USGS Water-Year Summary 2017
12398550 BOUNDARY DAM RESERVOIR NEAR METALINE FALLS, WA
LOCATION - Lat 48°59'20", long 117°20'55" referenced to North American Datum of 1927, in NE 1/4 NE 1/4 sec.10, T.40 N., R.43 E., Pend Oreille County, WA, Hydrologic Unit 17010216, at Boundary Dam 1.0 mi upstream from international boundary, 8.8 mi north of Metaline Falls, and at mile 17.
DRAINAGE AREA - 25,200 mi².
PERIOD OF DAILY RECORD - WATER TEMPERATURE: April 1999 to current year.
TOTAL DISSOLVED GAS: April 1999 to current year.
BAROMETERIC PRESSURE: October 2013 to current year.
REVISED RECORDS - WDR WA-03-1: Revised figures of maximum, minimum, and mean of total partial pressure for 1999 and 2000 water years.
INSTRUMENTATION - Water-quality monitor with a 15-minute logging interval since April 1999.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum recorded, 25.8°C, July 9, 2015 , but may have been higher during periods of missing record; minimum recorded, 0.0°C, at times during winter periods.
TOTAL DISSOLVED GAS: Maximum recorded, 139 percent saturation, June 23 and 24, 2013; minimum, 90 percent saturation, Sept. 2, 2003, Feb. 11, 2008, Jan. 3, 4, 2009, and Dec. 26, 2009, but may have been lower during periods of missing record.
BAROMETRIC PRESSURE: Maximum 729 mm/Hg, Dec. 30, 2014 but may have been higher during periods of missing record; minimum, 688 mm/Hg, Nov. 28, 2014 but may have been lower during periods of missing record.