Missouri-Yellowstone Confluence
Confluence Overlook near Fort Union, Williston, ND
Williston, ND
The place where the clear Yellowstone joins the wide Missouri, a river crossroads that shaped the whole history of the upper plains.
At the far northwest corner of North Dakota, the Yellowstone River, running clear off the plains and mountains of Montana, meets the wider, muddier Missouri in a broad junction of channels, sandbars, and cottonwood bottoms. This confluence was for centuries a crossroads of the Northern Plains, a natural landmark on the great river highway that carried native nations, explorers, and traders across the West.
The Lewis and Clark expedition reached this junction in the spring of 1805 and recognized at once that it would be an important place, noting its promise in their journals. In the decades that followed, the confluence became the heart of the upper Missouri fur trade, and the reconstructed Fort Union trading post still stands beside it. Today it is a quiet, historic scene where the two rivers still run together as they always have.
What Travelers Love
- Standing where two of the great rivers of the West flow together
- The broad, quiet scene of cottonwood bottoms, channels, and sandbars
- Following in the footsteps of Lewis and Clark, who marked this spot
- The pairing with the reconstructed Fort Union and its interpretive center
Worth Knowing
- The confluence sits in remote country near the Montana border, so plan your route and fuel
- It pairs naturally with Fort Union and the confluence interpretive center nearby
- River banks and bottoms can be muddy and buggy in warm months, so dress accordingly
- This is open, exposed river country, so bring sun protection and water for any walking
Learn about Missouri-Yellowstone Confluence
A landmark of the native plains
Long before any map named these waters, the confluence was known to the peoples of the upper Missouri, among them the Mandan, Hidatsa, and Arikara, today the MHA Nation, and the Assiniboine and other tribes who ranged the northern grasslands. The rivers were the roads of their world, and this junction was a place of travel, trade, and gathering.
The tribes of this country are living nations whose ties to the Missouri and its tributaries continue today. Their long presence here is the deepest layer of the confluence's story, older by far than the explorers and traders who followed the same rivers west.
Lewis and Clark's crossroads
When the Corps of Discovery came up the Missouri in April of 1805, the confluence with the Yellowstone struck them as a place of consequence, a natural site for future trade and settlement, and they paused to survey and celebrate it. Among the party was Sakakawea, the young Shoshone woman from the Hidatsa villages downriver, whose presence and knowledge helped carry the expedition through the western country.
Following the same river junction today, you stand where the explorers stood, looking out over the meeting of the two rivers. Little of the immediate scene has changed: the cottonwoods, the sandbars, the wide sky over the water are much as the expedition described them.
The fur trade and Fort Union
The strategic value the explorers saw was soon realized. In the 1820s Fort Union rose near the confluence and grew into the most important fur-trade post on the upper Missouri, where the tribes of the region traded buffalo robes and furs for manufactured goods brought upriver. It was a bustling meeting ground of cultures for decades, until the collapse of the buffalo trade brought its era to an end.
The reconstructed Fort Union stands beside the confluence now, its whitewashed walls and bourgeois house rebuilt on the original site, and a nearby interpretive center tells the fuller story. Together with the river junction itself, they make this one of the most historically layered stops in North Dakota.
Wildlife and the seasons
The confluence bottoms are rich with life. Bald eagles, pelicans, herons, and geese work the channels and sandbars, deer and beaver move through the cottonwoods, and the river draws waterfowl in great numbers during migration. It is a reminder that this was prized wildlife country long before it was prized for its history.
Summer is warm and the fullest season for exploring the confluence, Fort Union, and the interpretive center together. Spring and fall bring quieter days and often clearer air, good times to walk the river country and watch the birds. Winter is cold and still, the rivers slowed and the wide land at its starkest and most beautiful.
Closest Boutels
The closest Boutel™ stays, so you can turn this stop into an overnight. Each is a place we chose through independent editorial review, never a paid placement.
Details
Williston, ND
Frequently asked questions
What is the Missouri-Yellowstone Confluence?
The Missouri-Yellowstone Confluence, in northwestern North Dakota near the Montana border, is the historic and scenic place where the great Yellowstone River joins the mighty Missouri River, a spot of natural beauty and deep historical significance. Here the waters of the two important rivers meet in a wide, scenic river landscape that was noted by the Lewis and Clark expedition and long important to the Native peoples of the region. The confluence area offers views of the meeting rivers, wildlife, and a sense of the vast river country of the northern plains, along with nearby historic sites. A scenic and historic river landmark, it delights visitors. With its meeting rivers, the confluence offers a compelling destination in North Dakota.
Why is the Missouri-Yellowstone Confluence historically important?
The Missouri-Yellowstone Confluence is historically important as a significant landmark on the Missouri River, noted by the Lewis and Clark expedition during their journey, long important to the Native peoples of the region, and later a key point in the fur trade, with the great Fort Union established nearby. The meeting of the two major rivers made it a natural crossroads of travel, trade, and history on the northern plains. The confluence and its nearby historic sites tell this story. Understanding this history enriches a visit to the Missouri-Yellowstone Confluence in North Dakota.
What can you do at the Missouri-Yellowstone Confluence?
You can take in views of the place where the Yellowstone River joins the Missouri, watch for wildlife, visit the nearby interpretive center and historic sites including Fort Union and old Fort Buford, and appreciate the scenic and historic river landscape. The meeting of the rivers, the scenic views, the wildlife, and the nearby historic sites are the draws, making it a rewarding stop for history and nature lovers. The confluence itself and its history are the highlights. With its rivers and history, the confluence offers a rewarding experience in North Dakota.
When is the best time to visit the Missouri-Yellowstone Confluence?
The mild months of late spring through early fall are the most pleasant for enjoying the confluence, the river views, and the nearby historic sites, with comfortable weather and fuller access to the interpretive center and forts in the warm season. Because some sites and programs are seasonal, checking current information before you go is wise. For the most pleasant visit and fullest access, aim for late spring through early fall at the Missouri-Yellowstone Confluence in North Dakota.
What is near the Missouri-Yellowstone Confluence?
The Missouri-Yellowstone Confluence is in northwestern North Dakota near the Montana border, within reach of the Missouri-Yellowstone Confluence Interpretive Center, the Fort Union Trading Post, old Fort Buford, Lewis and Clark State Park, and the routes across northwestern North Dakota. That makes the confluence a compelling stop to combine with the interpretive center, Fort Union, and the other attractions of northwestern North Dakota on a visit to the state.
Nearby
Fort Union Trading Post National Historic Site
1.1 miles away
Fort Union Trading Post: 24 miles southwest of Williston off ND-1804, on the North Dakota-Montana border. Free admission.
Missouri-Yellowstone Confluence Interpretive Center
3.5 miles away
Missouri-Yellowstone Confluence Interpretive Center: off ND-1804 southwest of Williston, right beside Fort Buford. Admission may apply in season.
MonDak Heritage Center
19 miles away
Out on the North Dakota line, where most travelers are just passing through the oil country, Sidney keeps a museum worth the stop.