Flathead - Buffalo Rapids: Kerr Dam to County Road Bridge

Flathead, Montana, US


Buffalo Rapids: Kerr Dam to County Road Bridge

Usual Difficulty III+ (for normal flows)
Length 8 Miles

Rafting on Buffalo Rapids!

Rafting on Buffalo Rapids!
Photo taken 03/22/18

Gauge Information

Name Range Difficulty Updated Level
Flathead River near Polson MT
usgs-12372000 2000 - 50000 cfs III+ 00h47m 10400 cfs (running)

River Description

The Flathead river below Kerr Dam, known as the Lower Flathead or Buffalo Rapids, is a reasonably safe big river with a vastly changing flow throughout the year. The water is aquamarine and clear, and the scenery features some cool pale hoodoos carved into the conglomerate canyon walls. The peak of run off can bring water levels as high as 60,000 CFS and late august flows can dwindle down near 3,500 with average winter flow of 7-12,000 in between. The river is dam controlled and protected so there is never a danger of log jams or debris. Kerr dam is a top spill dam so we get the warmest water off the top for a much warmer river than the rest of western Montana, especially in early fall. Big run-off years with water exceeding 50,000 can be tricky with a few new rapids showing up and the entire river can be pretty squirrely. This is an 8 mile stretch, the first 2 miles are pretty flat followed by 4 miles of rapids(drop pool), and 2 more miles of flat water after.

Logistics: Turn off of HWY 93 in Polson onto 1st street east heading south go 5 blocks then turn right onto 7th ave west this road will turn into Kerr dam rd. In 2.8 miles turn right to stay on Kerr dam road and follow the sign for Kerr dam. Do not turn right into the scenic overlook keep driving and you will wind down a hillside road into dam town there will be a pull off to the left with a path to the river this will be put in. Getting to take out go back up the hill and make a right turn onto Kerr dam rd there will be a lot of turns just keep right until you get to Buffalo Bridge rd(dirt rd). Follow this road until you cross Buffalo bridge and there will be a parking lot and boat launch immediately on the right.

Commercial rafting is available through Flathead Raft Company. 

StreamTeam Status: Not Verified
Last Updated: 2018-03-22 19:15:51

Rafting on Buffalo Rapids!

Detail Trip Report  Rafting on Buffalo Rapids!   @Flathead Buffalo Rapids: Kerr Dam to County Road Bridge, MT(104.52KB .jpeg)

Gauge Information

We have no additional information about how various flows affect runnability (or playability) of this section of river. If you can provide additional information, please either directly contact the StreamTeam member for this reach, or add a 'comment' or a 'report' with your information to help out your fellow boaters.

Gauge Information

Name Range Difficulty Updated Level
Flathead River near Polson MT
usgs-12372000 2000 - 50000 cfs III+ 00h47m 10400 cfs (running)

RangeWater LevelDifficultyComment
2000 -50000 cfs barely runnable-high runnable III+

Report - Reports of Flathead Buffalo Rapids: Kerr Dam to County Road Bridge and related gauges

Reports give the public a chance to report on river conditions throughout the country as well as log the history of a river.


When River/Gauge Subject Level Reporter
262d10h23m /Flathead-Kerr Dam to County Road Bridge [MT] Rafting on Buffalo Rapids! n/a Kevin Colburn



User Comments

Users can submit comments.

No Comments

Rapid Summary

Mile Rapid Name Class Features (Legend)
2.3The LedgeIII
3.6Buffalo IV

Rapid Descriptions

The Ledge (Class III, Mile 2.3)

Start of mile 3, during high water this rapid is the smallest on the river and the run is far left to center however once the river drops below 10,000 this can become the largest wave on the river and the run is center right look out for park rock at the end of this rapid on the right side.

Pinball (Class III, Mile 2.9)

This rapid at medium water levels is ran far river left split the V and hold on there are 2 big hits right off then 1 last big hit 150 yards down stream. Lower water levels a 4 foot water fall develops far river left for better hits. High water the run is center right with a huge wave at the bottom called My Little Pony(47,000+)

Eagle (Class III, Mile 3.2)

Eagle is an amazing rapid very straight forward with one huge hit to start it off followed by a great roller coaster set of waves. The higher the water the longer the wave train gets. If you end up with any swimmers in Eagle or flip try to get recovered quickly the next rapid is the biggest and you want a good set up for it. There is a pullout river left with a trail that goes up and to the right that leads to a great scout spot for Buffalo.

Buffalo (Class IV, Mile 3.6)

The largest wave in Montana!!! Make sure to hit the scout spot river left after eagle. There are two main channels here divided by a large rock island the best hits and safest line is always Left channel, it is highly advisable to not run right channel. The rapid is broken up into 2 sections there is Upper Buff which spans half the river and usually stands 6-10 feet tall depending on surges then the river moves left and banks right into Lower Buff, this wave can be up to 14 feet tall depending on surges with a decent flip chance. low water levels Lower Buff becomes more of a hole so be careful with it. Higher water levels Upper Buff can disappear that is usually 30,000+

Do more than just check gauges; join over 5,000 AW members today.


Join or Renew

Or, consider donating



General Nonmember Message

Associated News

North Fork Flathead (MT) Gets New Protections
March 10, 2010

 Buffalo Rapids: Kerr Dam to County Road Bridge, Flathead Montana, US (mobile)