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Fisher River near Libby

Highest listed crest 10.35 ftFlood stage 7.5 ft22 crests since 1948

The Fisher River near Libby crested at major flood stage 1 time among the 22 crests the National Weather Service lists from 1948 to 2025. The highest, 10.35 ft on February 9, 1996, was major flooding, 2.85 feet above flood stage.

The gauge

Highest listed crest
10.35 ft
February 9, 1996; 12,000 cubic feet per second
Flood stage
7.5 ft
Major flooding from 10.0 ft
Crests at major
1
28th of 93 gauges in Montana
Most recent flood crest
December 11, 2025
7.67 ft, minor flooding
Location
Lincoln County
Montana

Flood stages

The thresholds the National Weather Service uses for this gauge today, and how many listed crests reached each.

Flood categories, Fisher River near Libby
Action stage7.03May 16, 2011The level at which the NWS or its partners begin to take action
Flood stage (minor)7.59Dec 11, 2025Minimal or no property damage, but possibly some public threat
Moderate flood stage8.53Apr 15, 2002Some inundation of structures and roads near the stream
Major flood stage10.01Feb 9, 1996Extensive inundation of structures and roads

Every listed crest

22 crests from 1948 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Fisher River near Libby, 1948 to 2025 4681012ft Flood stage 7.5 ftMajor 10.0 ft May 22, 1948: 8.30 ft, minor flooding; 6,560 cubic feet per secondApr 24, 1969: 7.54 ft, minor flooding; 4,730 cubic feet per secondMay 5, 1971: 7.57 ft, minor flooding; 4,620 cubic feet per secondMar 18, 1972: 7.75 ft, minor flooding; 4,980 cubic feet per secondJan 16, 1974: 9.29 ft, moderate flooding; 8,720 cubic feet per secondDec 5, 1975: 7.18 ft, action stage; 4,240 cubic feet per secondNov 12, 1989: 7.01 ft, action stage; 3,170 cubic feet per secondNov 25, 1990: 8.00 ft, minor flooding; 5,380 cubic feet per secondFeb 9, 1996: 10.35 ft, major flooding; 12,000 cubic feet per secondApr 28, 1997: 8.75 ft, moderate flooding; 7,010 cubic feet per secondMay 28, 1998: 6.54 ft, below flood stage; 2,530 cubic feet per secondApr 15, 2002: 8.54 ft, moderate flooding; 6,900 cubic feet per secondMay 19, 2008: 7.81 ft, minor flooding; 5,130 cubic feet per secondMay 16, 2011: 7.46 ft, action stage; 5,100 cubic feet per secondApr 25, 2012: 7.66 ft, minor flooding; 4,720 cubic feet per secondMar 16, 2015: 6.66 ft, below flood stage; 2,910 cubic feet per secondMar 19, 2017: 7.81 ft, minor flooding; 5,010 cubic feet per secondMay 31, 2020: 5.89 ft, below flood stage; 1,920 cubic feet per secondMay 25, 2021: 6.18 ft, below flood stage; 2,260 cubic feet per secondJun 16, 2022: 6.70 ft, below flood stage; 2,990 cubic feet per secondMar 28, 2025: 5.34 ft, below flood stage; 1,420 cubic feet per secondDec 11, 2025: 7.67 ft, minor flooding; 4,710 cubic feet per second Highest, 10.35 ft, Feb 9, 1996 19501960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Fisher River near Libby 1940s: 1 1950s: 0 1960s: 1 1970s: 3 3 1980s: 0 1990s: 3 2000s: 2 2010s: 2 2020s: 1 1940s1950s1960s1970s1980s1990s2000s2010s2020s
  1. These are the crests the local National Weather Service office lists for the gauge: the highest on record and recent crests. Lesser floods between them may be missing, so counts by decade are a floor.
  2. Categories use today's flood stages. Levees, dams and channel changes since a crest can make old and new stages not directly comparable.

Highest crests

Highest listed crests, Fisher River near Libby
1Feb 9, 199610.35+2.85Major12,000
2Jan 16, 19749.29+1.79Moderate8,720
3Apr 28, 19978.75+1.25Moderate7,010
4Apr 15, 20028.54+1.04Moderate6,900
5May 22, 19488.30+0.80Minor6,560
6Nov 25, 19908.00+0.50Minor5,380
7May 19, 20087.81+0.31Minor5,130
8Mar 19, 20177.81+0.31Minor5,010
9Mar 18, 19727.75+0.25Minor4,980
10Dec 11, 20257.67+0.17Minor4,710
11Apr 25, 20127.66+0.16Minor4,720
12May 5, 19717.57+0.07Minor4,620
13Apr 24, 19697.54+0.04Minor4,730
14May 16, 20117.46−0.04Action5,100
15Dec 5, 19757.18−0.32Action4,240
16Nov 12, 19897.01−0.49Action3,170
17Jun 16, 20226.70−0.80Below flood stage2,990
18Mar 16, 20156.66−0.84Below flood stage2,910
19May 28, 19986.54−0.96Below flood stage2,530
20May 25, 20216.18−1.32Below flood stage2,260
21May 31, 20205.89−1.61Below flood stage1,920
22Mar 28, 20255.34−2.16Below flood stage1,420

Other gauges in Lincoln County

Flood gauges in Lincoln County
Libby Dam near Libby27.528.50 ft, Jun 18, 20060
Troy8.011.10 ft, May 27, 19481

Lincoln County: every hazard · River floods across the country · Montana

NOAA National Water Prediction Service, gauge FISM8, retrieved October 30, 2026. Stages in feet on the gauge's own datum, not elevation. Crests are as the National Weather Service lists them; preliminary values may be revised.