Warning: Javascript must be enabled to use all the features on this page!

Page Loading - Please Wait...

Click to hideNews Bulletins
  • The issue impacting the delivery of satellite data transmissions in the western United States has been resolved. Current data for impacted locations are now accessible from USGS web portals. The data to fill any resultant gaps in water records will be downloaded from field equipment for manual upload following the next scheduled field visit.
  • Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.
  • Full News RSS icon

Water-Year Summary for Site 12331800

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
00060 Discharge(Mean)  

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

Print this page
USGS Water-Year Summary 2020
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.
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.

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).
PERIOD OF RECORD - March 1993 to current year.
REMARKS - Several unpublished observations of specific conductance and water temperature were made during the year.