Missouri Headwaters State Park

Quick Facts

Missouri Headwaters State Park


(406) 994-4042

Map Directions

Things To Do


Camp where Lewis and Clark stayed in 1805! This park encompasses the confluence of the Jefferson, Madison and Gallatin Rivers. The Lewis and Clark Expedition anticipated this important headwaters all the way up the Missouri River in 1804 and 1805. Today, the location of the headwaters is the center of a 506-acre state park, and visitors will find that the scenery which Lewis and Clark first encountered in 1805 has changed very little. An easy three-mile drive off Interstate 90 at Three Forks, this park provides opportunities for river floating, picnicking, bicycling, hiking, interpretive programs, photography and fishing. The Saturday night speaker series showcases top notch presenters for your learning enjoyment. Within the boundaries of this scenic park the Jefferson, Madison, and Gallatin rivers merge to form the 2,300 mile Missouri River. The Missouri Headwaters area was a geographical focal point important to early Native Americans trappers, traders and settlers. The park provides a 23 site campground, picnic areas, foot trails to points of interest, and interpretive displays of the area's cultural and natural history.

Map of Missouri Headwaters (MT)

Latitude, Longitude: 45.923991, -111.498442



  • Boating

    Explore the three forks area by boat! Be aware that the next takout is at Fairweather FAS approximately 8 miles downstream. Both motorized and non-motorized boats are permitted. A concrete ramp is provided for day-use only.

  • Bicycling

    Explore the area by bike on designated roads and trails.

  • Camping

    The park provides a 23 site campground with both tent and RV sites, group sites, and a tipi available for rental. Please pack out all your trash.

  • Fishing

    Fishing is a popular pastime for visitors to the park.

  • Hiking

    Approximately 4 miles of walking trails lead visitors through open meadows, along rivers and onto vista points.

  • Historic Sites

    Interpretive Rangers can assist with questions and guide visitors to points of interest within the park. A series of programs are presented each Saturday evening, June through August, on topics ranging from Native American culture, Lewis & Clark, and Montana history. Programs are held at the picnic area of the park starting at 7:00 pm.

  • Picnicking

    A picnic area includes tables, fire rings and grills. Please pack out all your trash.

  • RVing

    The campground includes RV sites, but there are no hookups or dump stations. Please pack out all your trash.



4 miles northeast of Three Forks, off of Hwy 205, then onto Hwy 286.

Phone Numbers


(406) 994-4042