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Water-Year Summary for Site 12155300

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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 2020: 2019-10-01 to 2020-09-30

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USGS Water-Year Summary 2020
LOCATION - Lat 47°56'06", long 122°04'19" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.08, T.28 N., R.6 E., Snohomish County, WA, Hydrologic Unit 17110011, on right bank, 1.8 mi northeast of Snohomish, and at mile 3.6.
DRAINAGE AREA - 127 mi².
REVISIONS HISTORY - WDR-WA-2009: 1995-98(P),2000-08(P).
PERIOD OF RECORD - May 1992 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 30.00 ft above NGVD of 1929.
REMARKS - U.S. Geological Survey satellite telemeter at station.
  • Water Year 2014 to 2017: No estimated daily discharges. Records good except flows above 4,000 ft³/s, which are fair.
  • Water Year 2018: Records good except for Feb. 2 to Sept. 30, which are fair and discharges above 4,000 ft³/s and estimated discharges, which are poor.
  • Water Year 2019: Records fair except for estimated discharges, which are poor.
  • Water Year 2020: Records good except for Oct. 1 to Sept. 9, which are fair and estimated discharges, which are poor.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Nov. 24, 1990, reached a stage of 18.75 ft, from high-water mark at former bridge, discharge, 7,100 ft³/s (from slope-area measurement of peak flow).
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 13,900 ft³/s, Jan. 8, 2009, gage height, 20.39 ft; minimum daily mean discharge, 35.6 ft³/s, Aug. 28, 2015.