missouri-headwaters-state-park

Missouri Headwaters State Park is a confluence on Gallatin River, Montana.

It is fishable and launchable.

Gallatin meets the Madison and Jefferson to form the Missouri.

It is downstream of Logan Bridge.

Floats that end here: Gallatin Forks to Three Forks, from Gallatin Forks to Missouri Headwaters State Park, 12 miles; Logan Bridge to Missouri Headwaters State Park, from Logan Bridge to Missouri Headwaters State Park.

Sourced from 2 sites.

Sources: glaciertoyellowstone.com and The Perfect Fly Store (retrieved 2026-10-20).

Access, closures and rules change; check with the state agency before you go.