Last updated: October 19, 2020
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Corps Reaches Fort Mandan on Oct. 27, 1804

NPS Map
To the Native people’s dismay, they quickly learned the newcomers intended to continue traveling upriver. The boats stopped briefly at Mitutanka and neighboring Ruptare (Rooptahee), but the visitors kept going eventually stopping directly across from the Hidatsa villages farther upstream. William Clark wrote in that day’s journal entry, “Great numbers on both Sides flocked down to the bank to view us as wee passed.”
About a week later, the Corps would return downstream to build Fort Mandan on the eastern side of the Missouri, not far from Mitutanka. Here they would remain for the next 161 days, until April 7, 1805.