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Hydrograph River at a Glance Download
Middle Fork Flathead River near West Glacier Stage (ft)Flow (cfs)Forecast: 2.47 ft 5:00AM Feb 20, 2017Forecast: 2.44 ft 11:00AM Feb 20, 2017Forecast: 2.42 ft 5:00PM Feb 20, 2017Forecast: 2.41 ft 11:00PM Feb 20, 2017Forecast: 2.4 ft 5:00AM Feb 21, 2017Forecast: 2.39 ft 11:00AM Feb 21, 2017Forecast: 2.39 ft 5:00PM Feb 21, 2017Forecast: 2.39 ft 11:00PM Feb 21, 2017Forecast: 2.43 ft 5:00AM Feb 22, 2017Highest Forecast: 2.5 ft 11:00AM Feb 22, 2017Highest Forecast: 2.5 ft 5:00PM Feb 22, 2017Forecast: 2.48 ft 11:00PM Feb 22, 2017Forecast: 2.47 ft 5:00AM Feb 23, 2017Forecast: 2.45 ft 11:00AM Feb 23, 2017Forecast: 2.44 ft 5:00PM Feb 23, 2017Forecast: 2.43 ft 11:00PM Feb 23, 2017Forecast: 2.42 ft 5:00AM Feb 24, 2017Forecast: 2.42 ft 11:00AM Feb 24, 2017Forecast: 2.41 ft 5:00PM Feb 24, 2017Forecast: 2.4 ft 11:00PM Feb 24, 2017Forecast: 2.39 ft 5:00AM Feb 25, 2017Forecast: 2.39 ft 11:00AM Feb 25, 2017Forecast: 2.38 ft 5:00PM Feb 25, 2017Forecast: 2.37 ft 11:00PM Feb 25, 2017Forecast: 2.36 ft 5:00AM Feb 26, 2017Forecast: 2.36 ft 11:00AM Feb 26, 2017Forecast: 2.35 ft 5:00PM Feb 26, 2017Forecast: 2.35 ft 11:00PM Feb 26, 2017USGS--Water Resources of the United StatesWGCM8(plotting HGIRG) Graph Created (1:30AM Feb 20, 2017)ObservedForecast (issued 11:36AM Feb 19)Latest observed value: 2.11 ft at 10:45 PM MST 15-Feb-2017. Flood Stage is 10 ft
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Tabular Data (UTC)
Tabular Data (MST)
XML Data
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Datum: Not Available
NOTE: Forecasts for the Middle Fork Flathead River near West Glacier are issued routinely year-round.
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Upstream Gauge - near Essex Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 18
Moderate Flood Stage: 14
Flood Stage: 10
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 36.46 ft on 06/09/1964
(2) 19.42 ft on 06/20/1975
(3) 13.01 ft on 05/20/1954
(4) 12.40 ft on 05/19/1991
(5) 12.40 ft on 05/23/1948
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(P): Preliminary values subject to further review.

Recent Crests
(1) 9.12 ft on 04/27/2012
(2) 11.23 ft on 05/19/2008
(3) 11.96 ft on 05/17/1997
(4) 9.42 ft on 06/09/1996
(5) 12.40 ft on 05/19/1991
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(P): Preliminary values subject to further review.

Low Water Records
(1) 1.06 ft on 12/16/1949
(2) 1.08 ft on 01/21/1940
(3) 1.08 ft on 01/03/1977
Zoom Level:16
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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.
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If you notice any errors in the below information, please contact our Webmaster
18 Flooding affecting low lying areas adjacent to the river will occur. Many roads will be inundated with flood water and become impassable.
14 Flooding to low lying areas adjacent to the river will occur. Roads and homes may experience flooding due to backwater.
10 Flooding to low lying areas adjacent to the river is possible. Flooding to homes and agricultural lands is also possible.
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Latitude: 48.495278° N, Longitude: 114.009167° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 10 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 3128.72 ft 3138.72 ft 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:

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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
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6633 Aviation Way
Missoula, MT 59808
(406) 329-4840
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Page last modified: 21-Dec-2016 10:36 PM
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