Missouri Headwaters State Park
🏆 Official Guide: Missouri Headwaters State Park — The exact spot where the Jefferson, Madison, and Gallatin rivers converge to form the Missouri River — a National Historic Landmark near Three Forks, Montana, explored by Lewis & Clark in 1805.
Missouri Headwaters State Park preserves one of America’s most significant geographical landmarks — the Three Forks of the Missouri, where the Jefferson, Madison, and Gallatin rivers merge to create the mighty Missouri River. Captain Meriwether Lewis and William Clark arrived here on July 25, 1805, naming the three tributaries after President Thomas Jefferson, Secretary of State James Madison, and Secretary of the Treasury Albert Gallatin.
Visitor Information
| Detail | Information |
|---|---|
| Location | 1585 Trident Road, Three Forks, MT |
| Season | Year-round |
| Campsites | 17 sites + 1 rental tipi |
| Admission | Montana State Parks pass required |
| Designation | National Historic Landmark |
Lewis & Clark History
The Three Forks was a critical decision point for the Lewis & Clark Expedition. The captains spent several days here in July 1805, exploring each fork to determine which led toward the Continental Divide and the Pacific Ocean. They correctly chose the Jefferson River. The site also holds deep significance for the Shoshone, Blackfeet, Flathead, and Crow nations — it was a gathering place, hunting ground, and crossroads for thousands of years before European contact.
Activities
| Activity | Details |
|---|---|
| Hiking | Trails to Fort Rock overlook — panoramic confluence views |
| Fishing | Blue-ribbon trout waters — rainbow, brown trout |
| Camping | 17 sites + tipi rental, vault toilets, year-round |
| Kayaking/Canoeing | Paddle the confluence — launch access available |
| History/Interpretive | Lewis & Clark exhibits, summer speaker series |
| Bird Watching | Eagles, osprey, pelicans, herons |
Fort Rock Overlook
A short but rewarding hike climbs Fort Rock — a limestone bluff that was likely used as a defensive position by Native Americans. From the top, you get a commanding 360-degree view of the three rivers merging below and the surrounding Gallatin Valley with the Bridger and Tobacco Root mountain ranges beyond.
Getting There
From I-90: Take Exit 278 at Three Forks, head north on MT-286 for about 3 miles. The park is well-signed. From Bozeman: approximately 30 minutes west via I-90.
Frequently Asked Questions
What rivers form the Missouri at this park?
The Jefferson, Madison, and Gallatin rivers converge at Missouri Headwaters State Park to form the Missouri River. Lewis and Clark named all three tributaries in July 1805 — after President Jefferson, Secretary of State Madison, and Secretary of the Treasury Gallatin.
Can I camp at Missouri Headwaters?
Yes. The park has 17 campsites suitable for tents and small RVs, plus a unique rental tipi. Facilities include picnic tables, fire rings, and vault toilets. The campground is open year-round. No backcountry camping is permitted.
Is the fishing good at Missouri Headwaters?
Excellent. The confluence area offers blue-ribbon trout fishing for rainbow and brown trout. The three tributaries and the newly formed Missouri River provide diverse water conditions. A Montana fishing license is required.
What is Fort Rock?
Fort Rock is a limestone bluff within the park that offers the best overlook of the three-river confluence. A short hiking trail leads to the top, where you get 360-degree views of the merging rivers and surrounding mountain ranges. It was historically used as a defensive position by Native American tribes.
