USGS Water-Year Summary for Site 06026500

Click to hide Water-Year Summary instructions and information

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(Max.,Min.,Mean)
	00060 Discharge(Mean)

Select a water year

Water year 2024: 2024-10-01 to 2025-09-30

Print this page

USGS Water-Year Summary 2024

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 - Some regulation occurs by Clark Canyon, Lima and Ruby River Reservoirs. Numerous diversions for irrigation occur 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 -

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.