Difficulty IV-V
Length 2 Miles
Gauge N/A
Flow Range
Reach Info Last Updated 11/12/2019 7:03 pm

River Description

The standard Hyalite Creek run is found alongside the winding road up to Hyalite Reservoir just South of Bozeman. The numerous turnouts provide plenty of options for put-ins and take-outs as well as allowing for a very thorough scout of the entire section. Just make sure you take out well above the very low bridge near the bottom. Proper flows are dependent on the upstream dam release and if it looks boney and scrapey, it is. You could leave half your boat behind on a low-water run on this stretch. When flows are up, however, the action is fast paced and exciting.
The nonstop class-IV boulder rapids are spiced up with a few bigger drops laced throughout while the constricted riverbed forces paddlers to make quick decisions and strong moves to avoid pitons and broaches. At just over 200 fpm, with no slides or substantial falls, the continuous, congested boulder gardens are an excellent preparation for the technical mountain rivers found in both the Beartooths and central Idaho.
Fun roadside creeks like Hyalite are ideal for stringing together multiple runs, and once you are familiar with the lines, you can bomb this stretch in under 20 minutes. If you come off this creek feeling hungry for something a little more stout, head up above the reservoir for a taste of some fine Montana micro-creeking.
Lat/longitude coords are a rough approximation, to put you in the ballpark.

Rapid Descriptions


No Gage

Gage Descriptions

By Sight

Directions Description

We have no additional detail on this route. Use the map below to calculate how to arrive to the main town from your zipcode.

No Accident Reports



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Montana National Forest Proposes New River Protections

Kevin Colburn

The Custer-Gallatin National Forest has proposed new protections for 18 outstanding streams in Montana through their forest planning process. The Forests propose to manage these streams as “eligible” for Wild and Scenic designation, along with 12 other rivers and streams previously determined to be eligible. The Forests’ analysis is solid in our view and merits appreciation from paddlers, though there is room for a bit of improvement. They are accepting comments through August 12, 2017.

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Appeal Challenging Montana Navigability Is Denied

Jason Robertson

On May 28 the U.S. Supreme Court denied an appeal by Mountain States Legal Foundation who filed a lawsuit in June 2001 alleging the 1985 Montana Stream Access Law violated their rights under the U.S. Constitution to regulate who floated over their land.

The decision thereby protects Montana's Stream access law and public rights of navigation throughout the State.

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River Recreationists Win Big in Montana!

Jason Robertson

The Missoulian newspaper reported on January 5th, 2001 that U.S. District Judge Charles C. Lovell dismissed a case brought by the Mountain States Legal Foundation challenging public recreational rights on Montana’s rivers and streams. This is a huge win for boaters and fishermen!

Matt Muir


David Schroeder


Revision #Revision DateAuthorComment
1198509 10/30/10 Matt Muir Added ROUGH lat/lon coords, abstract, and link to upper reach.
1194435 03/23/07 David Schroeder n/a
1213881 11/12/19 Matt Muir updated image position
1198510 10/30/10 Matt Muir Fixed link.