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This probabilistic forecast is issued by the Missouri Basin River Forecast Center.
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About this graph
Forecasts for the Gallatin River near Gallatin Gateway 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 Logan
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 7.5
Moderate Flood Stage: 7
Flood Stage: 6
Action Stage: 5
Low Stage (in feet): -9999

Historic Crests
(1) 7.38 ft on 06/17/1974
(2) 6.71 ft on 06/02/1997
(3) 6.70 ft on 06/13/2022
(4) 6.51 ft on 06/30/2011
(5) 6.50 ft on 06/06/1991
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 6.70 ft on 06/13/2022
(2) 5.65 ft on 06/01/2018
(3) 5.17 ft on 06/05/2012
(4) 6.51 ft on 06/30/2011
(5) 5.20 ft on 06/05/2010
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 0.68 ft on 01/19/1935
(2) 0.88 ft on 12/15/1987
KML Image
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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
7.2 Small bridge near gallatin gateway and a few homes west of town are beginning to flood.
7.1 Water flows over road connecting two bridges over gallatin river. Three forest service campgrounds flood, including the one at squaw creek.
7 Minor roads in gallatin gateway covered with water.
6.3 Water flows over the axtell and irwin bridges.
6.1 Flooding of the lowlands along the gallatin river.
6 Water flows over roads as well as several smalller bridges. Several forest service campgrounds as well as some home west of town begin to flood.
5 Gallatin river on west side of gallatin gateway can come out of banks at mill road near where the road crosses the river. Water may work into area yards and fields, and may encroach onto mill road.
(1) Looking upstream from gauge house
(2) Looking downstream from gauge house

Other Real-time and/or Archive Data Sources:

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
Great Falls Weather Forecast Office
5324 Tri-Hill Frontage Rd
Great Falls, MT 59404-4933
(406) 453-2081
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Page last modified: 2-Nov-2020 7:28 PM
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