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Water-Year Summary for Site 06026500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Max.,Min.,Mean)  
00060 Discharge(Mean)  

Water year 2021: 2021-10-01 to 2022-09-30
 

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USGS Water-Year Summary 2021
06026500 JEFFERSON RIVER NEAR TWIN BRIDGES, MT
LOCATION - Lat 45°36'47.82", long 112°19'45.83" referenced to North American Datum of 1983, in NW 1/4 SW 1/4 SE 1/4 sec.34, T.2 S., R.6 W., Madison County, MT, Hydrologic Unit 10020005, on left bank 0.3 mi upstream from Hells Canyon Creek, 4.8 mi north of Twin Bridges, and at river mile 2,399.6.
DRAINAGE AREA - 7,616 mi².
REVISIONS HISTORY - The maximum discharge for water year 2017 was revised on Jan. 14, 2020, during a routine review of data. 
SURFACE-WATER RECORDS
PERIOD OF RECORD - August 1940 to September 1943, October 1957 to September 1972, May 1994 to current year.
GAGE - Water-stage recorder. Elevation of gage is 4,560 ft, referenced to the North American Vertical Datum of 1988. August 1940 to September 1943, nonrecording gage at site 180 ft upstream at different elevation. October 1957 to June 3, 1972, water-stage recorder at site 430 ft upstream, and June 4 to September 30, 1972, nonrecording gage 6.5 mi downstream, and at different elevations. May 1994 to March 15, 2010, water-stage recorder 680 ft upstream at different datum.
REMARKS -
03/17/2020 to 10/13/20: records are fair, except estimated/periods when the orifice was buried records are poor.
10/02/2019 to 03/17/2020: records are fair, except estimated records are poor.
10/03/2018 to 10/01/2019: records are fair, except estimated records are poor.
10/19/2017 to 10/02/2018: records are good, except estimated records are poor.
10/13/2016 to 10/19/2017: records are good, except estimated records are poor.
10/05/2015 to 10/12/2016: records are good, except estimated records are poor.
10/04/2014 to 10/04/2015: records are good, except estimated records are poor. 
10/01/2013 to 10/03/2014: records are good, except estimated records are poor. 

Some regulation occurs by Clark Canyon, Lima and Ruby River Reservoirs. Diversion for irrigation 
of about 310,000 acres occurs upstream from station. 
WATER-QUALITY RECORDS
PERIOD OF RECORD -
TURBIDITY: June 11, 2009 to September 30, 2010 (seasonal), 
WATER TEMPERATURE: July 1, 2012 to current year (seasonal).
PERIOD OF DAILY RECORD -
TURBIDITY: June 11, 2009 to September 30, 2010
WATER TEMPERATURE: July 2012 to current year (seasonal)
REMARKS -
WATER TEMPERATURE
07-01-2020 to 09-30-2020 (seasonal record): records are excellent
07-01-2019 to 09-30-2019 (seasonal record): records are good.
06-28-2018 to 10-03-2018 (seasonal record): records are good.
06-28-2017 to 10-06-2017 (seasonal record): records are good.
06-14-2016 to 10-12-2016 (seasonal record): records are good.
06-29-2015 to 10-05-2015 (seasonal record): records are excellent, except records for August 3 to 
October 5 are good.
07-01-2014 to 09-30-2014 (seasonal record): records are excellent. 
EXTREMES FOR PERIOD OF DAILY RECORD -
TURBIDITY: During seasonal operation, maximum, 69 formazin nephelometric units (FNU), June 4, 2010; 
minimum, 1.0 FNU, Sept. 19-23, 25, 27, 28, 2009.
WATER TEMPERATURE: During seasonal operation, maximum, 26.2°C July 1, 2015; minimum, 5.0°C October 12, 2016.