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Peak Streamflow for the Nation

USGS 12388700 Flathead River at Perma MT

Sanders County, Montana
Hydrologic Unit Code 17010212
Latitude  47°22'00.45", Longitude 114°35'06.00" NAD83
Drainage area 9,024  square miles
Contributing drainage area 9,004  square miles
Gage datum 2,469.3 feet above NGVD29
Output formats
Table
Graph
Tab-separated file
peakfq (watstore) format
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Water
Year		 Date Gage
Height
(feet)		 Stream-
flow
(cfs)
1984 1984-06-29 17.832 37,9005
1985 1985-05-31 16.662 33,2005
1986 1986-06-04 18.502 40,7005
1987 1987-05-16 13.58 22,0005
1988 1988-06-10 11.132 14,5005
1989 1989-06-14 16.19 31,8005
1990 1990-06-25 18.88 40,7005
1991 1991-07-03 18.97 44,6005
1992 1992-06-20 11.08 14,4005
1993 1993-07-10 16.952 34,7005
1994 1994-06-01 11.112 14,5005
1995 1995-06-10 20.09 47,4005
1996 1996-06-14 19.782 46,3005
1997 1997-06-07 21.65 54,7005
1998 1998-06-20 18.15 39,5005
1999 1999-06-28 17.15 35,5005
2000 2000-06-18 15.71 30,0005
2001 2001-06-30 11.192 14,3005
2002 2002-06-09 20.04 47,4005
2003 2003-06-04 15.37 27,5005
2004 2004-06-01 14.05 22,8005
2005 2005-06-07 20.17 48,0005
2006 2006-06-19 20.15 47,9005
2007 2007-06-07 16.692 33,7005
2008 2008-07-03 18.71 41,8005
2009 2009-06-24 14.122 24,4005
2010 2010-06-18 17.31 36,1005
2011 2011-06-26 21.44 53,7005
2012 2012-06-28 21.10 54,9005
2013 2013-05-28 17.25 38,1005
2014 2014-06-21 20.16 49,5005
2015 2015-06-11 13.72 24,8005
2016 2016-05-30 15.33 30,5005
2017 2017-06-04 19.52 46,1005
2018 2018-05-28 20.96 52,0005
2019 2019-05-19 14.652 27,5005
2020 2020-06-08 19.13 44,4005
2021 2021-06-01 15.392 30,0005
2022 2022-06-25 21.61 55,4005
2023 2023-05-15 14.532,5 26,6005
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  Peak Gage-Height Qualification Codes.
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  Peak Streamflow Qualification Codes.