Ripples from La Prairie Voyageur Canoes: Chapter Three: Engagé of the Corps, (1804

St. Louis smelled of river mud, woodsmoke, and ambition that spring of 1804. The Louisiana Purchase was no longer rumor; it was fact. American officers walked the streets with a new proprietorial air, and the French merchants who had dominated the Missouri trade for a generation calculated how best to profit from the change. Among the men they calculated with were the experienced boatmen who already knew the river’s moods.

François Rivet was one of them.

When Captains Meriwether Lewis and William Clark began assembling their Corps of Discovery, they understood that soldiers alone could not force heavily laden boats against the Missouri’s current. They needed men who had spent years reading water, poling through shallows, and dragging vessels over sandbars that shifted overnight. St. Louis entrepreneur Auguste Chouteau and others helped supply those men. Eight French-Canadian engagés were hired to man a cargo pirogue. Three more were engaged to assist the soldiers with the big keelboat. Pierre Cruzatte, the one-eyed fiddler and bowman, would take his place at the prow. François Labiche would set the stroke. And among the hired paddlers who joined at St. Charles was François Rivet, then just short of his fiftieth birthday.

He did not sign on for the entire journey to the western ocean. The agreement was clear: he would go as far as the Mandan and Hidatsa villages, where the river made its great bend in what would one day be North Dakota. Beyond that point the captains would be on their own. Rivet was a free man making a limited contract, not a soldier under orders. That distinction would matter.

The expedition left the mouth of the Missouri in May and fought its way upstream through the summer. The work was brutal even for men accustomed to the paddle. The keelboat and pirogues had to be dragged, poled, and rowed against a current that never rested. Sandbars appeared where open channel had been the day before. Entire banks calved into the river with a sound like distant thunder. The men sweated in the heat, cursed the mosquitoes, and watched the prairies roll away on either side under a sky so wide it seemed to mock their slow progress.

Rivet took his turn at the oars and the poles. He was older than most of the enlisted men and many of the other engagés, but the years on the river had hardened rather than softened him. He knew how to settle into the long rhythm that conserved strength, how to read the subtle lines on the water that betrayed a hidden bar, how to keep his mouth shut when the captains’ decisions seemed foolish to a man who had already wintered among the tribes. At night, when the boats were tied to the bank and the men sprawled around the fires, he listened more than he spoke. The soldiers talked of the glory of reaching the Pacific. The French boatmen talked of wages, of the tribes ahead, and of the practical problem of getting back downriver alive.

By late autumn the Corps reached the cluster of Mandan and Hidatsa villages near the mouth of the Knife River. There they built Fort Mandan and prepared to spend the winter. Rivet’s contract was complete. In November he and three other engagés—Baptiste Deschamps, Étienne Malboeuf, and Alexander Carson—were formally discharged. They did not, however, simply turn around and head for St. Louis. Instead they built a small hut of their own a short distance from the fort walls and settled in for the winter under the expedition’s protection. It was a practical arrangement. The villages were crowded, the weather was turning deadly, and the presence of the American soldiers offered a measure of safety that independent traders did not always enjoy.

That winter François Rivet became, briefly, a figure of entertainment and curiosity. The Mandan and Hidatsa hosted dances and gatherings, and the Americans and Frenchmen were invited. One night, whether from high spirits, a desire to amuse their hosts, or simple bravado, Rivet performed a feat that entered the journals and the oral memory of the expedition: he danced on his head. In the flickering light of the fire, the stocky, graying Frenchman planted his hands on the packed earth and lifted his body into a handstand, moving his legs in some approximation of a dance while the Mandan spectators laughed and shouted approval. It was a small moment, comic and human, yet it fixed him in the record as more than just another hired paddle.

Spring came late and hard. In April 1805 the Corps of Discovery prepared to continue westward. Rivet and the other discharged men had their own plans. Together with Philippe Degie (sometimes written Degrais or Degie), who had attached himself to the party the previous autumn, Rivet built a canoe. When Corporal Richard Warfington started back downriver with the return party and the keelboat, Rivet and Degie went with them—but only as far as the Arikara villages. There they left the Americans and returned to the independent life of the upper Missouri.

The captains continued west without him. Rivet remained in the country he had come to know, a free trader and trapper once more, floating between the villages and the temporary camps of men like himself. When Lewis and Clark finally came back down the Missouri in August 1806, they found him living among the Mandans. The meeting was brief, almost casual in the journals, yet it carried a quiet weight. The great expedition had gone to the Pacific and returned. The engagé who had danced on his head had simply stayed, continuing the older pattern of the French river men who moved through the country according to their own seasons and necessities.

François Rivet watched the Corps pass downriver toward St. Louis and the fame that awaited them. Then he turned back to the work at hand—trapping, trading, reading the moods of the tribes and the river. The Missouri had not finished with him. In many ways it was only beginning.

NEXT

Chapter Four: Free Trapper on the Missouri, (1805–1808)

https://laprairie-voyageur-canoes.blogspot.com/2026/10/chapter-four-free-trapper-on-missouri.html

Rivet of the Rivers: The Extraordinary Life of François Rivet, Voyageur, Mountain Man, and Patriarch of the Pacific Northwest

Chapter One: Blood of the Voyageurs, (1754–1790s)

https://laprairie-voyageur-canoes.blogspot.com/2026/10/rivet-of-rivers-extraordinary-life-of.html

Chapter Two: The Missouri Beckons, (Late 1790s–1803)

https://laprairie-voyageur-canoes.blogspot.com/2026/10/chapter-two-missouri-beckons-late.html

Chapter Three: Engagé of the Corps, (1804–Spring 1805)

https://laprairie-voyageur-canoes.blogspot.com/2026/10/chapter-three-engage-of-corps.html

Chapter Four: Free Trapper on the Missouri, (1805–1808)

https://laprairie-voyageur-canoes.blogspot.com/2026/10/chapter-four-free-trapper-on-missouri.html