Fort Buford was a former United States Army base located at the confluence of the Missouri and Yellowstone Rivers in the state of North Dakota. The Missouri River is a tributary of the Mississippi River in the United States. ... The Yellowstone River, shown highlighted The Yellowstone River is a tributary of the Missouri, approximately 671 mi (1,080 km long), in the western United States. ... Official language(s) English Capital Bismarck Largest city Fargo Area Ranked 19th - Total 70,762 sq mi (183,272 km²) - Width 210 miles (340 km) - Length 340 miles (545 km) - % water 2. ...
Today the North Dakota State Historical Society runs Fort Buford as a historic site.
FortBuford, located near present-day Williston, was one of a number of military posts established to protect overland and river routes used by immigrants settling the West.
Although historically the FortBuford region was claimed by the Hidatsa, the Sioux controlled the area after the Hidatsa population was decimated by smallpox.