This is the most commonly run section of the Gallatin. Putting in at Moose flats campground and taking out at the Storm Castle Bridge provides floaters with nearly every rapid this river has to offer. Depending on time and flows many options are available to make the float shorter.
Everything above the 35mph bridge is CLIII at all flows. At high flows there is good play and a couple of big feeling wave trains. Below the bridge things step up a full grade regardless of flows. At low flows there are technical eddies, attainments and rock boofs. At high flows (4000+) there is lots of funny water, big wave trains and some big holes to miss (or hit). The less paddled section between the two storm castle accesses steps back down in difficulty but offers the only rapids separated from the road. This is the afterwork special for Bozeman and Big Sky paddlers.
| Glenn | |
| Class | III+ to IV+ |
| Current Flow |
279.0 CFS 12-04-2024 11:00 
View River Forecast |
| Recommended Flow |
Minimum: 300.0 Average: 2000.0 Maximum: 10000.0 |
| Typical Season |
Begins: March Ends: December |
| Recommended Use |
Kayaking: Yes Rafting: Yes Canoeing: Yes SUP: No Packrafting: No Fishing: Yes |
| Primary Gauge | Gallatin River near Gallatin Gateway MT |
| Length | 12.0 Mile(s) |
| Gradient | 33.0 FPM |
