The Smith River in Montana is a pristine waterway renowned for its scenic beauty and recreational opportunities. Originating in the Castle Mountains of central Montana, the river flows northward for approximately 110 miles before joining the Missouri River near Ulm. Its primary tributaries include Tenderfoot Creek, Sheep Creek, and Deep Creek. The crown jewel of the Smith River is the 59-mile permitted section from Camp Baker to Eden Bridge, managed as Smith River State Park. This stretch offers a multi-day float trip through a spectacular limestone canyon, with towering cliffs, lush forests, and abundant wildlife.

The river's difficulty is generally rated as Class I-II, suitable for intermediate paddlers, though some technical maneuvering is required around rocks and log jams at lower water levels. Floating season typically runs from mid-April through mid-July, with peak flows in late May to early June. Late summer and fall trips are possible but often require dragging boats through shallow sections.

The river supports a diverse ecosystem, including populations of brown and rainbow trout, black bears, elk, and bald eagles. Key landmarks along the float include notable rock formations like Devil's Dream and Sunset Cliffs, as well as numerous Native American pictograph sites. Designated boat camps are spaced along the river, offering primitive camping experiences amidst the rugged landscape.

Access to the permitted section is tightly controlled, with a competitive lottery system for launch dates. The put-in at Camp Baker is located about 27 miles north of White Sulphur Springs, while the take-out at Eden Bridge is approximately 40 miles southeast of Great Falls.

The Smith River holds significant cultural importance, with a history of use by indigenous peoples and early settlers. Today, it's prized for its exceptional fishing, particularly for brown trout, and its unspoiled natural beauty.

Safety considerations include proper food storage to avoid bear encounters, awareness of rapidly changing weather conditions, and the remote nature of the canyon with limited cell phone coverage. Floaters must be self-sufficient and practice Leave No Trace principles. The standard trip takes 3-5 days, allowing time to fish, explore side canyons, and enjoy the solitude of this remarkable river corridor.

With its combination of scenic grandeur, recreational opportunities, and controlled access, the Smith River float trip is considered one of the premier multi-day river experiences in the western United States.