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Gallatin River at Logan

Highest listed crest 11.88 ftFlood stage 9.0 ft120 crests since 1929

The Gallatin River at Logan crested at major flood stage 2 times among the 120 crests the National Weather Service lists from 1929 to 2022. The highest, 11.88 ft on February 5, 1963, was major flooding, 2.88 feet above flood stage.

The gauge

Highest listed crest
11.88 ft
February 5, 1963
Flood stage
9.0 ft
Major flooding from 11.0 ft
Crests at major
2
20th of 93 gauges in Montana
Most recent flood crest
June 14, 2022
9.75 ft, minor flooding
Location
Gallatin County
Near Belgrade (14.6 mi)

Flood stages

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

Flood categories, Gallatin River at Logan
Action stage8.029Feb 10, 2019The level at which the NWS or its partners begin to take action
Flood stage (minor)9.018Jun 14, 2022Minimal or no property damage, but possibly some public threat
Moderate flood stage10.05Feb 28, 2019Some inundation of structures and roads near the stream
Major flood stage11.02Feb 17, 1969Extensive inundation of structures and roads

Every listed crest

120 crests from 1929 to 2022. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Gallatin River at Logan, 1929 to 2022 24681012ft Flood stage 9.0 ftMajor 11.0 ft Jun 17, 1929: 6.60 ft, below flood stage; 4,970 cubic feet per secondMay 31, 1930: 5.36 ft, below flood stage; 2,820 cubic feet per secondJun 3, 1931: 5.46 ft, below flood stage; 2,970 cubic feet per secondJun 16, 1932: 6.42 ft, below flood stage; 4,570 cubic feet per secondJun 13, 1933: 5.94 ft, below flood stage; 3,700 cubic feet per secondJun 14, 1935: 6.10 ft, below flood stage; 3,990 cubic feet per secondMay 15, 1936: 6.30 ft, below flood stage; 4,370 cubic feet per secondJun 17, 1937: 5.95 ft, below flood stage; 3,650 cubic feet per secondMay 30, 1938: 6.90 ft, below flood stage; 5,590 cubic feet per secondMay 6, 1939: 5.40 ft, below flood stage; 2,790 cubic feet per secondJun 14, 1940: 5.92 ft, below flood stage; 3,500 cubic feet per secondJun 6, 1941: 4.80 ft, below flood stage; 1,990 cubic feet per secondJan 3, 1942: 7.23 ft, below flood stageJun 9, 1942: 7.10 ft, below flood stage; 5,940 cubic feet per secondFeb 10, 1943: 8.94 ft, action stageJun 27, 1944: 6.68 ft, below flood stage; 4,820 cubic feet per secondDec 27, 1944: 7.30 ft, below flood stageJun 24, 1945: 5.83 ft, below flood stage; 3,500 cubic feet per secondJun 6, 1946: 6.04 ft, below flood stage; 3,730 cubic feet per secondJun 21, 1947: 7.46 ft, below flood stage; 6,160 cubic feet per secondJun 5, 1948: 8.40 ft, action stage; 7,870 cubic feet per secondDec 25, 1948: 7.23 ft, below flood stageMay 18, 1949: 6.26 ft, below flood stage; 3,900 cubic feet per secondJun 22, 1950: 6.29 ft, below flood stage; 3,940 cubic feet per secondMay 25, 1951: 6.41 ft, below flood stage; 4,140 cubic feet per secondJan 24, 1952: 7.94 ft, below flood stageJun 7, 1952: 7.78 ft, below flood stage; 6,640 cubic feet per secondJun 14, 1953: 7.34 ft, below flood stage; 5,930 cubic feet per secondJan 23, 1954: 7.18 ft, below flood stageJun 28, 1954: 5.74 ft, below flood stage; 3,380 cubic feet per secondJan 7, 1955: 7.48 ft, below flood stageJun 16, 1955: 6.18 ft, below flood stage; 4,050 cubic feet per secondDec 19, 1955: 8.83 ft, action stageMay 29, 1956: 7.97 ft, below flood stage; 7,190 cubic feet per secondFeb 5, 1957: 7.29 ft, below flood stageJun 9, 1957: 6.79 ft, below flood stage; 4,990 cubic feet per secondMay 26, 1958: 5.90 ft, below flood stage; 3,620 cubic feet per secondJun 15, 1959: 7.65 ft, below flood stage; 6,120 cubic feet per secondJan 17, 1960: 8.83 ft, action stageMay 13, 1960: 6.34 ft, below flood stage; 4,320 cubic feet per secondMay 30, 1961: 4.88 ft, below flood stage; 2,160 cubic feet per secondDec 11, 1961: 8.50 ft, action stageJun 15, 1962: 6.64 ft, below flood stage; 4,830 cubic feet per secondFeb 5, 1963: 11.88 ft, major floodingJun 15, 1963: 6.56 ft, below flood stage; 4,750 cubic feet per secondJun 13, 1965: 7.54 ft, below flood stage; 6,040 cubic feet per secondFeb 1, 1968: 9.80 ft, minor floodingJun 14, 1968: 7.97 ft, below flood stage; 7,280 cubic feet per secondFeb 17, 1969: 11.85 ft, major floodingJun 11, 1969: 7.18 ft, below flood stage; 5,200 cubic feet per secondJun 10, 1970: 9.03 ft, minor flooding; 9,390 cubic feet per secondJan 7, 1971: 9.30 ft, minor floodingJun 28, 1971: 8.74 ft, action stage; 8,480 cubic feet per secondDec 28, 1971: 9.03 ft, minor floodingJun 8, 1972: 7.13 ft, below flood stage; 5,130 cubic feet per secondFeb 10, 1973: 8.55 ft, action stageJun 10, 1973: 7.41 ft, below flood stage; 5,550 cubic feet per secondJan 16, 1974: 9.90 ft, minor floodingJun 18, 1974: 9.02 ft, minor flooding; 9,170 cubic feet per secondJan 29, 1975: 10.63 ft, moderate floodingJul 4, 1975: 8.44 ft, action stage; 7,770 cubic feet per secondJun 23, 1976: 7.93 ft, below flood stage; 6,660 cubic feet per secondJun 11, 1977: 5.57 ft, below flood stage; 2,620 cubic feet per secondJan 3, 1978: 7.15 ft, below flood stageJun 10, 1978: 7.05 ft, below flood stage; 4,970 cubic feet per secondJan 3, 1979: 9.38 ft, minor floodingJan 1, 1980: 10.32 ft, moderate floodingMay 25, 1980: 6.87 ft, below flood stage; 4,550 cubic feet per secondMay 23, 1981: 8.47 ft, action stage; 7,380 cubic feet per secondJan 23, 1982: 9.54 ft, minor floodingJun 29, 1982: 8.16 ft, action stage; 7,160 cubic feet per secondJun 12, 1983: 7.89 ft, below flood stage; 6,390 cubic feet per secondDec 21, 1983: 9.87 ft, minor floodingMay 16, 1984: 8.12 ft, action stage; 7,050 cubic feet per secondFeb 4, 1985: 9.16 ft, minor floodingMay 4, 1985: 6.61 ft, below flood stage; 3,710 cubic feet per secondNov 26, 1985: 8.06 ft, action stageMay 29, 1987: 5.59 ft, below flood stage; 2,100 cubic feet per secondMay 17, 1988: 6.96 ft, below flood stage; 3,980 cubic feet per secondJun 17, 1989: 6.69 ft, below flood stage; 3,740 cubic feet per secondJun 11, 1990: 7.30 ft, below flood stage; 4,370 cubic feet per secondJun 6, 1991: 9.06 ft, minor flooding; 8,120 cubic feet per secondJun 18, 1992: 7.33 ft, below flood stage; 4,310 cubic feet per secondJan 1, 1993: 8.67 ft, action stageMay 22, 1993: 8.30 ft, action stage; 6,410 cubic feet per secondNov 26, 1993: 10.18 ft, moderate floodingMay 13, 1994: 6.64 ft, below flood stage; 3,410 cubic feet per secondJun 6, 1995: 8.67 ft, action stage; 7,220 cubic feet per secondFeb 9, 1996: 10.18 ft, moderate floodingJun 10, 1996: 8.71 ft, action stage; 7,310 cubic feet per secondDec 27, 1996: 9.87 ft, minor floodingJun 8, 1997: 9.80 ft, minor flooding; 9,400 cubic feet per secondJun 26, 1998: 8.30 ft, action stage; 6,270 cubic feet per secondMay 30, 1999: 8.11 ft, action stage; 5,600 cubic feet per secondMay 29, 2000: 7.10 ft, below flood stage; 3,930 cubic feet per secondJan 29, 2001: 9.64 ft, minor floodingMay 15, 2001: 6.26 ft, below flood stage; 2,610 cubic feet per secondJun 3, 2002: 8.11 ft, action stage; 5,580 cubic feet per secondMay 30, 2003: 8.24 ft, action stage; 5,830 cubic feet per secondJan 8, 2004: 7.40 ft, below flood stageJun 11, 2004: 7.02 ft, below flood stage; 3,700 cubic feet per secondJan 7, 2005: 8.47 ft, action stageJun 18, 2005: 7.14 ft, below flood stage; 4,050 cubic feet per secondDec 20, 2005: 8.20 ft, action stageJun 10, 2006: 7.68 ft, below flood stage; 5,010 cubic feet per secondFeb 3, 2007: 7.22 ft, below flood stageJun 7, 2007: 3.49 ft, below flood stage; 3,720 cubic feet per secondJun 23, 2008: 8.59 ft, action stage; 6,270 cubic feet per secondJun 1, 2009: 8.09 ft, action stage; 5,580 cubic feet per secondJun 5, 2010: 8.52 ft, action stage; 6,110 cubic feet per secondJan 2, 2011: 9.57 ft, minor floodingJun 30, 2011: 9.35 ft, minor flooding; 7,980 cubic feet per secondJun 5, 2012: 8.05 ft, action stage; 4,990 cubic feet per secondJan 13, 2013: 8.92 ft, action stageJun 14, 2013: 7.46 ft, below flood stage; 4,010 cubic feet per secondMay 29, 2014: 8.87 ft, action stage; 6,650 cubic feet per secondJun 2, 2018: 9.15 ft, minor flooding; 7,274 cubic feet per secondFeb 10, 2019: 8.70 ft, action stage; 6,410 cubic feet per secondFeb 28, 2019: 10.87 ft, moderate flooding; 11,400 cubic feet per secondJun 14, 2022: 9.75 ft, minor flooding; 8,920 cubic feet per second Highest, 11.88 ft, Feb 5, 1963 19401960198020002020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Gallatin River at Logan 1920s: 0 1930s: 0 1940s: 0 1950s: 0 1960s: 3 1970s: 7 7 1980s: 4 1990s: 5 2000s: 1 2010s: 4 2020s: 1 1920s1930s1940s1950s1960s1970s1980s1990s2000s2010s2020s
  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.
  3. 2 crests measured on an earlier gauge datum are left out: 7.50 ft on Jun 20, 1943; 6.25 ft on Jun 21, 1999.

Highest crests

The 50 highest of 120 listed crests.

Highest listed crests, Gallatin River at Logan
1Feb 5, 196311.88+2.88Major—
2Feb 17, 196911.85+2.85Major—
3Feb 28, 201910.87+1.87Moderate11,400
4Jan 29, 197510.63+1.63Moderate—
5Jan 1, 198010.32+1.32Moderate—
6Nov 26, 199310.18+1.18Moderate—
7Feb 9, 199610.18+1.18Moderate—
8Jan 16, 19749.90+0.90Minor—
9Dec 21, 19839.87+0.87Minor—
10Dec 27, 19969.87+0.87Minor—
11Feb 1, 19689.80+0.80Minor—
12Jun 8, 19979.80+0.80Minor9,400
13Jun 14, 20229.75+0.75Minor8,920
14Jan 29, 20019.64+0.64Minor—
15Jan 2, 20119.57+0.57Minor—
16Jan 23, 19829.54+0.54Minor—
17Jan 3, 19799.38+0.38Minor—
18Jun 30, 20119.35+0.35Minor7,980
19Jan 7, 19719.30+0.30Minor—
20Feb 4, 19859.16+0.16Minor—
21Jun 2, 20189.15+0.15Minor7,274
22Jun 6, 19919.06+0.06Minor8,120
23Jun 10, 19709.03+0.03Minor9,390
24Dec 28, 19719.03+0.03Minor—
25Jun 18, 19749.02+0.02Minor9,170
26Feb 10, 19438.94−0.06Action—
27Jan 13, 20138.92−0.08Action—
28May 29, 20148.87−0.13Action6,650
29Dec 19, 19558.83−0.17Action—
30Jan 17, 19608.83−0.17Action—
31Jun 28, 19718.74−0.26Action8,480
32Jun 10, 19968.71−0.29Action7,310
33Feb 10, 20198.70−0.30Action6,410
34Jan 1, 19938.67−0.33Action—
35Jun 6, 19958.67−0.33Action7,220
36Jun 23, 20088.59−0.41Action6,270
37Feb 10, 19738.55−0.45Action—
38Jun 5, 20108.52−0.48Action6,110
39Dec 11, 19618.50−0.50Action—
40May 23, 19818.47−0.53Action7,380
41Jan 7, 20058.47−0.53Action—
42Jul 4, 19758.44−0.56Action7,770
43Jun 5, 19488.40−0.60Action7,870
44May 22, 19938.30−0.70Action6,410
45Jun 26, 19988.30−0.70Action6,270
46May 30, 20038.24−0.76Action5,830
47Dec 20, 20058.20−0.80Action—
48Jun 29, 19828.16−0.84Action7,160
49May 16, 19848.12−0.88Action7,050
50May 30, 19998.11−0.89Action5,600

Gauges on the Gallatin River

In USGS station-number order, which runs downstream within a river basin.

Flood gauges on the Gallatin River
Gallatin GatewayMT6.07.38 ft, Jun 17, 19740
Logan this gaugeMT9.011.88 ft, Feb 5, 19632

Other gauges in Gallatin County

Flood gauges in Gallatin County
Bridger Creek near Bozeman4.55.60 ft, Jun 11, 20040
Gallatin Gateway6.07.38 ft, Jun 17, 19740

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

NOAA National Water Prediction Service, gauge LOGM8, 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.