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Water-Year Summary for Site 12115000

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  

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

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USGS Water-Year Summary 2022
12115000 CEDAR RIVER NEAR CEDAR FALLS, WA
LOCATION - Lat 47°22'13", long 121°37'26" referenced to North American Datum of 1927, in SE 1/4 SW 1/4 sec.23, T.22 N., R.9 E., King County, WA, Hydrologic Unit 17110012, Snoqualmie National Forest, on downstream side of bridge 1.4 mi upstream from Chester Morse Lake, 8.3 mi southeast of town of Cedar Falls, and at mile 43.5.
DRAINAGE AREA - 40.7 mi².
REVISIONS HISTORY - WSP 1286: 1946-48, 1950(P), 1951. WSP 1516: 1946(M), 1947-48(P), 1950-51(M), 1953-54(P), 1955(M). WSP 1932: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1945 to current year.
GAGE - Water-stage recorder. Datum of gage is 1,560 ft above NGVD of 1929 (from topographic map) and 1,569.823 ft above NAVD of 1988. Prior to Oct. 26, 1957, at site 80 ft downstream at same datum.
REMARKS - No regulation or diversion upstream from station. U.S. Geological Survey satellite telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 9,490 ft³/s, Nov. 22, 1959, gage height, 11.34 ft, from high-water mark in well, from rating curve extended above 4,300 ft³/s, on basis of slope-area measurements at gage heights 10.16 ft and 11.34 ft; maximum gage height, 11.4 ft, Feb. 11, 1951, backwater from Chester Morse Lake; minimum discharge, 19 ft³/s, Oct. 23-26, 29-31, 1987.
WATER-QUALITY RECORDS
PERIOD OF DAILY RECORD - WATER TEMPERATURE: May 1997 to current year.
INSTRUMENTATION - Temperature recorder since May 1997, with 15-min. logging interval since May 2006.
REMARKS - Additional details are available from the Washington Water Science Center. Continuous water quality record is no longer rated, as of water year 2021. Prior ratings can be obtained via request to the Washington Water Science Center.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 16.5°C, Sept. 14, 1998; minimum, 0.0°C, March 19, 2002.