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USGS Water-Year Summary 2024
14238000 COWLITZ RIVER BELOW MAYFIELD DAM, WA
LOCATION - Lat 46°30'38", long 122°36'54" referenced to North American Datum of 1927, in SE 1/4 NE 1/4 sec.24, T.12 N., R.1 E., Lewis County, WA, Hydrologic Unit 17080005, on right bank 1.1 mi upstream from fish barrier dam, 1.4 mi downstream from Mayfield Dam, 1.5 mi upstream from Mill Creek, 2.1 mi downstream from Winston Creek, and at mile 50.6.
DRAINAGE AREA - 1,400 mi².
REVISIONS HISTORY - WSP 1318: 1949(M). WSP 1348: Drainage area. WSP 1718: 1943, 1947.
SURFACE-WATER RECORDS
PERIOD OF RECORD - August to October 1910, December 1910 to September 1911, October to November 1911 (monthly discharge only), April 1934 to current year. Published as "at Mayfield" water years 1910-11 and "near Mayfield" water years 1934-61.
GAGE - Water-stage recorder. Datum of gage is 226.6 ft above NGVD of 1929. August 1910 to November 1911 nonrecording gage at site 2.5 mi upstream at different datum. Apr. 27 to July 2, 1934, nonrecording gage at present site and datum.
REMARKS - Flow regulated by Riffe Lake (station 14234800) at mile 65.5 and Mayfield Reservoir (station 14237800) at mile 52.0. Minor diversions for domestic and farm use upstream from station. U.S. Geological Survey satellite telemeter at station. Sediment records October 1978 to September 1980. Water temperatures October 1950 to September 1980.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in December 1933 is known to have exceeded that of Nov. 28, 1995.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 68,400 ft³/s, Nov. 28, 1995; gage height, 26.19 ft; minimum discharge, 37 ft³/s, Apr. 16, 1962, gage height, 6.42 ft; minimum daily discharge, 451 ft³/s, Apr. 16, 1962.
