Missouri Headwaters State Park
| Missouri Headwaters State Park | |
|---|---|
Confluence of the Madison River and Jefferson River at the starting point of the Missouri River | |
Location in Montana | |
| Location | Gallatin County, Montana, United States |
| Nearest city | Three Forks, Montana |
| Coordinates | 45°55′15″N 111°29′53″W / 45.9207°N 111.498°W |
| Area | 532 acres (215 ha) |
| Elevation | 4,049 feet (1,234 m) |
| Designation | Montana state park |
| Established | 1947 |
| Visitors | 33,436 (in 2023) |
| Administrator | Montana Fish, Wildlife & Parks |
| Website | Missouri Headwaters State Park |
Three Forks of the Missouri | |
| Location | Gallatin County, Montana |
| Area | 1,500 acres (610 ha) |
| Built | 1805 |
| NRHP reference No. | 66000433 |
| Significant dates | |
| Added to NRHP | October 15, 1966 |
| Designated NHL | October 9, 1960 |
Missouri Headwaters State Park is a public recreation area occupying 535 acres (217 ha) at the site of the official start of the Missouri River. The park offers camping, hiking trails, hunting, and water-related activities. It is located on Trident Road northeast of Three Forks, Montana at an elevation of 4,045 feet (1,233 m). The park includes the Three Forks of the Missouri National Historic Landmark, designated in 1960 because the site is one where the Lewis and Clark Expedition camped in 1805.