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Mendenhall River near Auke Bay

Highest listed crest 16.65 ftFlood stage 9.0 ft69 crests since 1966

The Mendenhall River near Auke Bay crested at major flood stage 4 times among the 69 crests the National Weather Service lists from 1966 to 2026. The highest, 16.65 ft on August 13, 2025, was major flooding, 7.65 feet above flood stage.

The gauge

Highest listed crest
16.65 ft
August 13, 2025; 48,900 cubic feet per second
Flood stage
9.0 ft
Major flooding from 14.0 ft
Crests at major
4
2nd of 110 gauges in Alaska
Most recent flood crest
October 2, 2026
10.18 ft, moderate flooding
Location
Juneau City and Borough
Near Juneau (14.8 mi)

Flood stages

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

Flood categories, Mendenhall River near Auke Bay
Action stage8.022Oct 1, 2022The level at which the NWS or its partners begin to take action
Flood stage (minor)9.014Sep 15, 2025Minimal or no property damage, but possibly some public threat
Moderate flood stage10.017Oct 2, 2026Some inundation of structures and roads near the stream
Major flood stage14.04Aug 13, 2026Extensive inundation of structures and roads

Every listed crest

69 crests from 1966 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Mendenhall River near Auke Bay, 1966 to 2026 681012141618ft Flood stage 9.0 ftMajor 14.0 ft Aug 24, 1966: 8.94 ft, action stage; 8,900 cubic feet per secondSep 15, 1967: 8.43 ft, action stage; 9,020 cubic feet per secondSep 7, 1968: 8.14 ft, action stage; 7,580 cubic feet per secondSep 29, 1970: 8.91 ft, action stage; 8,860 cubic feet per secondAug 3, 1971: 7.35 ft, below flood stage; 5,610 cubic feet per secondSep 15, 1972: 8.42 ft, action stage; 7,900 cubic feet per secondSep 14, 1974: 8.51 ft, action stage; 8,400 cubic feet per secondSep 14, 1975: 7.43 ft, below flood stage; 6,720 cubic feet per secondSep 28, 1976: 8.67 ft, action stage; 9,820 cubic feet per secondAug 9, 1978: 6.81 ft, below flood stage; 5,100 cubic feet per secondJul 31, 1980: 8.77 ft, action stage; 9,790 cubic feet per secondSep 8, 1981: 10.91 ft, moderate flooding; 15,500 cubic feet per secondSep 3, 1982: 7.96 ft, below flood stage; 7,840 cubic feet per secondAug 22, 1983: 9.40 ft, minor flooding; 10,800 cubic feet per secondAug 26, 1984: 8.80 ft, action stage; 9,250 cubic feet per secondSep 26, 1985: 6.19 ft, below flood stage; 3,990 cubic feet per secondAug 13, 1986: 7.33 ft, below flood stage; 5,990 cubic feet per secondOct 2, 1987: 9.18 ft, minor flooding; 10,200 cubic feet per secondSep 23, 1989: 7.75 ft, below flood stage; 6,890 cubic feet per secondSep 24, 1990: 9.75 ft, minor flooding; 11,800 cubic feet per secondSep 6, 1991: 8.60 ft, action stage; 8,760 cubic feet per secondAug 18, 1992: 8.48 ft, action stage; 8,480 cubic feet per secondSep 22, 1993: 10.18 ft, moderate flooding; 13,000 cubic feet per secondSep 22, 1994: 9.13 ft, minor flooding; 10,100 cubic feet per secondSep 11, 1995: 11.18 ft, moderate flooding; 16,000 cubic feet per secondSep 26, 1996: 7.88 ft, below flood stage; 7,160 cubic feet per secondAug 14, 1997: 8.78 ft, action stage; 9,200 cubic feet per secondSep 1, 1998: 6.96 ft, below flood stage; 5,640 cubic feet per secondOct 20, 1998: 9.69 ft, minor flooding; 12,400 cubic feet per secondAug 22, 2000: 8.07 ft, action stage; 8,020 cubic feet per secondSep 15, 2001: 7.33 ft, below flood stage; 6,380 cubic feet per secondAug 13, 2002: 8.97 ft, action stage; 10,300 cubic feet per secondOct 22, 2002: 9.23 ft, minor flooding; 11,000 cubic feet per secondJul 29, 2004: 8.63 ft, action stage; 9,410 cubic feet per secondSep 8, 2005: 7.74 ft, below flood stage; 7,260 cubic feet per secondSep 1, 2006: 9.76 ft, minor flooding; 12,600 cubic feet per secondJul 13, 2007: 8.75 ft, action stage; 9,730 cubic feet per secondSep 17, 2008: 8.33 ft, action stage; 8,670 cubic feet per secondAug 18, 2009: 10.32 ft, moderate flooding; 14,400 cubic feet per secondAug 19, 2010: 7.39 ft, below flood stage; 6,520 cubic feet per secondJul 21, 2011: 10.90 ft, moderate flooding; 13,500 cubic feet per secondAug 23, 2011: 10.26 ft, moderate flooding; 14,100 cubic feet per secondJul 6, 2012: 8.36 ft, action stage; 8,720 cubic feet per secondSep 8, 2013: 8.46 ft, action stage; 8,990 cubic feet per secondJul 11, 2014: 11.85 ft, moderate flooding; 15,900 cubic feet per secondAug 12, 2014: 10.87 ft, moderate flooding; 16,300 cubic feet per secondAug 21, 2015: 9.20 ft, minor flooding; 9,710 cubic feet per secondJul 1, 2016: 11.99 ft, moderate flooding; 16,300 cubic feet per secondAug 15, 2016: 9.01 ft, minor flooding; 9,320 cubic feet per secondSep 10, 2016: 9.46 ft, minor flooding; 10,300 cubic feet per secondSep 15, 2016: 9.11 ft, minor flooding; 9,520 cubic feet per secondSep 1, 2017: 8.77 ft, action stage; 8,840 cubic feet per secondJul 19, 2018: 10.92 ft, moderate flooding; 13,600 cubic feet per secondAug 9, 2018: 10.42 ft, moderate flooding; 12,400 cubic feet per secondSep 21, 2019: 9.29 ft, minor flooding; 9,800 cubic feet per secondAug 1, 2020: 11.55 ft, moderate flooding; 15,200 cubic feet per secondAug 10, 2020: 10.19 ft, moderate flooding; 11,900 cubic feet per secondAug 14, 2021: 11.56 ft, moderate flooding; 15,200 cubic feet per secondJul 8, 2022: 8.67 ft, action stage; 10,000 cubic feet per secondOct 1, 2022: 8.99 ft, action stage; 10,500 cubic feet per secondOct 27, 2022: 10.33 ft, moderate flooding; 12,400 cubic feet per secondAug 5, 2023: 14.97 ft, major flooding; 34,200 cubic feet per secondOct 8, 2023: 9.22 ft, minor flooding; 9,770 cubic feet per secondAug 6, 2024: 15.99 ft, major flooding; 42,700 cubic feet per secondOct 20, 2024: 10.77 ft, moderate flooding; 13,300 cubic feet per secondAug 13, 2025: 16.65 ft, major flooding; 48,900 cubic feet per secondSep 15, 2025: 9.63 ft, minor flooding; 12,600 cubic feet per secondAug 13, 2026: 14.71 ft, major flooding; 32,100 cubic feet per secondOct 2, 2026: 10.18 ft, moderate flooding; 14,200 cubic feet per second Highest, 16.65 ft, Aug 13, 2025 197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Mendenhall River near Auke Bay 1960s: 0 1970s: 0 1980s: 3 1990s: 5 2000s: 3 2010s: 12 12 2020s: 12 1960s1970s1980s1990s2000s2010s2020s
  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

The 50 highest of 69 listed crests.

Highest listed crests, Mendenhall River near Auke Bay
1Aug 13, 202516.65+7.65Major48,900
2Aug 6, 202415.99+6.99Major42,700
3Aug 5, 202314.97+5.97Major34,200
4Aug 13, 202614.71+5.71Major32,100
5Jul 1, 201611.99+2.99Moderate16,300
6Jul 11, 201411.85+2.85Moderate15,900
7Aug 14, 202111.56+2.56Moderate15,200
8Aug 1, 202011.55+2.55Moderate15,200
9Sep 11, 199511.18+2.18Moderate16,000
10Jul 19, 201810.92+1.92Moderate13,600
11Sep 8, 198110.91+1.91Moderate15,500
12Jul 21, 201110.90+1.90Moderate13,500
13Aug 12, 201410.87+1.87Moderate16,300
14Oct 20, 202410.77+1.77Moderate13,300
15Aug 9, 201810.42+1.42Moderate12,400
16Oct 27, 202210.33+1.33Moderate12,400
17Aug 18, 200910.32+1.32Moderate14,400
18Aug 23, 201110.26+1.26Moderate14,100
19Aug 10, 202010.19+1.19Moderate11,900
20Sep 22, 199310.18+1.18Moderate13,000
21Oct 2, 202610.18+1.18Moderate14,200
22Sep 1, 20069.76+0.76Minor12,600
23Sep 24, 19909.75+0.75Minor11,800
24Oct 20, 19989.69+0.69Minor12,400
25Sep 15, 20259.63+0.63Minor12,600
26Sep 10, 20169.46+0.46Minor10,300
27Aug 22, 19839.40+0.40Minor10,800
28Sep 21, 20199.29+0.29Minor9,800
29Oct 22, 20029.23+0.23Minor11,000
30Oct 8, 20239.22+0.22Minor9,770
31Aug 21, 20159.20+0.20Minor9,710
32Oct 2, 19879.18+0.18Minor10,200
33Sep 22, 19949.13+0.13Minor10,100
34Sep 15, 20169.11+0.11Minor9,520
35Aug 15, 20169.01+0.01Minor9,320
36Oct 1, 20228.99−0.01Action10,500
37Aug 13, 20028.97−0.03Action10,300
38Aug 24, 19668.94−0.06Action8,900
39Sep 29, 19708.91−0.09Action8,860
40Aug 26, 19848.80−0.20Action9,250
41Aug 14, 19978.78−0.22Action9,200
42Jul 31, 19808.77−0.23Action9,790
43Sep 1, 20178.77−0.23Action8,840
44Jul 13, 20078.75−0.25Action9,730
45Sep 28, 19768.67−0.33Action9,820
46Jul 8, 20228.67−0.33Action10,000
47Jul 29, 20048.63−0.37Action9,410
48Sep 6, 19918.60−0.40Action8,760
49Sep 14, 19748.51−0.49Action8,400
50Aug 18, 19928.48−0.52Action8,480

Other gauges in Juneau City and Borough

Flood gauges in Juneau City and Borough
Antler Lake near Auke Bay33.534.33 ft, Aug 13, 20210
Auke Lake near Auke Bay33.033.84 ft, Aug 13, 20210
Juneau9.711.20 ft, Dec 2, 20200
Mendenhall Loop Road Bridge near Auke Bay14.517.36 ft, Oct 20, 19980
Juneau43.045.54 ft, Jun 30, 20210

Juneau City and Borough: every hazard · River floods across the country · Alaska

NOAA National Water Prediction Service, gauge MNDA2, 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.