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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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USGS Water-Year Summary 2024
14019220 COLUMBIA RIVER AT MCNARY DAM LOCK NEAR UMATILLA, OR
LOCATION - Lat 45°56'29", long 119°17'31" referenced to North American Datum of 1927, Benton County, WA, Hydrologic Unit 17070101, on McNary Dam on the Columbia River, 1.5 mi northeast of the town of Umatilla OR, at mile 292.3
DRAINAGE AREA - 214,000 mi²
WATER-QUALITY RECORDS
PERIOD OF RECORD - April 2009 to Sept. 2022 (seasonal records only). Seasonal records from April 2005 to September 2022 are available from the U.S. Geological Survey Kennewick Field Office.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: April 2009 to Sept. 2022 (seasonal records only).
TOTAL DISSOLVED GAS: April 2009 to Sept. 2022 (seasonal records only).
INSTRUMENTATION - Water quality monitor with a 1-hour logging interval since 2005.
REMARKS - The USACE manages spill levels for fish passage to avoid exceeding 120% total dissolved gas (TDG) in project tailraces and 115% TDG in the forebay of the next project downstream consistent with the current percent TDG limits.
EXTREMES FOR PERIOD OF DAILY RECORD -
WATER TEMPERATURE: Maximum recorded, 22.8°C, July 30, 2009 and August 2, 2021; minimum recorded, 3.7°C, March 11, 2011, but may have been higher or lower during periods of missing record.
TOTAL DISSOLVED GAS: Maximum recorded, 123 percent saturation, June 10, 2011, July 8, 2012, June 3, 2017, June 27, 2022; minimum recorded, 98 percent saturation, Oct. 1, 2009, but may have been higher or lower during periods of missing record.
