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USGS Water-Year Summary 2024
12101000 LAKE TAPPS NEAR SUMNER, WA
LOCATION - Lat 47°14'28", long 122°11'26" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.08, T.20 N., R.5 E., Pierce County, WA, Hydrologic Unit 17110014, 1.7 mi east of Dieringer, and 3.5 mi northeast of Sumner.
REVISIONS HISTORY - WDR-WA-09-1: Elevation of gage datum.
SURFACE-WATER RECORDS
PERIOD OF RECORD - November 1911 to current year. October 1934 to October 1950, change in contents published with records for Puyallup River at Puyallup. Monthend contents only November 1911 to September 1950, published in WSP 1316.
GAGE - Water-stage recorder. Datum of gage is 0.5 ft below NGVD of 1929.
COOPERATION - Prior to October 1, 1990, and July 1996 to May 1997, gage-height record furnished by Puget Sound Energy. Contents curve furnished by Puget Sound Energy.
REMARKS - Reservoir is formed by a diked natural lake into which a large part of the low-water flow of White River is diverted. Construction of dike began June 1910; storage began in 1911. Usable capacity (based on 1959 resurvey; capacity table dated July 28, 1959, put into use Oct. 1, 1958), 46,660 acre-ft between gage heights of 515 ft, normal minimum pool, and 543 ft, normal maximum pool. Storage below 515 ft unknown. Figures given herein represent usable contents. Reservoir was used for power development at the White River Powerplant at Dieringer until January 15, 2004. U.S. Geological Survey satellite telemeter at station.
EXTREMES FOR PERIOD OF RECORD - Maximum contents observed, 51,710 acre-ft, June 30, 1958, gage height, 541.57 ft, capacity table dated Jan. 19, 1920; maximum gage height observed, 543.07 ft, July 8, 1990, May 7, 2022; minimum contents observed, not determined (below normal minimum pool) Mar. 14, 2003, gage height, 498.91 ft.
