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Water-Year Summary for Site 12381400

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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.
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Available Parameters
00060 Discharge(Mean)  

Water year 2021: 2021-10-01 to 2022-09-30
 

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USGS Water-Year Summary 2021
12381400 SOUTH FORK JOCKO RIVER NEAR ARLEE, MT
LOCATION - Lat 47°11'43.98", long 113°51'02.65" referenced to North American Datum of 1983, in NE 1/4 NW 1/4 NE 1/4 sec.35, T.17 N., R.18 W., Lake County, MT, Hydrologic Unit 17010212, Flathead Indian Reservation, on right bank 600 ft upstream from confluence with Jocko River and Twin Campground and 12 mi northeast of Arlee, MT.
DRAINAGE AREA - 57.6 mi².  
REVISIONS HISTORY - WDR MT-2013: Drainage area. Maximum gage height for water years 2009 and 2015 were revised on July 1, 2021, based upon reanalysis of gage height record. 
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1982 to current year. Records published as "near Jocko" 1912-16 and in Water Supply Paper 1246 and 1316 are not equivalent.
GAGE - Water-stage recorder. Elevation of gage is 3,970 ft, referenced to the North American Vertical Datum of 1988. U.S. Geological Survey telemeter is located at the station.
REMARKS -
01/31/2020 to 10/06/2020: records are good, except estimated records are poor.
10/04/2019 to 01/30/2020: records are good, except estimated records are poor.
11/09/2018 to 10/03/2019: records are good, except estimated records are poor.
10/19/2017 to 11/08/2018: records are good, except estimated records are poor.
11/19/2016 to 10/18/2017: records are good, except estimated records are poor.
11/10/2015 to 11/18/2016: records are good, except estimated records are poor.
12/08/2014 to 11/09/2015: records are good, except estimated records are poor. 
10/01/2013 to 12/07/2014: records are good, except estimated records are poor. 

No known regulation or diversion occurs upstream from station.