USGS Water-Year Summary 2019
13343590 LOWER GRANITE LAKE FOREBAY AT LOWER GRANITE DAM, WA
LOCATION - Lat 46°39'34", long 117°25'31" referenced to North American Datum of 1927, Whitman County, WA, Hydrologic Unit 17060107, on Lower Granite Dam on the Snake river, 12.5 miles southwest of the town of Pullman Wa, at mile 107.5
DRAINAGE AREA - Not determined.
PERIOD OF RECORD - April 2009 to current year (seasonal records only). USACE Walla Walla has data for April 1985 to September 2003. Seasonal records from April 2004 to September 2008, available in files of the U.S. Geological Survey Kennewick Field Office.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: April 2009 to current year (seasonal records only).
TOTAL DISSOLVED GAS: April 2009 to current year (seasonal records only).
INSTRUMENTATION - Water quality monitor with 1-hour logging interval.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum recorded, 21.7°C, August 23-24, 2015; minimum recorded, 4.0°C, March 3, 4, 2012, but may have been higher or lower during periods of missing record.
TOTAL DISSOLVED GAS: Maximum recorded, 110 percent saturation, June 09, 2010 and June 27, 2011; minimum, 95 percent saturation, Sept. 30, 2009, but may have been higher or lower during periods of missing record.