Rivers in Alaska

Koyukuk River near Bettles

Yukon-Koyukuk County, AlaskaNWS BTTA2Fairbanks office

Below flood stage
13.97ftStage

Observed Mon, Sep 21, 2:00 PM UTC

Flood stage
33.00 ft
Forecast crest
13.73 ftTue, Sep 22, 12:00 PM UTC
Record crest
24.34 ft1994

Open the live map with the river flood outlook

Flood stages and impacts

CategoryStage
Major flood37.00 ft
Moderate flood35.00 ft
Minor flood33.00 ft
Action24.00 ft

Crest history

36 crests on NOAA’s list since 1982.

#DateStage
1August 29, 199424.34 ft
2May 14, 201123.04 ft
3May 28, 199822.45 ft
4August 26, 202522.25 ft
5May 14, 199621.69 ft
6June 7, 199321.58 ft
7July 16, 201421.41 ft
8May 26, 200220.69 ft
9June 17, 202620.57 ft
10August 16, 200120.20 ft
11May 25, 201920.14 ft
12September 15, 201719.98 ft
13August 2, 202119.74 ft
14August 4, 198419.32 ft
15May 22, 200519.31 ft
16May 27, 198519.21 ft
17June 14, 198218.89 ft
18June 24, 201818.71 ft
19May 27, 202018.34 ft
20May 10, 199518.05 ft
21September 24, 201617.80 ft
22May 29, 201317.75 ft
23May 11, 201517.59 ft
24September 1, 201217.20 ft
25June 2, 198317.19 ft

Most recent crests

  • June 17, 2026: 20.57 ft
  • August 26, 2025: 22.25 ft
  • August 2, 2021: 19.74 ft
  • May 27, 2020: 18.34 ft
  • May 25, 2019: 20.14 ft
  • June 24, 2018: 18.71 ft
  • September 15, 2017: 19.98 ft
  • September 24, 2016: 17.80 ft
  • May 11, 2015: 17.59 ft
  • July 16, 2014: 21.41 ft

Nearby

Upstream, downstream and the gauges around this one.

What this means

Forecasts by the Alaska Pacific River Forecast Center. Forecasts are issued routinely during the warm season, and as needed at other times of the year. Stage measured manually and reported by river observer. No automated gauge on-site. Stage may be affected by ice.

Sources

Stage, flood stages, impacts and crest history from NOAA’s National Water Prediction Service.