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Water-Year Summary for Site 12449950

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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.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00060 Discharge(Mean)  
00065 Gage height(Mean)  

Water year 2019: 2018-10-01 to 2019-09-30

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USGS Water-Year Summary 2019
LOCATION - Lat 48°04'39", long 119°59'02" referenced to North American Datum of 1927, in SE 1/4 SW 1/4 sec.20, T.30 N., R.23 E., Okanogan County, WA, Hydrologic Unit 17020008, on right bank 1.4 mi downstream from Black Canyon Creek, 4.3 mi northwest of Pateros, and at mile 6.7.
DRAINAGE AREA - 1,772 mi².
REVISIONS HISTORY - WSP 1933: Drainage area.
PERIOD OF RECORD - April 1959 to current year. Water temperature October 1968 to October 1970.
GAGE - Water-stage recorder. Elevation of gage is 900 ft above NGVD of 1929, from topographic map. Prior to Dec. 17, 1964, nonrecording gage at same site and datum.
REMARKS - Diversions for irrigation of about 11,000 acres upstream from station (1959 Bureau of Reclamation land classification). U.S. Geological Survey satellite telemeter at station.
  • Water Years 2014 to 2019: Records good except for estimated daily discharges which are fair.
EXTREMES OUTSIDE PERIOD OF RECORD - Maximum discharge since 1894, 46,700 ft³/s, May 29, 1948, determined by slope-area measurement of peak flow at site 1 mi downstream.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 28,800 ft³/s, May 31, 1972, gage height, 12.25 ft; minimum daily discharge, 150 ft³/s, Jan. 8-10, 1974, result of freezeup.