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This probabilistic forecast is issued by the Northwest River Forecast Center.
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About this graph
Forecasts are not available for the Flathead River near Polson. Only observed stages are available for this point.
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Upstream Gauge - at Columbia Falls Upstream Gauge Downstream Gauge Downstream Gauge - at Perma
Zoom Level:16
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 18
Action Stage: 0
Low Stage (in feet): -9999

Historic Crests
(1) 21.00 ft on 06/01/1894
(2) 19.30 ft on 05/26/1980
(3) 19.15 ft on 06/06/1948
(4) 17.99 ft on 06/12/1964
(5) 17.99 ft on 06/16/1951
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 16.89 ft on 06/24/2022
(2) 11.84 ft on 06/01/2021
(3) 14.70 ft on 06/08/2020
(4) 15.50 ft on 05/30/2018
(5) 15.70 ft on 06/20/2014
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
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
18 Flooding to agricultural land in the vicinity of Dixon. Cattle may be stranded in low lying areas next to the river.

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
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