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Water-Year Summary for Site 12120600

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

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USGS Water-Year Summary 2022
LOCATION - Lat 47°27'27", long 122°00'14" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.26, T.23 N., R.6 E., King County, WA, Hydrologic Unit 17110012, on left bank 20 ft downstream from highway bridge, 2.9 mi northwest of Hobart, and 10.2 mi upstream from mouth, 1.6 mi northwest of Issaquah, and at mile 33.1 (continuation of Sammamish River).
DRAINAGE AREA - 17.6 mi².
PERIOD OF RECORD - October 1986 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 300 ft above NGVD of 1929, from topographic map.
REMARKS - No known regulation or diversion upstream from station. U.S. Geological Survey satellite telemeter at station. 
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1,360 ft³/s, Nov. 24, 1990, Nov. 6, 2006; maximum gage height, 9.90 ft, Nov. 24, 1990; minimum discharge, 5.3 ft³/s, Sept. 17-20, 1992.