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Water-Year Summary for Site 06085800

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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 2018: 2017-10-01 to 2018-09-30

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USGS Water-Year Summary 2018
LOCATION - Lat 47°30'05.86", long 111°55'54.89" referenced to North American Datum of 1983, in NW 1/4 NW 1/4 SE 1/4 sec.12, T.20 N., R.3 W., Cascade County, MT, Hydrologic Unit 10030104, on left bank on downstream side of Montana Secondary Highway 565 bridge, 0.7 mi downstream from Simms Creek, 0.7 mi north of Simms, and at river mile 45.0.
DRAINAGE AREA - 1,296 mi².
REVISIONS HISTORY - Water Data Report MT-75-1: 1964, maximum discharge.
PERIOD OF RECORD - May to June 1953 in Water Supply Paper (WSP) 1320-B, May to June 1964 in WSP 1840-B, April 1966 to September 1979, April 1997 to October 2004; April 2005 to current year (seasonal records April 2005 to October 2007).
GAGE - Water-stage recorder. Elevation of gage is 3,570 ft, referenced to the North American Vertical Datum of 1988. May 1941 to October 1965, nonrecording gage at different elevation. April 1966 to September 1979, water-stage recorder at site about 500 ft downstream at different elevation.
11-04-2016 to 11-16-2017: records are good, except estimated records are poor.
10-19-2015 to 11-03-2016: records are good, except estimated records are poor.
10-08-2014 to 10-18-2015: records are good, except estimated records are poor. 
10-01-2013 to 10-07-2014: records are good, except estimated records are poor.  

Flow is regulated by Gibson, Pishkun, Willow Creek, and Nilan Reservoirs. Diversions for irrigation 
of about 105,000 acres occur upstream from station. 
WATER TEMPERATURE:  April 2007 to current year.
INSTRUMENTATION - Water temperature probe installed July 6, 2006 (data not published for water year 2006).
11-04-2016 to 11-16-2017: records are poor.
10-01-2015 to 11-03-2016: records are excellent.
10-01-2014 to 09-30-2015: records are excellent.
10-01-2013 to 09-30-2014: records are excellent.
WATER TEMPERATURE: Maximum, 28.5°C, July 19, 2007; minimum -0.3°C, Dec. 17, 2016. 
EXTREMES FOR CURRENT YEAR - WATER TEMPERATURE: Maximum, 26.5°C, Jul. 1; minimum, 0.0°C, many days Jan. to Mar.