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

Page Loading - Please Wait...

Click to hideNews Bulletins

Water-Year Summary for Site 12389000

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 2018: 2017-10-01 to 2018-09-30

Print this page
USGS Water-Year Summary 2018
LOCATION - Lat 47°25'45.12", long 114°51'23.52" referenced to North American Datum of 1983, in EH 1/4 SW 1/4 sec.01, T.19 N., R.26 W., Sanders County, MT, Hydrologic Unit 17010213, on right bank 2.4 mi southeast of Plains, 6.0 mi downstream from Flathead River, and at river mile 239.0. (Change EH 1/4 to E 1/2)
DRAINAGE AREA - 19,964 mi².
REVISIONS HISTORY - WSP 1246: Drainage area.
PERIOD OF RECORD - October 1910 to current year. Monthly discharge only for some periods, published in Water Supply Paper (WSP) 1316.
GAGE - Water-stage recorder. Elevation of gage is 2,449.11 ft, referenced to the National Geodetic Vertical Datum of 1929 (levels by U.S. Army Corps of Engineers). Prior to Nov. 28, 1911, nonrecording gage located at site 50 ft upstream at same elevation. U.S. Geological Survey satellite telemeter is located at the station.
10-18-2017 to 10-02-2018: records are good, except estimated records are fair. 
11-16-2016 to 10-17-2017: records are good, except estimated records are fair. 
10-30-2015 to 11-15-2016: records are good.
10-21-2014 to 10-29-2015: records are good, except estimated records are fair.
10-01-2013 to 10-20-2014: records are good. 

Flow is partly regulated by Hungry Horse Reservoir (station number 12362000) and by Flathead Lake 
(station number 12371500). Diversions for irrigation include about 335,000 acres upstream from