 and maximum discharge for water years 2017 and 2018 were revised on June 16, 2019 based on changes to the stage-discharge rating.
Gage height and discharge for the period Jan. 21, 2020 to Jan. 30, 2020 were revised on Feb. 01, 2022, based on errors discovered with the gage height corrections and shifts.
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 1931 to September 1984, October 1995 to current year.
GAGE - Water-stage recorder. Datum of gage is 103.35 ft above NGVD of 1929 and is 105.914 ft above NAVD of 1988.
REMARKS - No regulation or diversion upstream from station. U.S. Geological Survey satellite telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 25,700 ft³/s, Mar. 19, 1997, gage height, 8.98 ft, on basis of slope area measurement; maximum gage height, 11.0 ft, Jan. 22, 1935, Nov. 26, 1949; minimum daily discharge, 40.1 ft³/s(estimated), Sept. 22 2023; minimum instantaneous discharge 39.7 ft³/s(estimated), Sept. 22, 2023, minimum gage height, -0.07 ft, Sept 23, 2023.
