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Water-Year Summary for Site 12447200

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
12447200 OKANOGAN RIVER AT MALOTT, WA
LOCATION - Lat 48°16'53", long 119°42'12" referenced to North American Datum of 1927, in SW 1/4 sec.09, T.32 N., R.25 E., Okanogan County, WA, Hydrologic Unit 17020006, on right bank 75 ft upstream from highway bridge at Malott, 0.1 mi upstream from Loup Loup Creek, and at mile 17.0.
DRAINAGE AREA - 8,080 mi².
REVISIONS HISTORY - WDR WA-75-1: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 1958 to current year. April 1958 to September 1965, published as "near Malott." Records published for both sites December 1965 to July 1967.
GAGE - Water-stage recorder. Datum of gage is 783.55 ft above NGVD of 1929. April 1958 to November 1965, water-stage recorder at site 3.9 mi downstream at NGVD of 1929.
REMARKS - Diversions upstream from station for irrigation of about 22,000 acres in the United States and 55,000 acres in Canada. Flow regulated by Okanagan and Skaha Lakes and by natural storage in other lakes. U.S. Geological Survey satellite telemeter at station. Published as "near Brewster" prior to 1964 and as "near Malott" 1963-66 (station 12447300).

 

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 45,600 ft³/s, June 3, 1972, gage height, 22.16 ft; minimum observed, 288 ft³/s, Sept. 4, 1970, gage height, 2.03 ft.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Daily water temperature records November 1969 to June 1971 and March 2005 to current year. Chemical analyses 1959-62, 1963-70 (partial record station), 1972, 1975-94.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: November 1969 to June 1971, March 2005 to current year.
INSTRUMENTATION - Water temperature recorder with 15-minute logging interval since March 2005.
REMARKS -
 
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 29.5°C, July 24, 2006; minimum, -0.2°C, on many days during winter.