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Water-Year Summary for Site 12331800

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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.
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Available Parameters
00060 Discharge(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2020
12331800 CLARK FORK NEAR DRUMMOND, MT
LOCATION - Lat 46°42'42.89", long 113°19'50.81" referenced to North American Datum of 1983, in NE 1/4 SW 1/4 NW 1/4 sec.14, T.11 N., R.14 W., Granite County, MT, Hydrologic Unit 17010202, on right bank 50 ft upstream from country road bridge, 0.3 mi north of Bearmouth, 4.5 mi east of Bearmouth Chalet, 9.0 mi northwest of Drummond, and at river mile 403.9.
DRAINAGE AREA - 2,516 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 1993 to current year.
GAGE - Water-stage recorder. Elevation of gage is 3,810 ft, referenced to the National Geodetic Vertical Datum of 1988.
REMARKS -

11-19-2019 to 10-20-2020: records are good, except estimated records are poor.
12-03-2018 to 11-18-2019: records are good, except estimated records are poor. 
10-30-2017 to 12-02-2018: records are good, except estimated records are poor. 
11-29-2016 to 10-29-2017: records are good.
10-13-2015 to 11-28-2016: records are fair, except estimated records are poor.
10-01-2014 to 10-12-2015: records are fair.
08-01-2014 to 09-30-2014: records are fair.  
10-01-2013 to 07-31-2014: records are good. 

Some regulation occurs by settling ponds on Silver Bow Creek near Anaconda and Georgetown Lake 
(station number 12325000) on Flint Creek. Diversions for irrigation include about 88,000 acres 
upstream from station. 

 

EXTREMES OUTSIDE PERIOD OF RECORD - Flood of May 23, 1981 recorded a discharge of about 16,000 ft³/s, from measurements made upstream at Clark Fork at Drummond (12331600) and at downstream site, Clark Fork at Clinton (12331900).
WATER-QUALITY RECORDS
PERIOD OF RECORD - March 1993 to current year.
REMARKS - Several unpublished observations of specific conductance and water temperature were made during the year.