USGS Water-Year Summary 2021
12166185 NORTH FORK STILLAGUAMISH RIVER AT C POST BRIDGE NEAR DARRINGTON, WA
LOCATION - Lat 48°17'00.91", long 121°49'49.88" referenced to North American Datum of 1983, in sec.06, T.32 N., R.8 E., Snohomish County, WA, Hydrologic Unit 17110008,
DRAINAGE AREA - 144 mi². 140 mi²
PERIOD OF RECORD - April 2014 to present.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is North American Vertical Datum of 1988.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 18,600 ft³/s, Nov. 17, 2015, gage height, 283.32 ft; maximum gage height, 287.81 ft. (backwater affected) on April 9, 2014; minimum daily discharge, 104 ft³/s, Sept. 6, 2019, estimated.
PERIOD OF DAILY RECORD - TURBIDITY: September 2015 to November 2019.
INSTRUMENTATION - TURBIDITY: Turbidity sensor (FTS DTS-12) interfaced with a Data Collection Platform/Electronic Data Logger, with 15-min recording interval, since September 2015. 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.
EXTREMES FOR PERIOD OF DAILY RECORD - TURBIDITY: Maximum, 1,370 FNU, Nov. 22, 2017; minimum, 0.01 FNU, Nov. 8, 2019.