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Tanana River at Nenana

Highest listed crest 18.50 ftFlood stage 12.5 ft72 crests since 1948

The Tanana River at Nenana crested at major flood stage 1 time among the 72 crests the National Weather Service lists from 1948 to 2025. The highest, 18.50 ft on August 18, 1967, was major flooding, 6.00 feet above flood stage. 1 other gauge on the Tanana River crested above flood stage within a week of it, 1 at its own highest listed crest.

The gauge

Highest listed crest
18.50 ft
August 18, 1967; 186,000 cubic feet per second
Flood stage
12.5 ft
Major flooding from 16.0 ft
Crests at major
1
18th of 110 gauges in Alaska
Most recent flood crest
August 31, 2023
12.63 ft, minor flooding

Flood stages

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

Flood categories, Tanana River at Nenana
Action stage11.023Aug 31, 2025The level at which the NWS or its partners begin to take action
Flood stage (minor)12.514Aug 31, 2023Minimal or no property damage, but possibly some public threat
Moderate flood stage14.52Aug 2, 2008Some inundation of structures and roads near the stream
Major flood stage16.01Aug 18, 1967Extensive inundation of structures and roads

Every listed crest

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

Listed crests at the Tanana River at Nenana, 1948 to 2025 8101214161820ft Flood stage 12.5 ftMajor 16.0 ft May 20, 1948: 15.50 ft, moderate flooding; 135,000 cubic feet per secondJun 16, 1962: 14.11 ft, minor flooding; 117,000 cubic feet per secondMay 5, 1963: 13.30 ft, minor floodingAug 27, 1963: 11.00 ft, action stage; 80,000 cubic feet per secondJun 6, 1964: 13.09 ft, minor flooding; 101,000 cubic feet per secondJul 28, 1965: 10.15 ft, below flood stage; 76,900 cubic feet per secondJun 11, 1966: 11.35 ft, action stage; 83,500 cubic feet per secondAug 18, 1967: 18.50 ft, major flooding; 186,000 cubic feet per secondJun 21, 1968: 10.38 ft, below flood stage; 73,900 cubic feet per secondAug 7, 1969: 9.78 ft, below flood stage; 66,800 cubic feet per secondJul 20, 1970: 9.02 ft, below flood stage; 61,700 cubic feet per secondAug 12, 1971: 12.88 ft, minor flooding; 98,700 cubic feet per secondMay 11, 1972: 10.96 ft, below flood stage; 79,100 cubic feet per secondAug 25, 1973: 9.99 ft, below flood stage; 70,400 cubic feet per secondSep 1, 1974: 8.86 ft, below flood stage; 60,200 cubic feet per secondJul 22, 1975: 11.67 ft, action stage; 85,700 cubic feet per secondAug 14, 1976: 9.83 ft, below flood stage; 69,000 cubic feet per secondJun 15, 1977: 10.01 ft, below flood stage; 70,600 cubic feet per secondJul 16, 1978: 9.68 ft, below flood stage; 67,600 cubic feet per secondAug 4, 1979: 10.54 ft, below flood stage; 79,900 cubic feet per secondJul 30, 1980: 9.94 ft, below flood stage; 70,000 cubic feet per secondAug 4, 1981: 10.65 ft, below flood stage; 82,500 cubic feet per secondJun 22, 1982: 11.20 ft, action stage; 81,300 cubic feet per secondAug 10, 1983: 10.89 ft, below flood stage; 83,700 cubic feet per secondJun 18, 1984: 12.50 ft, minor flooding; 94,500 cubic feet per secondJun 29, 1985: 11.57 ft, action stage; 84,700 cubic feet per secondJul 23, 1986: 12.96 ft, minor flooding; 99,600 cubic feet per secondJul 16, 1987: 10.91 ft, below flood stage; 78,700 cubic feet per secondJul 17, 1988: 11.64 ft, action stage; 89,700 cubic feet per secondMay 2, 1989: 14.20 ft, minor floodingJun 28, 1989: 13.10 ft, minor flooding; 101,000 cubic feet per secondSep 16, 1990: 12.10 ft, action stage; 83,500 cubic feet per secondMay 5, 1991: 13.29 ft, minor flooding; 103,000 cubic feet per secondJun 4, 1992: 11.87 ft, action stage; 87,700 cubic feet per secondSep 4, 1993: 9.93 ft, below flood stage; 69,800 cubic feet per secondApr 30, 1994: 11.67 ft, action stageJun 23, 1994: 11.59 ft, action stage; 84,900 cubic feet per secondJun 28, 1995: 10.68 ft, below flood stage; 76,600 cubic feet per secondMay 8, 1996: 8.99 ft, below flood stageJul 3, 1996: 8.23 ft, below flood stage; 54,600 cubic feet per secondAug 15, 1997: 12.08 ft, action stage; 92,500 cubic feet per secondJul 19, 1998: 9.67 ft, below flood stage; 66,400 cubic feet per secondAug 14, 1999: 10.17 ft, below flood stage; 72,000 cubic feet per secondAug 16, 2000: 12.04 ft, action stage; 89,400 cubic feet per secondAug 1, 2001: 12.47 ft, action stage; 94,200 cubic feet per secondAug 20, 2002: 11.24 ft, action stage; 81,600 cubic feet per secondJul 29, 2003: 12.79 ft, minor flooding; 97,700 cubic feet per secondJul 1, 2004: 9.97 ft, below flood stage; 71,900 cubic feet per secondJul 20, 2005: 11.08 ft, action stage; 80,200 cubic feet per secondJun 25, 2006: 10.82 ft, below flood stage; 77,800 cubic feet per secondAug 9, 2007: 10.89 ft, below flood stage; 78,500 cubic feet per secondAug 2, 2008: 14.66 ft, moderate flooding; 118,000 cubic feet per secondMay 5, 2009: 9.43 ft, below flood stage; 65,300 cubic feet per secondJul 25, 2010: 10.03 ft, below flood stage; 72,400 cubic feet per secondJul 7, 2011: 10.35 ft, below flood stage; 77,200 cubic feet per secondJul 6, 2012: 10.70 ft, below flood stage; 76,700 cubic feet per secondSep 23, 2012: 11.48 ft, action stageMay 30, 2013: 12.30 ft, action stage; 92,300 cubic feet per secondJul 4, 2014: 13.23 ft, minor flooding; 103,000 cubic feet per secondAug 29, 2015: 9.75 ft, below flood stage; 68,200 cubic feet per secondJul 25, 2016: 12.27 ft, action stage; 97,300 cubic feet per secondJul 10, 2017: 10.09 ft, below flood stage; 73,000 cubic feet per secondAug 8, 2018: 11.90 ft, action stage; 90,900 cubic feet per secondAug 19, 2019: 12.89 ft, minor flooding; 101,000 cubic feet per secondJun 26, 2020: 13.60 ft, minor flooding; 113,000 cubic feet per secondMay 6, 2021: 10.33 ft, below flood stageJul 25, 2021: 9.70 ft, below flood stage; 68,800 cubic feet per secondJul 14, 2022: 11.09 ft, action stage; 83,700 cubic feet per secondAug 31, 2023: 12.63 ft, minor flooding; 102,000 cubic feet per secondAug 1, 2024: 11.46 ft, action stage; 87,900 cubic feet per secondAug 11, 2024: 11.46 ft, action stage; 87,900 cubic feet per secondAug 31, 2025: 11.67 ft, action stage; 90,500 cubic feet per second Highest, 18.50 ft, Aug 18, 1967 19501960197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Tanana River at Nenana 1940s: 1 1950s: 0 1960s: 4 4 1970s: 1 1980s: 4 1990s: 1 2000s: 2 2010s: 2 2020s: 2 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

The 50 highest of 72 listed crests.

Highest listed crests, Tanana River at Nenana
1Aug 18, 196718.50+6.00Major186,000
2May 20, 194815.50+3.00Moderate135,000
3Aug 2, 200814.66+2.16Moderate118,000
4May 2, 198914.20+1.70Minor—
5Jun 16, 196214.11+1.61Minor117,000
6Jun 26, 202013.60+1.10Minor113,000
7May 5, 196313.30+0.80Minor—
8May 5, 199113.29+0.79Minor103,000
9Jul 4, 201413.23+0.73Minor103,000
10Jun 28, 198913.10+0.60Minor101,000
11Jun 6, 196413.09+0.59Minor101,000
12Jul 23, 198612.96+0.46Minor99,600
13Aug 19, 201912.89+0.39Minor101,000
14Aug 12, 197112.88+0.38Minor98,700
15Jul 29, 200312.79+0.29Minor97,700
16Aug 31, 202312.63+0.13Minor102,000
17Jun 18, 198412.500.00Minor94,500
18Aug 1, 200112.47−0.03Action94,200
19May 30, 201312.30−0.20Action92,300
20Jul 25, 201612.27−0.23Action97,300
21Sep 16, 199012.10−0.40Action83,500
22Aug 15, 199712.08−0.42Action92,500
23Aug 16, 200012.04−0.46Action89,400
24Aug 8, 201811.90−0.60Action90,900
25Jun 4, 199211.87−0.63Action87,700
26Jul 22, 197511.67−0.83Action85,700
27Apr 30, 199411.67−0.83Action—
28Aug 31, 202511.67−0.83Action90,500
29Jul 17, 198811.64−0.86Action89,700
30Jun 23, 199411.59−0.91Action84,900
31Jun 29, 198511.57−0.93Action84,700
32Sep 23, 201211.48−1.02Action—
33Aug 1, 202411.46−1.04Action87,900
34Aug 11, 202411.46−1.04Action87,900
35Jun 11, 196611.35−1.15Action83,500
36Aug 20, 200211.24−1.26Action81,600
37Jun 22, 198211.20−1.30Action81,300
38Jul 14, 202211.09−1.41Action83,700
39Jul 20, 200511.08−1.42Action80,200
40Aug 27, 196311.00−1.50Action80,000
41May 11, 197210.96−1.54Below flood stage79,100
42Jul 16, 198710.91−1.59Below flood stage78,700
43Aug 10, 198310.89−1.61Below flood stage83,700
44Aug 9, 200710.89−1.61Below flood stage78,500
45Jun 25, 200610.82−1.68Below flood stage77,800
46Jul 6, 201210.70−1.80Below flood stage76,700
47Jun 28, 199510.68−1.82Below flood stage76,600
48Aug 4, 198110.65−1.85Below flood stage82,500
49Aug 4, 197910.54−1.96Below flood stage79,900
50Jun 21, 196810.38−2.12Below flood stage73,900

The worst floods along the Tanana River

For this gauge's highest crests, the other gauges on the Tanana River that crested above flood stage within a week.

August 18, 1967: 18.50 ft here, major flooding

  • FairbanksAK · Aug 16, 1967 · 27.80 ft · Major · its highest

August 2, 2008: 14.66 ft here, moderate flooding

  • FairbanksAK · Jul 30, 2008 · 26.66 ft · Moderate

Gauges on the Tanana River

Flood gauges sharing the river's name, linked within 80 miles of one another.

Flood gauges on the Tanana River
Big DeltaAK23.023.57 ft, Jul 29, 19490
FairbanksAK24.527.80 ft, Aug 16, 19671
Manley Hot SpringsAK15.019.55 ft, May 8, 20220
Nenana this gaugeAK12.518.50 ft, Aug 18, 19671

Other gauges in Yukon-Koyukuk Census Area

Flood gauges in Yukon-Koyukuk Census Area
Allakaket26.035.60 ft, Aug 30, 19941
Hughes64.070.80 ft, Aug 22, 19941
McGrath21.026.50 ft, May 18, 19720
Wiseman11.513.49 ft, Jun 16, 20260
Coldfoot18.720.86 ft, Aug 26, 20250
Manley Hot Springs15.019.55 ft, May 8, 20220
Galena124.0131.00 ft, May 23, 19712
Ruby40.043.40 ft, May 14, 20260
Stevens Village61.063.00 ft, Jun 15, 19640

Yukon-Koyukuk Census Area: every hazard · River floods across the country · Alaska

NOAA National Water Prediction Service, gauge ENNA2, 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.