Web Portal Changes: The Advanced Hydrologic Prediction Service (AHPS) hosted at https://water.weather.gov will be replaced by the National Water Prediction Service (NWPS), with a target of Spring 2024. Existing AHPS content and features will be preserved and expanded within NWPS. The NWS is now accepting feedback on NWPS. Please visit https://www.weather.gov/owp/operations for more information.

Experimental National Water Center Products: Flood Inundation Mapping services are now available for 10% of the U.S. population. Please visit https://www.weather.gov/owp/operations for more information. The National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook, and real-time geospatial services depicting River Forecast Center and National Water Model forecasts, continue to be accessible via the URL above, as described in the StoryMap here.

DID YOU KNOW... Please try our new TEST hydrograph page link at: https://preview.water.noaa.gov/gauges/abcde - Just replace “abcde” with your local hydrograph five character ID found in the lower left corner of the hydrograph.  In late March of 2024, the base URL path will become water.noaa.gov.  Feedback can be provided HERE

Weather Forecast Office Fairbanks, AK

Alaska Pacific River Forecast Center

Hydrograph

River at a Glance

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Probability Information Weekly Chance of Exceeding Levels Chance of Exceeding Levels During Entire Period Short-term Probabilistic Guidance (Experimental) Not Available

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About this graph Tabular Data (UTC) Tabular Data (AKST) Datum: Not Available Metadata

NOTE: Gage data do not meet the quality standards of USGS gages. NOTE: Stage may be affected by ice. NOTE: Forecasts for the Chisana River at Northway Road Bridge are issued routinely during the warm season, and as needed at other times of the year.

Default Hydrograph Scale to Flood Categories   Return to Area Map

Flood Categories (in feet) Major Flood Stage: 0 Moderate Flood Stage: 0 Flood Stage: 12.5 Action Stage: 12 Low Stage (in feet): 0 Historic Crests (1) 13.85 ft on 07/29/2001 (2) 13.75 ft on 08/07/1997 (3) 13.18 ft on 06/28/1964 (4) 12.43 ft on 07/17/2010 (5) 12.40 ft on 07/05/1959 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 12.43 ft on 07/17/2010 (2) 10.20 ft on 08/31/2008 (3) 10.85 ft on 08/04/2007 (4) 11.38 ft on 07/15/2006 (5) 11.98 ft on 07/18/2005 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available.

Zoom Level:12 Legend FEMA Layer Gauge Location Disclaimer 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

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12.5	Minor Flood Stage - Water begins to flow onto lowest portions of the Northway Road for approximately 2.5 miles south of the Chisana River bridge. Some residental driveways and yards along this stretch of the Northway Road will also begin to become inundated with water. Slumping and erosion along the Northway Road is possible. Higher water levels may result in significant flooding and damage to the Northway Road in this area and the road may become impassable.
12	Action Stage - Significant amount of water flows over bank into the wetlands surrounding the Northway Road south of the Chisana River bridge. Saturated road bed may begin to result in some slumping of road shoulder.
11	Water begins to flow over lowest sections of river bank and starts to inundate ponds/lakes/wetlands along the Northway Road for approx 2 miles south of the Chisana River bridge. No impact to road or residences.
Photos (1) Chisana River looking downstream, Stage = 6.74 ft (2) Chisana River looking upstream from the Northway Rd bridge (3) Chisana River looking downstream from the Northway Rd bridge (4) Chisana River bridge looking north

About This Location

Latitude: 63.006389° N, Longitude: 141.806944° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 12.5 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps Vertical Datum Elevation (gauge height = 0) Elevation (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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other 1682.85 ft 1694.85 ft   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Northway Road Bridge

Additional Information

Long-term Hydrograph

Resources

Hydrologic Resources Text Products Past Precipitation Forecast Precipitation River Forecast Centers River Stage Summary Alaska-Pacific River Forecast Center Inundation Mapping Locations

Additional Resources Area Hydrographs NWS Precipitation and River Forecasting AHPS Iframes for Developers Mobile iNWS for emergency management Search River Notes Nat'l Snow Information Alaska Snow Maps Flood Stage Definitions

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