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Visit for access to new EXPERIMENTAL products and services from the National Water Center: National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook and the National Water Center Visualization Services, a suite of geospatial services depicting River Forecast Center and National Water Model information.

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Hydrograph River at a Glance Download
East Gallatin River below Bridger Creek near Bozeman Stage (ft)EGMM8(plotting HGIRG) Graph Created (6:38PM Feb 2, 2023)
About this graph
Tabular Data (UTC)
Tabular Data (MST)
XML Data
RSS Files
Datum: Not Available
NOTE: Forecasts are not available for the East Gallatin River below Bridger Creek near Bozeman. Only observed stages are available for this point.
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Downstream Gauge Downstream Gauge - at Logan
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 5
Flood Stage: 4.5
Action Stage: 4
Low Stage (in feet): -9999

Historic Crests
(1) 5.60 ft on 06/11/2004
(2) 5.43 ft on 05/25/2008
(3) 5.15 ft on 05/12/1976
(4) 4.78 ft on 05/25/2011
(5) 4.50 ft on 05/20/2009
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 3.73 ft on 05/02/2012
(2) 4.78 ft on 05/25/2011
(3) 4.38 ft on 06/05/2010
(4) 4.50 ft on 05/20/2009
(5) 5.43 ft on 05/25/2008
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

For more information on your flood risk go to

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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
5 Some homes in vicinity of Outlaw Country Subdivision, Stonegate Subdivision, Springhill Park Subdivision, Manley and McIlhattan Roads neighborhood, and Farm View Lane neighborhood have water in yards. E Kagy Blvd may have water On Road in vicinity of Rouse and Black Rds. Riverside Country Club and Bridger Creek Golf Course have some water on golf courses. Bozeman Creek near Lamme and Rouse may be out of banks.
4.7 Flooding of driveways, pastures and barrow ditches. Nelson Road has water on it in 2 to 3 locations. Minor flooding of Milesnick Ranch grazing area. Minor flooding near Hamilton Road and Spaulding Bridge Road.
4.59 Minor flooding in vicinity of Penwell Bridge.
4.5 Flooding into pastures near Dry Creek Road. Stream bankfull near Penwell Bridge.
4.3 Flooding in vicinity of Swamp Road.
(1) East Gallatin River near Bozeman looking downstream
(2) East Gallatin River near Bozeman looking upstream
(3) East Gallatin River near Bozeman looking upstream
About This Location Collapse

Latitude: 45.725556° N, Longitude: 111.068611° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 4.5 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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks

Current/Historical Observations:

Additional Information Collapse
This gauge site for the East Gallatin River has been discontinued. A new gauge site has been installed.
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Hydrologic Resources Additional Resources
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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
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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