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Water-Year Summary for Site 12145500

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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 2022: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2022
LOCATION - Lat 47°32'24", long 121°54'28" referenced to North American Datum of 1927, in sec.27, T.24 N., R.7 E., King County, WA, Hydrologic Unit 17110010, on right bank at highway bridge 2.0 mi southwest of Fall City, and 2.6 mi upstream from mouth.
DRAINAGE AREA - 30.6 mi².
REVISIONS HISTORY - WSP 1316: Drainage area.
PERIOD OF RECORD - July 1945 to September 1950, water years 1951, and 1953-63 (annual maximum), December 1963 to June 1973, October 1973 to April 1974, October 1974 to current year.
GAGE - Water-stage recorder. Elevation of gage is 240 ft above NGVD of 1929, from topographic map. Prior to Oct. 2009 at same site, but at datum 10 ft higher. Prior to Oct. 1, 1950, water-stage recorder on left bank at same site. August 1951 and January 1953 to February 1963, crest-stage gage only on left bank at same site.
REMARKS - Some small diversions for irrigation and domestic use upstream from station. No regulation. U.S. Geological Survey satellite telemeter at station. 
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 6,220 ft³/s, Nov. 24, 1990, gage height, 6.56 ft, datum then in use; maximum gage height, 6.75 ft, Feb. 9, 1951, datum then in use; minimum daily discharge, 4.4 ft³/s, Aug. 21, 1967.