MONTANA FLOW REPORT

Last Updated: December 22, 2025

Montana's rivers are experiencing varied streamflow conditions, with several waterways reporting significant deviations from normal flows, which could influence recreational and ecological activities. Notably, the St. Mary River near Babb demonstrates an unusually high streamflow at 1480 cubic feet per second (cfs), which is nearly 400% of its typical flow, potentially hinting at flooding risks or excellent conditions for whitewater enthusiasts. However, caution is advised due to the rapid changes such conditions can bring. In contrast, the Beaverhead River near Twin Bridges is flowing at 222 cfs, showing a notable decrease of 24% from the norm, which could signal flow drought conditions in the area. This variability points to the need for river users to stay informed about current conditions, as they can impact access, safety, and aquatic habitats.

Some rivers like the Missouri, with 3930 cfs at Fort Benton, display a decrease in streamflow, suggesting mild drought conditions that may affect fishing and boating activities. Meanwhile, the Smith River near Ft. Logan surged by an extraordinary 404% in the last 24 hours to a flow of 127 cfs, raising concerns for rapid flow changes and the potential for flooding. Cities such as Missoula and Great Falls should monitor the Clark Fork and Missouri rivers, respectively, as they are vital to the region's waterways. Additionally, the Fisher River near Libby and the Yaak River near Troy show more than double the normal flow, indicating exceptionally vigorous currents that can attract thrill-seeking rafters but also pose heightened risks. As Montana's riverscape continues to evolve with these seasonal and abnormal trends, enthusiasts and communities along these rivers should remain vigilant and responsive to the changing conditions.

       



Montana has a varied climate and terrain that greatly affects its flow conditions. The state boasts of major rivers such as the Missouri, Yellowstone, and the Clark Fork, which drain into the Mississippi, Missouri, and Columbia Rivers, respectively. Montana also has a number of reservoirs/dams, such as the Fort Peck Dam and the Hungry Horse Dam, which serve as major power sources and water storage for the state. The state's hydrology is influenced by its mountainous terrain, which leads to high precipitation levels and generates snowpacks. These snowpacks, in turn, largely determine the state's flow conditions in the summer months. Montana's flow conditions are also affected by its climate, which is characterized by dry summers and cold winters. Overall, Montana's flow conditions are shaped by a mix of climatic and topographic factors, including watershed, snowpack, and precipitation.


       

Winter Storm Warnings

December 22 2025

Residents of Montana are urged to exercise extreme caution as a series of severe weather warnings are in effect across the state. An Avalanche Warning with a high danger on all slopes has been issued for the mountains near Island Park, West Yellowstone, and Cooke City, advising backcountry travelers to avoid steep slopes and remain vigilant for potential slides. Simultaneously, various Winter Weather Advisories are in place warning of mixed precipitation and snow across central and southwest Montana, including Golden Valley, Musselshell, and Northern Stillwater, with expectations of hazardous roads and slippery conditions. The cities of Billings, Custer, Laurel, and others along I-90, I-94, and other major roadways may face slick roads due to freezing rain. Heavy snow accumulation is anticipated in the Absaroka-Beartooth and Crazy Mountains, raising concerns for travelers and recreational activities. Citizens are encouraged to stay informed through local weather channels and prepare for disruptions to travel and outdoor plans.


Rafting & Kayaking

River Run Status Streamflow (CFS) Air Temp (F)
Alberton Gorge (St. John to Forrest Grove)
Class III to IV
33.44
Bear Creek to Essex
Class II to III+
RUNNABLE 445 55
Beartrap Canyon - Madison Dam to Route 84
Class III to IV
RUNNABLE 1030 46
Bible Run
Class III to IV
RUNNABLE 529 54
Big Creek to Glacier Rim
Class III- to III
RUNNABLE 1380 47
Border to Polebridge
Class II to II+
TOO LOW 432 45
Camp Baker to Eden Bridge
Class II to II+
RUNNABLE 1970 41
Essex to Moccasin Creek
Class II+
RUNNABLE 1290 49
Gardiner Town Run
Class III- to III+
RUNNABLE 1080 43
Glacier RIm to Blankenship Bridge and Confluence
Class II
RUNNABLE 4590 49
Missoula Town Run
Class II to II+
RUNNABLE 958 49
Moccasin Creek to West Glacier (John Stevens Canyon)
Class II+ to III+
RUNNABLE 4310 53
Moose to Storm Castle
Class III+ to IV+
RUNNABLE 308 51
Polebridge to Big Creek
Class II to III-
RUNNABLE 4590 49
Schafer Meadows to Bear Creek (Upper)
Class III+ to IV+
RUNNABLE 4310 53
West Glacier to Blankenship Bridge
Class II+ to III
RUNNABLE 4310 53
Yankee Jim Canyon (Joe Brown to Miner)
Class III to III+
RUNNABLE 1080 43
       
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