USGS Water-Year Summary 2024
14222500 EAST FORK LEWIS RIVER NEAR HEISSON, WA
LOCATION - Lat 45°50'13", long 122°27'54" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.17, T.4 N., R.3 E., Clark County, WA, Hydrologic Unit 17080002, on right bank 60 ft downstream from Basket Creek, 1.5 mi northeast of Heisson, 3.4 mi southwest of Yacolt, and at mile 20.2.
DRAINAGE AREA - 125 mi².
REVISIONS HISTORY - WDR-WA-2012: 2007 (P,M), 2008 (P,M), 2009 (P,M), 2010 (P,M), 2012 (P,M).
SURFACE-WATER RECORDS
PERIOD OF RECORD - September 1929 to current year.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 357.84 ft above NAVD of 1988 (USGS GNSS level survey completed Sept. 1, 2022), and 356.8 ft above NGVD of 1929 (from river-profile survey). Prior to Oct. 1, 1987, at datum 10.00 ft higher.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 28,600 ft³/s, Feb. 8, 1996, from indirect measurement, gage height, 25.26 ft; minimum discharge, 29 ft³/s, Nov. 3, 1935, Sept. 27, 28, 1967.