USGS Water-Year Summary 2020
12150400 SNOQUALMIE RIVER AT DUVALL, WA
LOCATION - Lat 47°44'36", long 121°59'12" referenced to North American Datum of 1927, in SW 1/4 NW 1/4 sec.13, T.26 N., R.6 E., King County, WA, Hydrologic Unit 17110010, on right bank at downstream side of abandoned bridge pier 100 ft south of the present Woodinville-Duvall Rd. bridge in Duvall.
DRAINAGE AREA - 645 mi².
PERIOD OF RECORD - October 2000 to current year.
GAGE - Water stage recorder and crest-stage gage.
EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 45.18 ft, Jan. 8, 2009.