USGS Water-Year Summary 2020
12043000 CALAWAH RIVER NEAR FORKS, WA
LOCATION - Lat 47°57'37", long 124°23'30" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 sec.04, T.28 N., R.13 W., Clallam County, WA, Hydrologic Unit 17100101, on left bank 30 ft downstream from U.S. Highway 101 bridge, 0.8 mi northwest of Forks, and at mile 6.6.
DRAINAGE AREA - 129 mi².
- WSP 1316: 1898-1902. WSP 1736: Drainage area.
PERIOD OF RECORD - November 1897 to December 1901, October to December 1975 (discharge measurements and peak discharges), January 1976 to September 1980, March 1984 to current year. Monthly and peak discharge only, November 1897 and August 1898, published in WSP 1316. Published as Calowa River at Forks, November 1897 to December 1899; as Calowa River near Forks, 1900; and as Kalawa River near Forks, 1901.
GAGE - Water-stage recorder, crest-stage gage, Turbidity sensor, and Water Temperature sensor. Datum of gage is 201.58 ft above NGVD of 1929. November 1897 to December 1901, nonrecording gage at same site but at different datum; October to December 1975, nonrecording gage and crest-stage gage at same site and datum.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 38,100 ft³/s, Nov. 6, 2006, gage height, 21.41 ft, from rating curve extended above 10,000 ft³/s on basis of step-backwater analysis; minimum discharge, 15 ft³/s, Sept. 28, 1899.
PERIOD OF RECORD
Turbidity: September 2018 to present.
Water Temperature: December 2019 to present.
PERIOD OF DAILY RECORD - Turbidity and Water Temperature.
INSTRUMENTATION - Forrest Technology Systems (FTS) DTS-12 Turbidity sensor and (FTS) DigTemp temperature sensor interfaced with a Data Collection Platform/Electronic Data logger, with 15-min recording internal, Turbidity since September 2018 and Temperature since December 2019.
EXTREMES FOR PERIOD OF DAILY RECORD
TUBIDIDTY: Maximum, FNU, ; minimum, FNU, .
WATER TEMPERATURE: Maximum, 12.1°C, Aril,15, 2020; minimum, 3.3°C, Jan. 15, 2020.