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This probabilistic forecast is issued by the Alaska Pacific River Forecast Center.
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About this graph
Forecasts for the Koyukuk River at Hughes are issued routinely during the warm season, and as needed at other times of the year.
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Upstream Gauge - at Allakaket Upstream Gauge
Zoom Level:10
Flood Categories (in feet)
Major Flood Stage: 70
Moderate Flood Stage: 67
Flood Stage: 64
Action Stage: 62
Low Stage (in feet): -9999

Historic Crests
(1) 71.80 ft on 08/22/1994
(2) 62.66 ft on 05/18/2005
(3) 58.34 ft on 08/03/2003
(4) 57.33 ft on 05/28/2004
(5) 57.29 ft on 05/18/2006
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 51.24 ft on 05/30/2007
(2) 57.29 ft on 05/18/2006
(3) 62.66 ft on 05/18/2005
(4) 57.33 ft on 05/28/2004
(5) 58.34 ft on 08/03/2003
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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Gauge LocationGauge Map Marker
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
70 Major flood stage.
69.8 Water enters water treatment plant. Door sill of clinic, washeteria.
68.8 Floor of city office/post office begins to flood.
67.2 Water surrounds school and flooding of the school begins.
67 Moderate flood stage.
65.7 Floor of generator.
64.5 Water starts to go over tank Farm Berm.
64 WATER BEGINS TO GO OVER TOP OF BANK. Minor flood stage.
(1) Upstream
(2) Overview
(3) COE stafff
(4) Downstream

Other Real-time and/or Archive Data Sources:

Additional Information Collapse
Long-term Hydrograph
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
Fairbanks Weather Forecast Office
UAF-IARC Bldg. P.O. Box 757345
Fairbanks, AK 99775-7345
(907) 458-3700
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Page last modified: 6-Nov-2019 2:37 PM
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