USGS Water-Year Summary for Site 12186000

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

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

12186000 SAUK RIVER ABOVE WHITE CHUCK RIVER, NEAR DARRINGTON, WA

LOCATION - Lat 48°10'08", long 121°28'10" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.23, T.31 N., R.10 E., Snohomish County, WA, Hydrologic Unit 17110006, Mount Baker National Forest, on right bank 0.6 mi upstream from White Chuck River, 8.4 mi southeast of Darrington, and at mile 32.5.

DRAINAGE AREA - 152 mi².

REVISIONS HISTORY - WSP 752: 1932. WSP 1286: 1918(M), 1920(M), 1921, 1922(M), 1932(M), 1934(M), 1946-47(M), 1949.

SURFACE-WATER RECORDS

PERIOD OF RECORD - August to November 1910 (fragmentary gage heights only), October 1917 to September 1922, August 1928 to current year. Monthly discharge only for April and May 1921, published in WSP 1316.

GAGE - Water-stage recorder. Elevation of gage is 930 ft above NGVD of 1929 (from river-profile map) and is 925.45 ft above NAVD of 1988 (USGS GNSS2 survey Aug. 24, 2022). Prior to Nov. 18, 1910, non-recording gage 0.5 mi downstream at different datum.

REMARKS - No regulation or diversion upstream from station. U.S. Geological Survey satellite telemeter at station.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 44,000 ft³/s, Oct 20, 2003, gage height, 15.39 ft, from rating curve extended above 15,000 ft³/s, on basis of slope-area measurement; maximum gage height, 16.03 ft, Dec 26, 1980; minimum daily discharge, 90 ft³/s, Nov 6, 2002, but may have been lower during period of missing record.

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD - WATER TEMPERATURE: Oct. 2016 to current year. TURBIDITY: Sept. 2011 to Oct. 2015.

INSTRUMENTATION - Water temperature sensor interfaced with a Data Collection Platform/Electronic Datalogger, with 15-minute recording interval, since October 2016.

REMARKS - U.S. Geological Survey satellite telemeter at station.

EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 20.8°C, Aug. 15, 2023; minimum, -0.2°C, Dec. 21, 2022. TURBIDITY: Maximum, 820 FNU, Dec. 9, 2014; minimum, 0.0 FNU several days in Aug. and Sept. 2015.