Skip Navigation Link  
NOAA logo - Click to go to the NOAA homepage National Weather Service NWS logo - Click to go to the NWS homepage
Advanced Hydrologic Prediction Service
Image background of Navigation bar Left
Bookmark and Share Navigation Bar End Cap

Hydrograph River at a Glance Download
Koyukuk River at Bettles Stage (ft)Highest Observation: 14.62 ft at 8:10AM Jun 12, 2019Observed: 12.58 ft at 7:55AM Jun 13, 2019Observed: 12.33 ft at 8:00AM Jun 14, 2019Observed: 12.16 ft at 11:00AM Jun 15, 2019Observed: 11.95 ft at 11:00AM Jun 16, 2019Observed: 11.91 ft at 9:00AM Jun 17, 2019Highest Forecast: 11.43 ft 10:00AM Jun 19, 2019Forecast: 11.38 ft 4:00PM Jun 19, 2019Forecast: 11.34 ft 10:00PM Jun 19, 2019Forecast: 11.31 ft 4:00AM Jun 20, 2019Forecast: 11.27 ft 10:00AM Jun 20, 2019Forecast: 11.24 ft 4:00PM Jun 20, 2019Forecast: 11.21 ft 10:00PM Jun 20, 2019BTTA2(plotting HGIRV) Graph Created (7:32AM Jun 19, 2019)ObservedForecast (issued 1:45PM Jun 18)Latest observed value: 11.91 ft at 9:00 AM AKDT 17-Jun-2019. Flood Stage is 33 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (AKDT)
XML Data
RSS Files
Datum: Not Available
NOTE: Automated gauge readings are unavailable, readings taken manually.

NOTE: Forecasts for the Koyukuk River at Bettles are issued routinely during the warm season, and as needed at other times of the year.

Return to Area Map
Upstream Gauge - near Wiseman Upstream Gauge Downstream Gauge Downstream Gauge - below John River
Flood Categories (in feet)
Major Flood Stage: 37
Moderate Flood Stage: 35
Flood Stage: 33
Action Stage: 24
Low Stage (in feet): -9999

Historic Crests
(1) 19.31 ft on 05/22/2005
(2) 17.06 ft on 07/27/2003
(3) 16.58 ft on 07/18/2006
(4) 16.04 ft on 05/22/2009
(5) 15.85 ft on 05/27/2004
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 12.92 ft on 06/22/2010
(2) 16.04 ft on 05/22/2009
(3) 15.36 ft on 05/15/2008
(4) 12.34 ft on 08/11/2007
(5) 16.58 ft on 07/18/2006
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:10
KML Image
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
(1) Downstream
(2) Gage
(3) Upstream
About This Location Collapse

Latitude: 66.926111° N, Longitude: 151.508611° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 33 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(gauge height = flood stage)
Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 610 ft 643 ft Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
Additional Information Collapse
Long-term Hydrograph
Resources Collapse
Hydrologic Resources Additional Resources
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
Ask Questions/Webmaster
Page last modified: 1-Mar-2019 12:31 AM
Privacy Policy
About Us
Career Opportunities