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Middle Fork Koyukuk River near Wiseman

Highest listed crest 13.49 ftFlood stage 11.5 ft12 crests since 2003

The Middle Fork Koyukuk River near Wiseman crested above flood stage 4 times among the 12 crests the National Weather Service lists from 2003 to 2026. The highest, 13.49 ft on June 16, 2026, was moderate flooding, 1.99 feet above flood stage.

The gauge

Highest listed crest
13.49 ft
June 16, 2026
Flood stage
11.5 ft
Major flooding from 14.0 ft
Crests at major
0
4 above flood stage
Most recent flood crest
June 16, 2026
13.49 ft, moderate flooding
Identifiers
NWS MFKA2
Out of service

Flood stages

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

Flood categories, Middle Fork Koyukuk River near Wiseman
Action stage10.52Aug 19, 2024The level at which the NWS or its partners begin to take action
Flood stage (minor)11.52Aug 28, 2023Minimal or no property damage, but possibly some public threat
Moderate flood stage12.52Jun 16, 2026Some inundation of structures and roads near the stream
Major flood stage14.00—Extensive inundation of structures and roads

Every listed crest

12 crests from 2003 to 2026. Filled: at or above flood stage. Hover a crest for its date and stage.

Listed crests at the Middle Fork Koyukuk River near Wiseman, 2003 to 2026 8101214ft Flood stage 11.5 ftMajor 14.0 ft Aug 17, 2003: 10.05 ft, below flood stageMay 25, 2004: 10.27 ft, below flood stageMay 16, 2005: 11.77 ft, minor floodingMay 22, 2006: 10.05 ft, below flood stageApr 22, 2007: 8.90 ft, below flood stageJun 5, 2008: 9.45 ft, below flood stageAug 27, 2015: 10.75 ft, action stageJun 2, 2022: 9.45 ft, below flood stageAug 28, 2023: 11.50 ft, minor floodingAug 19, 2024: 10.57 ft, action stageAug 26, 2025: 12.85 ft, moderate floodingJun 16, 2026: 13.49 ft, moderate flooding Highest, 13.49 ft, Jun 16, 2026 20052010201520202025

Crests at or above flood stage, by decade

Crests at or above flood stage per decade, Middle Fork Koyukuk River near Wiseman 2000s: 1 2010s: 0 2020s: 3 3 2000s2010s2020s
  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

Highest listed crests, Middle Fork Koyukuk River near Wiseman
1Jun 16, 202613.49+1.99Moderate—
2Aug 26, 202512.85+1.35Moderate—
3May 16, 200511.77+0.27Minor—
4Aug 28, 202311.500.00Minor—
5Aug 27, 201510.75−0.75Action—
6Aug 19, 202410.57−0.93Action—
7May 25, 200410.27−1.23Below flood stage—
8Aug 17, 200310.05−1.45Below flood stage—
9May 22, 200610.05−1.45Below flood stage—
10Jun 5, 20089.45−2.05Below flood stage—
11Jun 2, 20229.45−2.05Below flood stage—
12Apr 22, 20078.90−2.60Below 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
McGrath21.026.50 ft, May 18, 19720
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 MFKA2, 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.