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Kootenai River in Idaho

River62.1 mi
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Around Kootenai River

Selkirk Crest Wilderness Study Area1.6 mi10 mi

Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US

About this river

Kootenai River is a 62.1 mile river. Streamflow is measured at the USGS gauge Kootenai River Bel Moyie River near Bonners Ferry ID (site 12308000). The National Hydrography Dataset places it at stream order 8. Reach geometry comes from the USGS National Hydrography Dataset.

Typical flow by month

2010 to 2026

Kootenai River typically runs highest in May, at a median 30,400 cfs, and lowest in October, at 4,980 cfs. The highest flow on record for any single day is 59,600 cfs, in 2012.

Show the numbers
Typical flow by month at Kootenai River Bel Moyie River near Bonners Ferry ID, in cfs
MonthTypical (cfs)Usual range (cfs)
January6,1405,280 to 13,200
February6,7905,230 to 13,600
March8,8505,990 to 17,700
April12,5509,270 to 27,350
May30,40025,700 to 34,900
June22,25013,800 to 32,150
July10,8009,740 to 17,400
August9,7607,830 to 13,000
September7,3906,820 to 9,065
October4,9804,710 to 5,360
November15,3008,885 to 21,950
December23,10016,700 to 27,000

Typical is the median of each month’s daily median values, and the usual range runs from the median 25th to the median 75th percentile, across about 16 years of record. Statistics published by the US Geological Survey for Kootenai River Bel Moyie River near Bonners Ferry ID (site 12308000). Conditions on any given day can fall well outside the usual range. Check the current reading before you go.

Boat access nearby

8 mapped launches sit in the mapped area of Kootenai River, all of them public access. Ramp data comes from the USGS national boat-ramp inventory.

  • Roosevelt Park - TroyKootenai River - Lake KoocanusaPublic
  • McArthur Lake Water Management AreaMcArthur LakePublic
  • Deep CreekKootenai RiverPublic
  • Bonner LakeBonner LakePublic
  • Smith LakeSmith LakePublic
  • Dawson LakeDawson LakePublic
  • Brush LakeBrush LakePublic
  • CopelandKootenai RiverPublic

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