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Water-Year Summary for Site 06016000

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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)  

Water year 2020: 2019-10-01 to 2020-09-30

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USGS Water-Year Summary 2020
LOCATION - Lat 45°06'58.06", long 112°45'01.78" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 SE 1/4 sec.19, T.8 S., R.9 W., Beaverhead County, MT, Hydrologic Unit 10020002, on left bank 1.4 mi upstream from Barretts, 2.2 mi downstream from Grasshopper Creek, 8.9 mi southwest of Dillon, and at river mile 2,469.2.
DRAINAGE AREA - 2,730 mi².
REVISIONS HISTORY - WSP 1279: 1908(M), 1910-12(M), 1929(M), 1935-36. WSP 1559: Drainage area.
PERIOD OF RECORD - September 1907 to September 1986, October 1986 to current year (seasonal records only). Monthly discharge only for some periods are published in Water Supply Paper (WSP) 1309. Prior to October 1963, site was published as "at Barratts."
GAGE - Water-stage recorder. Elevation of gage is 5,268.17 ft, referenced to the National Geodetic Vertical Datum of 1929. Prior to Oct. 19, 1934, nonrecording gages at same site and elevation.
03-01-2020 to 10-31-2020 (seasonal record): records are good.
03-01-2019 to 10-31-2019 (seasonal record): records are good, except estimated records are poor.
02-27-2018 to 11-06-2018 (seasonal record): records are good.
02-23-2017 to 11-04-2017 (seasonal record): records are good.
03-01-2016 to 11-02-2016 (seasonal record): records are good.
03-01-2015 to 11-05-2015 (seasonal record): records are good. 
03-01-2014 to 10-31-2014 (seasonal record): records are good, except estimated records are fair.  

Some regulation occurs by Lima Reservoir (station number 06012000) and nearly complete regulation 
occurs by Clark Canyon Reservoir (station number 06015300) since August 1964. Diversions for 
irrigation include about 90,000 acres above station.