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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.

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)

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Printable Image About this graph Tabular Data (UTC) Tabular Data (AKDT) Datum: NAVD88 Metadata

NOTE: Forecasts for the Chena River at Mile 40 Bridge are issued routinely during the warm season, and as needed at other times of the year.

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Downstream Gauge

Flood Categories (in feet) Major Flood Stage: 0 Moderate Flood Stage: 25 Flood Stage: 19.5 Action Stage: 18.5 Low Stage (in feet): -9999 Historic Crests (1) 26.60 ft on 08/13/1967 (2) 23.65 ft on 06/26/1994 (3) 23.56 ft on 07/28/2003 (4) 22.84 ft on 06/27/1995 (5) 22.07 ft on 06/20/2014 Show More Historic Crests (P): Preliminary values subject to further review. Recent Crests (1) 18.53 ft on 05/11/2017 (2) 21.18 ft on 08/01/2016 (3) 20.48 ft on 08/28/2015 (4) 22.07 ft on 06/20/2014 (5) 20.44 ft on 06/06/2013 Show More Recent Crests (P): Preliminary values subject to further review. Low Water Records Currently none available.

Zoom Level:8 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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19.91	Impacts are along Chena Hot Springs Road (CHSR). All impacts from stages of 18.79 and 18.40 are more severe, plus: Water flowing over road at mi 36.9 (6-10" deep), Granite Tors, Stiles Creek and low lying areas are flooded. (6/6/13)
18.79	Impacts are along Chena Hot Springs Road (CHSR). All impacts from a stage of 18.40 are more severe, plus: River access at 28 mi closed, water flowing over road at 36.9 mi (6" deep, 40-50 ft wide), west end of Granite Tors Parking Lot begins to flood, Stiles Creek trailhead and campground become unusable. (5/26/13)
18.39	Impacts along Chena Hot Springs Road (CHSR): Rosehip Campground closed (27 mi.), river access at mi 28 closed, Compeau trailhead flooded but usable (29.9 mi.), Water beginning to pond on upstream side of CHSR at mi 36.9, and Stiles Creek shooting range flooded. (5/25/13)
Photos (1) Gage (2) CHSR at mile 36.9. River stage of 19.50ft. (3) Compeau trailhead at a stage of 19.50 ft. (4) Chena R at UCHA2 (Granite Tors parking lot). Stage of 19.50 ft. (5) high water impacts at parking area for stage = 20.4 ft, gage datum, on 06 June 2013 (6) high water impacts at parking area for stage = 20.4 ft, gage datum, on 06 June 2013

About This Location

Latitude: 64.901972° N, Longitude: 146.361333° W, Horizontal Datum: NAD83/WGS84 River Stage Reference Frame Gauge Height Flood Stage Uses NWS stage 0 ft 19.5 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 725.91 Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps NGVD 29 NULL NULL Older USGS topographic maps, NGVD29 benchmarks MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks Other Not Available Not Available   Current/Historical Observations: U.S. Geological Survey (USGS) Data and Site Info for Mile 40 Bridge

Additional Information

Long-term Hydrograph Water Temperature Chart

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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