USGS Water-Year Summary 2024
14218480 YALE RESERVOIR NEAR COUGAR, WA
LOCATION - Lat 46°01'58", long 122°18'42" referenced to North American Datum of 1927, in NW 1/4 SE 1/4 sec.04, T.6 N., R.4 E., Cowlitz County, WA, Hydrologic Unit 17080002, on east shore, mid-reservoir, 1 mi SW of Cougar, WA.
DRAINAGE AREA - 596 sq. mi.
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2017 to current year. (February 2010 to September 2017 are unpublished, data available in files of Washington Water Science Center.)
GAGE - Water-stage recorder. Datum of gage is 3.64 ft above NAVD of 1988 (USGS GNSS survey Nov. 10, 2020).
COOPERATION - Gage is on the property of and in cooperation with Pacificorp.
EXTREMES FOR PERIOD OF RECORD - (Since Water Year 2018) Maximum elevation, 489.95 ft, Apr. 20, 2019; minimum elevation, 461.00 ft, Dec. 27, 2019