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Kuskokwim River at McGrath

Highest listed crest 26.50 ftFlood stage 21.0 ft51 crests since 1963

The Kuskokwim River at McGrath crested above flood stage 15 times among the 51 crests the National Weather Service lists from 1963 to 2025. The highest, 26.50 ft on May 18, 1972, was moderate flooding, 5.50 feet above flood stage.

The gauge

Highest listed crest
26.50 ft
May 18, 1972
Flood stage
21.0 ft
Major flooding from 27.0 ft
Crests at major
0
15 above flood stage
Most recent flood crest
May 14, 2002
24.55 ft, moderate flooding

Flood stages

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

Flood categories, Kuskokwim River at McGrath
Action stage19.57May 14, 2023The level at which the NWS or its partners begin to take action
Flood stage (minor)21.09May 14, 1999Minimal or no property damage, but possibly some public threat
Moderate flood stage23.56May 14, 2002Some inundation of structures and roads near the stream
Major flood stage27.00—Extensive inundation of structures and roads

Every listed crest

51 crests from 1963 to 2025. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Kuskokwim River at McGrath, 1963 to 2025 1015202530ft Flood stage 21.0 ftMajor 27.0 ft Aug 28, 1963: 24.60 ft, moderate flooding; 67,500 cubic feet per secondJun 2, 1964: 26.02 ft, moderate floodingMay 12, 1966: 20.90 ft, action stageAug 22, 1967: 22.83 ft, minor flooding; 69,800 cubic feet per secondMay 14, 1968: 22.04 ft, minor floodingAug 7, 1969: 16.58 ft, below flood stage; 38,100 cubic feet per secondJul 7, 1970: 14.70 ft, below flood stage; 31,600 cubic feet per secondMay 24, 1971: 21.40 ft, minor flooding; 67,200 cubic feet per secondMay 18, 1972: 26.50 ft, moderate floodingMay 22, 1972: 21.40 ft, minor flooding; 67,200 cubic feet per secondMay 10, 1973: 19.20 ft, below flood stageAug 25, 1973: 15.50 ft, below flood stage; 35,500 cubic feet per secondMay 12, 1975: 23.23 ft, minor floodingMay 9, 1976: 25.70 ft, moderate floodingAug 12, 1983: 15.58 ft, below flood stageAug 29, 1984: 16.14 ft, below flood stageJun 2, 1985: 22.74 ft, minor floodingSep 24, 1986: 17.89 ft, below flood stageMay 9, 1987: 18.75 ft, below flood stageMay 5, 1988: 17.84 ft, below flood stageAug 14, 1989: 19.30 ft, below flood stageMay 2, 1990: 22.82 ft, minor floodingMay 6, 1991: 23.76 ft, moderate floodingMay 20, 1992: 17.55 ft, below flood stageSep 7, 1993: 18.92 ft, below flood stageAug 29, 1994: 18.80 ft, below flood stageMay 10, 1995: 18.45 ft, below flood stageMay 11, 1996: 22.10 ft, minor floodingMay 14, 1999: 22.21 ft, minor floodingMay 6, 2000: 19.69 ft, action stageMay 16, 2001: 17.72 ft, below flood stageMay 14, 2002: 24.55 ft, moderate floodingJul 30, 2003: 19.52 ft, action stageMay 30, 2004: 15.37 ft, below flood stageMay 3, 2005: 19.59 ft, action stageMay 12, 2006: 16.45 ft, below flood stageAug 9, 2007: 16.34 ft, below flood stageMay 15, 2008: 15.84 ft, below flood stageMay 6, 2009: 19.70 ft, action stageAug 20, 2010: 13.33 ft, below flood stageMay 6, 2011: 19.51 ft, action stageMay 25, 2013: 16.14 ft, below flood stageJul 3, 2014: 14.91 ft, below flood stageJul 13, 2015: 11.50 ft, below flood stageJul 9, 2016: 16.48 ft, below flood stageMay 4, 2021: 15.90 ft, below flood stageMay 14, 2023: 20.65 ft, action stageMay 18, 2023: 18.50 ft, below flood stage; 57,900 cubic feet per secondMay 1, 2024: 18.22 ft, below flood stageAug 21, 2024: 17.82 ft, below flood stage; 54,000 cubic feet per secondApr 24, 2025: 18.22 ft, below flood stage Highest, 26.50 ft, May 18, 1972 197019801990200020102020

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Kuskokwim River at McGrath 1960s: 4 1970s: 5 5 1980s: 1 1990s: 4 2000s: 1 2010s: 0 2020s: 0 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 51 listed crests.

Highest listed crests, Kuskokwim River at McGrath
1May 18, 197226.50+5.50Moderate—
2Jun 2, 196426.02+5.02Moderate—
3May 9, 197625.70+4.70Moderate—
4Aug 28, 196324.60+3.60Moderate67,500
5May 14, 200224.55+3.55Moderate—
6May 6, 199123.76+2.76Moderate—
7May 12, 197523.23+2.23Minor—
8Aug 22, 196722.83+1.83Minor69,800
9May 2, 199022.82+1.82Minor—
10Jun 2, 198522.74+1.74Minor—
11May 14, 199922.21+1.21Minor—
12May 11, 199622.10+1.10Minor—
13May 14, 196822.04+1.04Minor—
14May 24, 197121.40+0.40Minor67,200
15May 22, 197221.40+0.40Minor67,200
16May 12, 196620.90−0.10Action—
17May 14, 202320.65−0.35Action—
18May 6, 200919.70−1.30Action—
19May 6, 200019.69−1.31Action—
20May 3, 200519.59−1.41Action—
21Jul 30, 200319.52−1.48Action—
22May 6, 201119.51−1.49Action—
23Aug 14, 198919.30−1.70Below flood stage—
24May 10, 197319.20−1.80Below flood stage—
25Sep 7, 199318.92−2.08Below flood stage—
26Aug 29, 199418.80−2.20Below flood stage—
27May 9, 198718.75−2.25Below flood stage—
28May 18, 202318.50−2.50Below flood stage57,900
29May 10, 199518.45−2.55Below flood stage—
30May 1, 202418.22−2.78Below flood stage—
31Apr 24, 202518.22−2.78Below flood stage—
32Sep 24, 198617.89−3.11Below flood stage—
33May 5, 198817.84−3.16Below flood stage—
34Aug 21, 202417.82−3.18Below flood stage54,000
35May 16, 200117.72−3.28Below flood stage—
36May 20, 199217.55−3.45Below flood stage—
37Aug 7, 196916.58−4.42Below flood stage38,100
38Jul 9, 201616.48−4.52Below flood stage—
39May 12, 200616.45−4.55Below flood stage—
40Aug 9, 200716.34−4.66Below flood stage—
41Aug 29, 198416.14−4.86Below flood stage—
42May 25, 201316.14−4.86Below flood stage—
43May 4, 202115.90−5.10Below flood stage—
44May 15, 200815.84−5.16Below flood stage—
45Aug 12, 198315.58−5.42Below flood stage—
46Aug 25, 197315.50−5.50Below flood stage35,500
47May 30, 200415.37−5.63Below flood stage—
48Jul 3, 201414.91−6.09Below flood stage—
49Jul 7, 197014.70−6.30Below flood stage31,600
50Aug 20, 201013.33−7.67Below flood stage—

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
Wiseman11.513.49 ft, Jun 16, 20260
Coldfoot18.720.86 ft, Aug 26, 20250
Manley Hot Springs15.019.55 ft, May 8, 20220
Nenana12.518.50 ft, Aug 18, 19671
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 MCGA2, 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.