USGS Water-Year Summary for Site 14105700

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00025 Air pressure(Max.,Min.,Mean)
	00047 Pressure, diss gases(Max.,Min.,Mean)
	00060 Discharge(Mean)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

14105700 COLUMBIA RIVER AT THE DALLES, OR

LOCATION - Lat 45°36'29.8", long 121°11'23.7" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 sec.34, T.2 N., R.13 E., Wasco County, OR, Hydrologic Unit 17070105, U.S. Army Corps of Engineers land, on left bank, 0.3 mi downstream from Mill Creek, 2.6 mi downstream from The Dalles Dam and at mile 188.9.

DRAINAGE AREA - 237,000 mi². approximately.

REVISIONS HISTORY -

WSP 534: 1920(m). SP 1094: 1894. WSP 1248: 1866, 1888, 1899, 1909. WSP 1518: 1876(M).

Revisions: Discharges approved and reported via NWISWeb for period Nov. 7, 2013 to Dec. 4, 2014 were revised water year 2015.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1857 to September 1877 (annual maximum only, at Lower Cascades Landing, published in WSP 1318), June 1878 to current year. Published as "near The Dalles" 1936-56.

GAGE - Ultrasonic velocity meter (UVM) with water-stage and velocity-index recorder, and crest-stage gage. Datum of gage is NGVD of 1929. See WSP 1738 for history of changes prior to Mar. 16, 1957. Mar. 16, 1957 to Sept 30, 1968, water-stage recorder at site 0.4 mi upstream at same datum.

REMARKS - Considerable regulation by many large reservoirs. Diurnal fluctuations caused by powerplant and gates at The Dalles Dam. Many diversions for irrigation upstream from station.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge since 1858, 1,240,000 ft³/s June 6, 1894, gage height, 106.5 ft; minimum discharge since 1878, 12,100 ft³/s Apr. 16, 1968 (result of closure of John Day Dam, recorded by UVM).

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - BAROMETRIC PRESSURE: June 1996 to September 2005 (seasonal records only), March 1997 to current year.

INSTRUMENTATION - Meteorological monitor.

EXTREMES FOR PERIOD OF RECORD - BAROMETRIC PRESSURE: Maximum, 784 mmHg Dec. 30, 2014; minimum, 733 mmHg Jan. 4, 2008.

REMARKS - BAROMETRIC PRESSURE: Collection, computation, and publication of barometric pressure data do not necessarily conform to standards used by the National Weather Service. Records published in this report are for general scientific use.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

WATER TEMPERATURE: June 1996 to September 2005 (seasonal records only), March 1997 to current year.

TOTAL DISSOLVED GAS: June 1996 to September 2005 (seasonal records only), March 1997 to current year.

INSTRUMENTATION - Water-quality monitor.

REMARKS - Sensor depth collected at this location is not referenced in this document.

EXTREMES FOR PERIOD OF DAILY RECORD -

WATER TEMPERATURE: Maximum, 23.5°C Aug. 14, 1998, July 31, 2009; minimum, 1.0°C Jan. 18, 19, 2017.

TOTAL DISSOLVED GAS: Maximum, 1010 mmHg June 10, 1997; minimum, 717 mmHg Dec. 25, 26, 2008.