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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
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USGS Water-Year Summary 2024
12096500 PUYALLUP RIVER AT ALDERTON, WA
LOCATION - Lat 47°11'07", long 122°13'42" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 sec.25, T.20 N., R.4 E., Pierce County, WA, Hydrologic Unit 17110014, at State Highway 162 road crossing, 1.0 mile north of Alderton, 1.0 mile south of Sumner, and at mile 12.2.
DRAINAGE AREA - 438 mi².
REVISIONS HISTORY - WSP 870: Drainage area. WSP 1316: 1917(M), 1919-27(M). WSP 1396: 1945(P).
The maximum discharge for water years 2007 and 2009 were revised on August 11, 2020 based on further analysis of recorded instantaneous gage heights and discharges.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1914 to February 1927, October 1943 to April 1957. October 1981 to September 1995 (discharge measurements only), October 1996 to June 2007 (annual maximum). July 1, 2007 to current year.
GAGE - Water stage recorder and crest-stage gage. Datum of gage is NGVD 1929 and is 4.433 ft above NAVD of 1988 (levels by USGS on Dec. 16, 2021).
REMARKS - Water diverted and returned upstream by Puget Power for power generation. No other regulation. U.S. Geological Survey satellite telemeter at station.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood in 1906 reached a stage of 66.3 ft, from floodmarks (discharge not determined).
EXTREMES FOR PERIOD OF RECORD - 1914-27, 1943-57, 2008 to current year: Maximum discharge, 53,600 ft³/s Jan. 7, 2009 (elevation, 61.27 ft); minimum daily discharge, 150 ft³/s Nov. 29, Dec. 1, 1952.
