USGS Water-Year Summary 2021
12191600 BAKER LAKE AT UPPER BAKER DAM NEAR CONCRETE, WA
LOCATION - Lat 48°38'58", long 121°41'22" referenced to North American Datum of 1927, in SW 1/4 sec.31, T.37 N., R.9 E., Whatcom County, WA, Hydrologic Unit 17110005, at upper Baker Dam on Baker River near center of dam, 0.3 mi upstream from Sulphur Creek, 8.0 mi north of Concrete, and at mile 9.3.
DRAINAGE AREA - 215 mi².
PERIOD OF RECORD - July 1959 to current year.
GAGE - Water-stage recorder. Datum of gage is NAVD of 1988. Prior to Oct. 1, 2004, datum of gage was 3.77 ft higher at NGVD of 1929.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 287,930 acre-ft, July 12, 1972, elevation, 728.26 ft, present datum; minimum contents since normal operating level was reached in Aug. 1960, 100,658 acre-ft, Mar. 9, 2011, elevation, 677.76 ft, present datum.