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Water-Year Summary for Site 12353000

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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: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2020
LOCATION - Lat 46°52'07.08", long 114°07'39.89" referenced to North American Datum of 1983, in NW 1/4 NE 1/4 SE 1/4 sec.21, T.13 N., R.20 W., Missoula County, MT, Hydrologic Unit 17010204, on right bank 1.0 mi downstream from Bitterroot River, 4.5 mi west of Missoula, and at river mile 349.5.
DRAINAGE AREA - 9,017 mi².
REVISIONS HISTORY - Water Supply Paper (WSP) 1042: 1931. WSP 1246: Drainage area. WSP 1316: 1932, maximum discharge (M); 1935 (M); 1946 (M).
PERIOD OF RECORD - October 1929 to current year.
GAGE - Water-stage recorder. Elevation of gage is 3,083.88 ft, referenced to the National Geodetic Vertical Datum of 1929 (levels by U.S. Army Corps of Engineers).
10-03-2018 to 10-03-2019: records are good.
10-19-2017 to 10-02-2018: records are good.
10-07-2016 to 10-18-2017: records are good, except June 13 to July 25 are fair, and estimated records are poor.
11-04-2015 to 10-06-2016: records are good.
10-08-2014 to 11-03-2015: records are good.  
10-01-2013 to 10-07-2014: records are good. 

Diversions for irrigation of about 235,000 acres occur upstream from station.