USGS Water-Year Summary 2024
453630122021400 COLUMBIA RIVER, LEFT BANK, NEAR DODSON, OR
LOCATION - Lat 45°36'30", long 122°02'14" referenced to North American Datum of 1927, Multnomah County, OR, Hydrologic Unit 17080001, on dock at The Fishery boat launch, 5 mi downstream from Bonneville Dam and at mile 140.3.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - BAROMETRIC PRESSURE: March 1996 to August 1997 (seasonal records only), October 1997 to May 2007, September 2007 to April 2009 (seasonal records only), September 2009 to current year.
INSTRUMENTATION - Meteorological monitor.
EXTREMES FOR PERIOD OF RECORD - BAROMETRIC PRESSURE: Maximum, 786 mmHg Feb. 24, 1997; minimum, 735 mmHg Jan. 4, 2008.
WATER-QUALITY RECORDS
PERIOD OF RECORD -
WATER TEMPERATURE: March 1996 to August 1997 (seasonal records only), October 1997 to May 2007, September 2007 to April 2009 (seasonal records only), September 2009 to current year.
TOTAL DISSOLVED GAS: March 1996 to August 1997 (seasonal records only), October 1997 to May 2007, September 2007 to April 2009 (seasonal records only), September 2009 to current year.
INSTRUMENTATION - Water-quality monitor.
EXTREMES FOR PERIOD OF DAILY RECORD -
WATER TEMPERATURE: Maximum, 23.9°C Aug. 15, 2021; minimum, 0.4°C Jan. 16, 17, 2017.
TOTAL DISSOLVED GAS: Maximum, 1090 mmHg June 5, 6, 11, 1997; minimum, 722 mmHg July 14, 2001.