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Water-Year Summary for Site 12189500

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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.
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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  
00065 Gage height(Mean)  
63680 Turbidity, Form Neph(Med.)  

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

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USGS Water-Year Summary 2023
LOCATION - Lat 48°25'29", long 121°34'02" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.19, T.34 N., R.10 E., Skagit County, WA, Hydrologic Unit 17110006, on left bank, 4.4 mi southeast of Rockport, 7.6 mi southeast of Sauk, 7.8 mi downstream from Suiattle River, and at mile 5.4.
DRAINAGE AREA - 714 mi².
REVISIONS HISTORY - WSP 1286: 1929, 1937, 1939.

Revisions: Turbidity records for the period Feb. 12, 2020 to Nov. 13, 2020, were revised on Mar. 17, 2022, EDL data became available to fill a section of DCP truncated data during the peak of Oct. 16-17, 2020.

PERIOD OF RECORD - August to October 1910 (fragmentary gage heights), March 1911 to August 1912, July 1928 to current year. Published as "near Suiattle Crossing, near Sauk" 1910-12.
GAGE - Water-stage recorder. Datum of gage is 266 ft above NGVD of 1929 (from river-profile survey). Prior to Aug. 4, 1912, non-recording gages at several sites 1.0 mi downstream to 5.0 mi upstream from present site at various datums. July 24, 1928, to Sept. 16, 1929, non-recording gage at present site and datum.
REMARKS - No regulation. Small diversion for millpond at Darrington and for domestic use. U.S. Geological Survey satellite telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 106,000 ft³/s, Oct. 21, 2003, gage height, 18.96 ft, from rating extended above 50,000 ft³/s; minimum discharge, 572 ft³/s Dec. 5, 1929, but may have been less during period of ice effect Jan. 10-27, 1930.
PERIOD OF DAILY RECORD - TURBIDITY: September 2011 to September 2016 and August 1, 2018 to April 23, 2021. WATER TEMPERATURE: October 2016 to present.
INSTRUMENTATION - Turbidity sensor (FTS DTS-12) and a digital water temperature sensor interfaced with a Data Collection Platform/Electronic Datalogger, with 15-min recording interval, since September 2011. Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government.
REMARKS - U.S. Geological Survey satellite telemeter at station.
EXTREMES FOR PERIOD OF DAILY RECORD - Turbidity: Maximum, 1,340 FNU, Oct. 17, 2020. minimum, 0.5 FNU, Dec. 21, 2013. Water Temperature: Maximum, 20.2°C, Aug. 15, 2023; minimum, 0.0°C, several days during winter.