USGS Water-Year Summary 2024
12113350 GREEN RIVER AT TUKWILA, WA
LOCATION - Lat 47°27'55", long 122°14'50" referenced to North American Datum of 1927, in NW 1/4 SW 1/4 sec.24, T.23 N., R.4 E., King County, WA, Hydrologic Unit 17110013, on left bank under Interurban Ave S bridge in Tukwila, 1.4 mi upstream from Black River, and at mile 12.4.
DRAINAGE AREA - 440 mi².
REVISIONS HISTORY - The minimum gage height for the period of record was revised on January 21, 2022, based on revision of reference gage reading made September 2, 1999.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1960 to September 1984 (discharge). October 1998 to current year (stage only).
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is NGVD of 1929 (Corps of Engineers benchmark) and is 3.37 ft above NAVD of 1988 (USGS GNSS survey).
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Nov. 24, 1959, reached a stage of 22.63 ft.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 21.70 ft, Jan. 31, 1965; minimum gage height, 1.38 ft, July 20, 21, 2023.