Skip Navigation Link weather.gov  
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
Fortymile River at Walker Fork Stage (ft)Flow (kcfs)Observed: 9.32 ft at 12:35AM Mar 23, 2020Observed: 9.32 ft at 1:21AM Mar 23, 2020Observed: 9.36 ft at 2:21AM Mar 23, 2020Observed: 9.35 ft at 3:27AM Mar 23, 2020Observed: 9.4 ft at 4:21AM Mar 23, 2020Observed: 9.37 ft at 5:29AM Mar 23, 2020Observed: 9.4 ft at 6:21AM Mar 23, 2020Observed: 9.4 ft at 7:21AM Mar 23, 2020Observed: 9.4 ft at 8:33AM Mar 23, 2020Observed: 9.3 ft at 9:21AM Mar 23, 2020Observed: 9.16 ft at 10:21AM Mar 23, 2020Observed: 9.2 ft at 11:21AM Mar 23, 2020Observed: 9.28 ft at 12:36PM Mar 23, 2020Observed: 9.3 ft at 1:21PM Mar 23, 2020Observed: 9.32 ft at 2:33PM Mar 23, 2020Observed: 9.3 ft at 3:40PM Mar 23, 2020Observed: 9.38 ft at 4:21PM Mar 23, 2020Observed: 9.39 ft at 5:27PM Mar 23, 2020Observed: 9.4 ft at 6:21PM Mar 23, 2020Observed: 9.44 ft at 7:27PM Mar 23, 2020Observed: 9.4 ft at 8:22PM Mar 23, 2020Observed: 9.42 ft at 9:21PM Mar 23, 2020Observed: 9.45 ft at 10:21PM Mar 23, 2020Observed: 9.44 ft at 11:22PM Mar 23, 2020Observed: 9.48 ft at 12:21AM Mar 24, 2020Observed: 9.5 ft at 1:21AM Mar 24, 2020Observed: 9.45 ft at 2:21AM Mar 24, 2020Observed: 9.46 ft at 3:21AM Mar 24, 2020Observed: 9.47 ft at 4:21AM Mar 24, 2020Observed: 9.46 ft at 5:21AM Mar 24, 2020Observed: 9.46 ft at 6:21AM Mar 24, 2020Observed: 9.45 ft at 7:27AM Mar 24, 2020Observed: 9.45 ft at 8:21AM Mar 24, 2020Observed: 9.46 ft at 9:27AM Mar 24, 2020Observed: 9.45 ft at 10:21AM Mar 24, 2020Observed: 9.45 ft at 11:33AM Mar 24, 2020Observed: 9.42 ft at 12:46PM Mar 24, 2020Observed: 9.43 ft at 1:21PM Mar 24, 2020Observed: 9.36 ft at 2:28PM Mar 24, 2020Observed: 9.4 ft at 4:44PM Mar 24, 2020Observed: 9.46 ft at 5:21PM Mar 24, 2020Observed: 9.5 ft at 6:34PM Mar 24, 2020Observed: 9.5 ft at 7:21PM Mar 24, 2020Observed: 9.53 ft at 8:21PM Mar 24, 2020Observed: 9.56 ft at 9:28PM Mar 24, 2020Observed: 9.56 ft at 10:21PM Mar 24, 2020Observed: 9.56 ft at 11:21PM Mar 24, 2020Observed: 9.56 ft at 12:28AM Mar 25, 2020Observed: 9.56 ft at 1:21AM Mar 25, 2020Observed: 9.56 ft at 2:21AM Mar 25, 2020Observed: 9.56 ft at 3:21AM Mar 25, 2020Observed: 9.56 ft at 4:21AM Mar 25, 2020Observed: 9.56 ft at 5:21AM Mar 25, 2020Observed: 9.56 ft at 6:28AM Mar 25, 2020Observed: 9.56 ft at 7:21AM Mar 25, 2020Observed: 9.53 ft at 8:21AM Mar 25, 2020Observed: 9.53 ft at 9:28AM Mar 25, 2020Observed: 9.46 ft at 10:27AM Mar 25, 2020Observed: 9.43 ft at 11:21AM Mar 25, 2020Observed: 9.43 ft at 12:47PM Mar 25, 2020Observed: 9.45 ft at 1:27PM Mar 25, 2020Observed: 9.46 ft at 2:21PM Mar 25, 2020Observed: 9.46 ft at 3:45PM Mar 25, 2020Observed: 9.46 ft at 4:28PM Mar 25, 2020Observed: 9.46 ft at 6:21PM Mar 25, 2020Observed: 9.5 ft at 7:22PM Mar 25, 2020Observed: 9.48 ft at 8:27PM Mar 25, 2020Observed: 9.48 ft at 9:21PM Mar 25, 2020Observed: 9.49 ft at 10:27PM Mar 25, 2020Observed: 9.45 ft at 11:21PM Mar 25, 2020Observed: 9.48 ft at 12:52AM Mar 26, 2020Observed: 9.42 ft at 1:21AM Mar 26, 2020Observed: 9.42 ft at 2:21AM Mar 26, 2020Observed: 9.47 ft at 3:22AM Mar 26, 2020Observed: 9.5 ft at 5:17AM Mar 26, 2020Observed: 9.47 ft at 5:23AM Mar 26, 2020Observed: 9.48 ft at 6:21AM Mar 26, 2020Observed: 9.56 ft at 7:22AM Mar 26, 2020Observed: 9.54 ft at 8:34AM Mar 26, 2020Observed: 9.4 ft at 10:21AM Mar 26, 2020Observed: 9.4 ft at 11:21AM Mar 26, 2020Observed: 9.29 ft at 12:21PM Mar 26, 2020Observed: 9.25 ft at 1:21PM Mar 26, 2020Observed: 9.32 ft at 2:21PM Mar 26, 2020Observed: 9.28 ft at 3:21PM Mar 26, 2020Observed: 9.31 ft at 4:21PM Mar 26, 2020Observed: 9.33 ft at 5:27PM Mar 26, 2020Observed: 9.36 ft at 6:21PM Mar 26, 2020Observed: 9.38 ft at 7:27PM Mar 26, 2020Observed: 9.38 ft at 8:21PM Mar 26, 2020Observed: 9.42 ft at 9:22PM Mar 26, 2020Observed: 9.41 ft at 10:21PM Mar 26, 2020Observed: 9.4 ft at 11:29PM Mar 26, 2020Observed: 9.45 ft at 12:21AM Mar 27, 2020Observed: 9.48 ft at 1:21AM Mar 27, 2020Observed: 9.4 ft at 2:21AM Mar 27, 2020Observed: 9.4 ft at 3:21AM Mar 27, 2020Observed: 9.45 ft at 4:21AM Mar 27, 2020Observed: 9.45 ft at 5:27AM Mar 27, 2020Observed: 9.46 ft at 6:21AM Mar 27, 2020Observed: 9.52 ft at 7:27AM Mar 27, 2020Observed: 9.41 ft at 8:27AM Mar 27, 2020Observed: 9.33 ft at 9:28AM Mar 27, 2020Observed: 9.2 ft at 11:33AM Mar 27, 2020Observed: 9.18 ft at 12:21PM Mar 27, 2020Observed: 9.18 ft at 1:21PM Mar 27, 2020Observed: 9.15 ft at 2:21PM Mar 27, 2020Observed: 9.17 ft at 3:21PM Mar 27, 2020Observed: 9.18 ft at 4:28PM Mar 27, 2020Observed: 9.27 ft at 5:21PM Mar 27, 2020Observed: 9.36 ft at 6:27PM Mar 27, 2020Observed: 9.36 ft at 6:34PM Mar 27, 2020Observed: 9.36 ft at 7:21PM Mar 27, 2020Observed: 9.4 ft at 8:21PM Mar 27, 2020Observed: 9.43 ft at 9:21PM Mar 27, 2020Observed: 9.31 ft at 10:21PM Mar 27, 2020Observed: 9.4 ft at 11:21PM Mar 27, 2020Observed: 9.32 ft at 12:21AM Mar 28, 2020Observed: 9.37 ft at 1:21AM Mar 28, 2020Observed: 9.44 ft at 2:21AM Mar 28, 2020Observed: 9.36 ft at 3:21AM Mar 28, 2020Observed: 9.39 ft at 4:28AM Mar 28, 2020Observed: 9.4 ft at 5:52AM Mar 28, 2020Observed: 9.4 ft at 6:27AM Mar 28, 2020Observed: 9.46 ft at 7:21AM Mar 28, 2020Highest Observation: 9.57 ft at 8:21AM Mar 28, 2020Observed: 9.3 ft at 9:27AM Mar 28, 2020Observed: 9.15 ft at 10:27AM Mar 28, 2020Observed: 9.1 ft at 11:27AM Mar 28, 2020Observed: 9.13 ft at 12:21PM Mar 28, 2020Observed: 9.09 ft at 1:27PM Mar 28, 2020Observed: 9.17 ft at 2:21PM Mar 28, 2020Observed: 9.2 ft at 3:21PM Mar 28, 2020Observed: 9.22 ft at 4:22PM Mar 28, 2020Observed: 9.39 ft at 6:21PM Mar 28, 2020Observed: 9.41 ft at 7:21PM Mar 28, 2020Observed: 9.31 ft at 8:28PM Mar 28, 2020Observed: 9.37 ft at 9:21PM Mar 28, 2020Observed: 9.39 ft at 10:28PM Mar 28, 2020Observed: 9.45 ft at 11:21PM Mar 28, 2020Observed: 9.33 ft at 12:21AM Mar 29, 2020Observed: 9.35 ft at 1:21AM Mar 29, 2020Observed: 9.4 ft at 2:21AM Mar 29, 2020Observed: 9.28 ft at 3:28AM Mar 29, 2020Observed: 9.39 ft at 4:28AM Mar 29, 2020Observed: 9.45 ft at 5:27AM Mar 29, 2020Observed: 9.45 ft at 6:21AM Mar 29, 2020Observed: 9.53 ft at 7:34AM Mar 29, 2020Observed: 9.42 ft at 8:21AM Mar 29, 2020Observed: 9.28 ft at 9:21AM Mar 29, 2020Observed: 9.15 ft at 10:21AM Mar 29, 2020Observed: 9.09 ft at 11:21AM Mar 29, 2020Observed: 9.05 ft at 12:22PM Mar 29, 2020Observed: 9.06 ft at 1:21PM Mar 29, 2020Observed: 9.02 ft at 2:34PM Mar 29, 2020Observed: 9.15 ft at 3:21PM Mar 29, 2020Observed: 9.18 ft at 4:21PM Mar 29, 2020Observed: 9.24 ft at 5:28PM Mar 29, 2020Observed: 9.37 ft at 6:21PM Mar 29, 2020Observed: 9.39 ft at 7:28PM Mar 29, 2020Observed: 9.34 ft at 8:21PM Mar 29, 2020Observed: 9.36 ft at 9:22PM Mar 29, 2020Observed: 9.36 ft at 10:21PM Mar 29, 2020Observed: 9.39 ft at 11:27PM Mar 29, 2020FMKA2(plotting HGIRZ) Graph Created (12:02AM Mar 30, 2020)ObservedLatest observed value: 9.39 ft at 11:27 PM AKDT 29-Mar-2020. Flood Stage is 16 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (AKDT)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Gauge readings not available during the winter months.

NOTE: Stage and discharge data do not meet quality standards of USGS gages.

NOTE: Forecasts are not available for the Fortymile River at Walker Fork. Only observed stages are available for this point.

Return to Area Map
Upstream Gauge - at South Fork Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 17
Flood Stage: 16
Action Stage: 15
Low Stage (in feet): -9999

Historic Crests

(P): Preliminary values subject to further review.

Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:12
KML Image
Gauge LocationGauge Map Marker
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 Collapse
If you notice any errors in the below information, please contact our Webmaster
21.59 Low spot on Taylor Highway near entrance into Walker Fork campground.
18 Road into Walker Fork campground becomes flooded.
17.66 High water mark from flooding in June of 2000.
17.05 Area around dumpster becomes flooded. Moderate flood stage.
16.86 Ground at registration area becomes flooded.
16 minor flood stage. Ground at "Campground Host" sign becomes inundated.
15 bankfull
Photos
(1) Bridge
(2) Downstream
(3) Upstream
(4) Fortymile River at Walker Fork looking upstream, Stage = 10.04 ft
(5) Fortymile River at Walker Fork looking downstream, Stage = 10.04 ft
About This Location Collapse

Latitude: 64.076111° N, Longitude: 141.630556° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 16 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 1730.61 ft 1746.61 ft 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 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
Disclaimer
Credits
Glossary
Privacy Policy
About Us
Career Opportunities