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Water-Year Summary for Site 12323800

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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 46°12'29.67", long 112°46'02.46" referenced to North American Datum of 1983, in NE 1/4 NE 1/4 NE 1/4 sec.07, T.5 N., R.9 W., Deer Lodge County, MT, Hydrologic Unit 17010201, on right bank at upstream side of bridge on county road, 2.6 mi downstream from Silver Bow Creek and Warm Springs Creek, 2 mi south of Galen, and at river mile 482.7.
DRAINAGE AREA - 656 mi².  
REVISIONS HISTORY - WDR MT-2001: Drainage area. Discharge data for the period Dec. 5, 2016 to Feb. 5, 2017 were revised on Mar. 6, 2019  based upon hydrographic comparison with sum of two upstream sites.
PERIOD OF RECORD - July 1988 to current year.
GAGE - Water-stage recorder. Elevation of gage is 4,749.24 ft, referenced to the National Geodetic Vertical Datum of 1929.
10-25-2017 to 10-18-2018: records are good, except estimated records are poor.
11-30-2016 to 10-25-2017: records are good, except estimated records are poor.
10-06-2015 to 11-29-2016: records are good, except estimated records are poor.
10-22-2014 to 10-06-2015: records are good, except estimated records are poor.
10-01-2013 to 10-21-2014: records are good, except estimated records are poor. 

Some regulation occurs by Storm and Silver Lakes and settling ponds on Silver Bow Creek near Warm 
Springs. Numerous diversions occur upstream from station. 
PERIOD OF RECORD - Water years 1971-74, 1988 to current year.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: October 1991 to September 1998, October 2000 to September 2002.
REMARKS - Sampling conducted since 1988 as part of EPA Superfund program. Several unpublished observations of specific conductance and water temperature were made during the year.
EXTREMES FOR PERIOD OF DAILY RECORD - WATER TEMPERATURE: Maximum, 25.5°C, June 23, 1991; minimum, 0.0°C, on many days during winter period.