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Hydrograph River at a Glance Download
Fortymile River at Mosquito Fork Stage (ft)Flow (kcfs)Observed: 13.44 ft at 12:25PM May 27, 2020Observed: 13.51 ft at 1:25PM May 27, 2020Observed: 13.59 ft at 3:25PM May 27, 2020Observed: 13.59 ft at 4:25PM May 27, 2020Observed: 13.54 ft at 5:25PM May 27, 2020Observed: 13.54 ft at 6:33PM May 27, 2020Observed: 13.53 ft at 7:26PM May 27, 2020Observed: 13.63 ft at 8:25PM May 27, 2020Observed: 13.59 ft at 9:26PM May 27, 2020Observed: 13.68 ft at 10:25PM May 27, 2020Observed: 13.59 ft at 11:26PM May 27, 2020Highest Observation: 13.69 ft at 12:25AM May 28, 2020Observed: 13.6 ft at 1:26AM May 28, 2020Observed: 13.58 ft at 2:25AM May 28, 2020Observed: 13.51 ft at 3:26AM May 28, 2020Observed: 13.66 ft at 4:25AM May 28, 2020Observed: 13.57 ft at 5:25AM May 28, 2020Observed: 13.61 ft at 6:26AM May 28, 2020Observed: 13.61 ft at 7:25AM May 28, 2020Observed: 13.57 ft at 8:26AM May 28, 2020Observed: 13.61 ft at 9:32AM May 28, 2020Observed: 13.48 ft at 10:26AM May 28, 2020Observed: 13.48 ft at 11:25AM May 28, 2020Observed: 13.45 ft at 12:25PM May 28, 2020Observed: 13.48 ft at 1:33PM May 28, 2020Observed: 13.55 ft at 2:25PM May 28, 2020Observed: 13.49 ft at 3:26PM May 28, 2020Observed: 13.46 ft at 4:25PM May 28, 2020Observed: 13.42 ft at 5:26PM May 28, 2020Observed: 13.39 ft at 6:25PM May 28, 2020Observed: 13.38 ft at 7:25PM May 28, 2020Observed: 13.37 ft at 8:25PM May 28, 2020Observed: 13.3 ft at 9:25PM May 28, 2020Observed: 13.29 ft at 10:26PM May 28, 2020Observed: 13.34 ft at 11:26PM May 28, 2020Observed: 13.29 ft at 12:25AM May 29, 2020Observed: 13.21 ft at 1:25AM May 29, 2020Observed: 13.21 ft at 2:26AM May 29, 2020Observed: 13.18 ft at 3:26AM May 29, 2020Observed: 13.2 ft at 4:25AM May 29, 2020Observed: 13.26 ft at 5:26AM May 29, 2020Observed: 13.25 ft at 6:25AM May 29, 2020Observed: 13.21 ft at 7:25AM May 29, 2020Observed: 13.19 ft at 8:25AM May 29, 2020Observed: 13.23 ft at 9:25AM May 29, 2020Observed: 13.16 ft at 10:32AM May 29, 2020Observed: 13.19 ft at 11:25AM May 29, 2020Observed: 13.16 ft at 12:32PM May 29, 2020Observed: 13.17 ft at 1:25PM May 29, 2020Observed: 13.14 ft at 2:25PM May 29, 2020Observed: 13.09 ft at 3:25PM May 29, 2020Observed: 13.09 ft at 4:25PM May 29, 2020Observed: 13.1 ft at 5:26PM May 29, 2020Observed: 13.01 ft at 6:25PM May 29, 2020Observed: 13.03 ft at 7:26PM May 29, 2020Observed: 13.06 ft at 8:25PM May 29, 2020Observed: 13.04 ft at 9:26PM May 29, 2020Observed: 13.03 ft at 10:25PM May 29, 2020Observed: 13.06 ft at 11:33PM May 29, 2020Observed: 13 ft at 12:25AM May 30, 2020Observed: 13.07 ft at 1:25AM May 30, 2020Observed: 13.03 ft at 2:25AM May 30, 2020Observed: 13.04 ft at 3:25AM May 30, 2020Observed: 12.99 ft at 4:25AM May 30, 2020Observed: 13.03 ft at 5:25AM May 30, 2020Observed: 13.04 ft at 6:26AM May 30, 2020Observed: 12.99 ft at 7:26AM May 30, 2020Observed: 13.03 ft at 8:25AM May 30, 2020Observed: 12.98 ft at 9:26AM May 30, 2020Observed: 12.93 ft at 10:25AM May 30, 2020Observed: 12.87 ft at 11:26AM May 30, 2020Observed: 12.9 ft at 12:25PM May 30, 2020Observed: 12.84 ft at 1:25PM May 30, 2020Observed: 12.85 ft at 2:32PM May 30, 2020Observed: 12.9 ft at 3:25PM May 30, 2020Observed: 12.84 ft at 4:25PM May 30, 2020Observed: 12.87 ft at 5:25PM May 30, 2020Observed: 12.79 ft at 6:25PM May 30, 2020Observed: 12.82 ft at 7:26PM May 30, 2020Observed: 12.88 ft at 8:25PM May 30, 2020Observed: 12.84 ft at 9:26PM May 30, 2020Observed: 12.84 ft at 10:25PM May 30, 2020Observed: 12.83 ft at 11:33PM May 30, 2020Observed: 12.88 ft at 12:25AM May 31, 2020Observed: 12.84 ft at 1:39AM May 31, 2020Observed: 12.85 ft at 2:25AM May 31, 2020Observed: 12.82 ft at 3:26AM May 31, 2020Observed: 12.81 ft at 4:26AM May 31, 2020Observed: 12.82 ft at 5:25AM May 31, 2020Observed: 12.82 ft at 6:26AM May 31, 2020Observed: 12.83 ft at 7:25AM May 31, 2020Observed: 12.84 ft at 8:26AM May 31, 2020Observed: 12.82 ft at 9:25AM May 31, 2020Observed: 12.79 ft at 10:26AM May 31, 2020Observed: 12.76 ft at 11:25AM May 31, 2020Observed: 12.76 ft at 12:25PM May 31, 2020Observed: 12.75 ft at 1:25PM May 31, 2020Observed: 12.75 ft at 2:25PM May 31, 2020Observed: 12.74 ft at 3:26PM May 31, 2020Observed: 12.74 ft at 4:25PM May 31, 2020Observed: 12.7 ft at 5:26PM May 31, 2020Observed: 12.73 ft at 6:25PM May 31, 2020Observed: 12.74 ft at 7:25PM May 31, 2020Observed: 12.75 ft at 8:33PM May 31, 2020Observed: 12.79 ft at 9:25PM May 31, 2020Observed: 12.8 ft at 10:25PM May 31, 2020Observed: 12.79 ft at 11:25PM May 31, 2020Observed: 12.8 ft at 12:25AM Jun 01, 2020Observed: 12.79 ft at 1:25AM Jun 01, 2020Observed: 12.79 ft at 2:25AM Jun 01, 2020Observed: 12.81 ft at 3:26AM Jun 01, 2020Forecast: 12.91 ft 10:00AM Jun 01, 2020Forecast: 13.07 ft 4:00PM Jun 01, 2020Forecast: 13.24 ft 10:00PM Jun 01, 2020Forecast: 13.42 ft 4:00AM Jun 02, 2020Highest Forecast: 13.51 ft 10:00AM Jun 02, 2020Forecast: 13.48 ft 4:00PM Jun 02, 2020Forecast: 13.42 ft 10:00PM Jun 02, 2020FMMA2(plotting HGIRZ) Graph Created (4:17AM Jun 1, 2020)ObservedForecast (issued 12:59PM May 31)Latest observed value: 12.81 ft at 3:26 AM AKDT 1-Jun-2020. Flood Stage is 24 ft
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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 for the Fortymile River at Mosquito Fork are issued routinely during the warm season, and as needed at other times of the year.

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Downstream Gauge Downstream Gauge - at West Fork
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 27
Flood Stage: 24
Action Stage: 22
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:11
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
28.18 Cement pad in front of outhouse in parking lot gets covered with water.
26.8 Water inundates middle of parking lot. Moderate flood stage
24 Water covers right downstream low spot in private road along stream. Minor flood stage.
22.44 Right upstream bankfull.
17.5 Left upstream bankfull near parking lot.
16.37 High water mark on left upstream bank June 2000.
Photos
(1) Bridge
(2) Downstream
(3) Upstream
(4) Fortymile River at Mosquito Fork looking upstream, Stage = 12.81 ft
(5) Fortymile River at Mosquito Fork looking downstream, Stage = 12.81 ft
About This Location Collapse

Latitude: 64.066111° N, Longitude: 141.997222° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 24 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 1608.55 ft 1632.55 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
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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
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Page last modified: 1-Mar-2019 12:31 AM
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