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Water-Year Summary for Site 13341050

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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
00010 Temperature, water(Min.,Max.,Mean)  
00048 Pressure, diss gases(Mean,Max.)  
00060 Discharge(Mean)  

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

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USGS Water-Year Summary 2019
LOCATION - Lat 46°30'01", long 116°23'33" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 sec.01, T.36 N., R.1 W., Nez Perce County, ID, Hydrologic Unit 17060306, Southwick quad., on left bank 5 mi downstream from Dworshak Dam, 2 mi upstream from Big Canyon Creek, 2.2 mi northeast of Peck, 3 mi downstream from North Fork Clearwater River, and at mile 37.4.
DRAINAGE AREA - 7,976 mi².
REVISIONS HISTORY - WDR-US-2010: Drainage area.
PERIOD OF RECORD - October 1964 to current year.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is arbitrary.
REMARKS - Flow regulated by Dworshak Reservoir (station 13340950) 5.1 mi upstream beginning September 1971.
  • Water Year 2015: Records good except for Nov. 25, which is fair.
  • Water Year 2016: Records good.
  • Water Year 2017: Records good.
  • EXTREMES OUTSIDE PERIOD OF RECORD - Flood of June 8, 1964, reached a stage of 23.95 ft, from floodmark, discharge, 118,000 ft³/s, from rating extended above 89,100 ft³/s.
    EXTREMES FOR PERIOD OF RECORD - UNREGULATED PERIOD (1965-71): Maximum discharge prior to regulation by Dworshak Reservoir, 107,000 ft³/s May 13, 1971, maximum gage height, 25.00 ft, Dec. 28, 1967, result of ice jam; minimum, 1,630 ft³/s Nov. 30. 1969, gage height, 2.70 ft. REGULATED PERIOD (1972 to current year): Maximum discharge since regulation began, 127,000 ft³/s June 16, 1974, gage height, 23.66 ft; minimum, 1,260 ft³/s Oct. 31, 1971, gage height, 2.24 ft.
    Continuous water temperature: Oct. 1964 to Sept. 1984, Oct. 1985 to current year.
    Continuous total dissolved gas: April 2009 to current year (seasonal record only).
    REMARKS - Numerical uncertainty is not currently computed for time-series water-quality records but qualitative ratings are provided based on professional judgment.
  • Water Year 2014:
    Quality of water temperature records is good.
    Quality of total dissolved gas records is good.
  • Water Year 2015:
    Quality of water temperature records is good.
    Quality of total dissolved gas records is good.
  • Water Year 2016:
    Quality of water temperature records is good.
    Quality of total dissolved gas records is good.
  • The practice of using qualitative ratings to describe data accuracy was discontinued in Water Year 2017. 
    Water Temperature: Maximum, 25.0 °C Aug. 1-2, 1965; minimum, 0.0 °C many days during winter months.
    Total Dissolved Gas: Maximum recorded, 118 percent saturation, many days July and August 2017; minimum, 95 percent saturation, February 10, 2017, but may have been higher or lower during periods of missing records.