On the Trail

September 10, 1803
Moundsville
Fearing his corporal has deserted, Lewis is relieved when the soldier appears in the morning with two hands and 90 pounds of bread. Lewis explores ancient Indian mounds at present Moundsville, and the boats make 24 miles down the Ohio River stopping opposite present Clarington, Ohio.

September 10, 1804
Plesiosaur bones
Under a gentle breeze, the expedition makes 20 miles stopping about six miles below the present Snake Creek bridge in South Dakota. Along the way, they collect fossilized bones from a plesiosaur—an aquatic dinosaur. In the afternoon, Corporal Warfington who typically commands the red pirogue, walks the shore with some hunters. Pvt. Shannon is still missing.

September 10, 1805
The travelers rest
From Travelers’ Rest near present Lolo, Montana, hunters disperse in several directions. Pvt. Colter brings three Indians to camp, and the captains learn about the trail that will take them to the Clearwater River. Pvt. Whitehouse reports that the area’s abundant choke cherries have recently been harvested.

September 10, 1806
News of Zebulon Pike
Fur traders heading up the river tell the captains that Zebulon Pike is leading an expedition to the source of the Arkansas River. They end the day near present Bean Lake, Missouri.
Down the Ohio
31 August–13 November 1803
On 31 August 1803, after months of preparation, Lewis and his crew finally head down the Ohio River. Unfortunately, the water is so low that they must frequently unload and tow the overloaded barge with horses and oxen.
At the request of President Jefferson, Lewis disembarks at Cincinnati and travels overland to gather fossils at Big Bone Lick. He meets the boats, and together they continue to the Falls of the Ohio to pick up William Clark and several new recruits.
The expedition arrives at Fort Massac near the mouth of the Ohio on 11 November. There, they meet George Drouillard and immediately hire him as an interpreter. His first mission is to find the missing army recruits from Fort Southwest Point in Tennessee.
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Crossing the Lakotas
9 September–25 Oct 1804
Moving the flotilla of boats up the Missouri in the present states of South and North Dakota, the expedition encounters several nations with limited experience with St. Louis-based traders.
Soon after going around the Big Bend of the Missouri, they meet the Lakota Sioux, and a multi-day encounter goes badly for both peoples. They proceed on to some Arikara villages where they hold a council and invite Too Né (Eagle Feather) to travel with them. He provides useful information and would eventually visit Washington City.
In late October, they reach the Knife River Villages—a complex of Hidatsa and Mandan villages. With winter quickly approaching, they must act fast to establish winter quarters.
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Down the Western Valleys
11 August–10 September 1805
Having reached the end of the navigable Missouri, the captains—aided by Lemhi Shoshone Chief Cameahwait, Sacagawea‘s brother—begin acquiring horses, making pack saddles, and caching supplies they can no longer take with them.
With the help of the Lemhi Shoshones, everything is carried across the Continental Divide. Clark and their new guide they call Toby, scout the Salmon River and find it is not navigable.
After nearly three weeks with the Shoshones, the expedition moves down the Lemhi River valley and heads up the North Fork Salmon River. The captains ignore Toby’s advice to follow the Indian Road, and they are forced to spend a snowy night near the summit of Lost Trail Pass.
Dropping down from Lost Trail Pass, the Flathead Salish give them a warm welcome and sell them some horses. The expedition then proceeds down the Bitterroot River Valley to Travelers’ Rest where they have yet to cross the Bitterroot Mountains.
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The Final Leg
11 August–26 September 1806
While hunting on the Missouri River below present Williston, North Dakota, Lewis is accidentally shot through the flesh of his buttocks. The next day, they catch up to Clark’s party at Reunion Bay. As one united force, they are ready to sprint down the river to St. Louis.
At the Knife River Villages, they drop off the Charbonneau family and pick up Chief Sheheke and interpreter René Jusseaume who will visit Washington City.
The faithful paddlers meet several traders and receive flour, whiskey, woven shirts, and most importantly, news of the United States.
On 23 September 1806, the citizens of St. Louis—having given them up for dead—provide a boisterous welcome. The captains commence writing.
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Featured Members


Lewis wrote that “McNeal had exultingly stood with a foot on each side of this little rivulet and thanked his god that he had lived to bestride the mighty & heretofore deemed endless Missouri.”
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Joseph yelled to his brother Reubin, who was instantly awake, and the two sprinted for fifty to sixty paces after the natives who were clutching their guns.
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On 8 October 1805, the canoe split open and took on water. The Corps encamped for two days to dry out the goods, allowing Thompson to heal a bit.
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Quick Links
Meriwether Lewis
William Clark
Sacagawea
York
Jean Baptiste Charbonneau
Seaman
All Members
Native Nations Encountered
Featured Artist: Steve Ludeman
Final Inspection
Falls of the Ohio
Unloading the Red Pirogue at Camp River Dubois
In the words of artist Steve Ludeman, “I am fascinated with the geology, archeology, natural history, and cultural history of our country.” For years, he has specialized in landscapes and seascapes of the Pacific Northwest, but he also interprets the Eastern Legacy of Lewis and Clark. This is the 1803-04 journey of the Lewis and Clark Expedition from the Eastern seaboard, down the Ohio, up the Mississippi, to their winter camp at River Dubois (Wood River) across from St. Louis. These focus areas combine his love of history and outdoor adventures with a love of painting. For him, the journey of painting is a joyful one.
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To cross the Rocky Mountains, the Lewis and Clark Expedition needed horses and the skills to manage them. Despite their seemingly constant struggle to find missing and stolen horses, as a kind of calvary unit, they left hoof prints on approximately 1,500 miles of western terrain.
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Links to every day-by-day page in a calendar format spanning 31 August 1803 to 26 September 1806. A page every day!
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Although hunting and fishing were often considered a ‘gentleman’s sport’ especially in Europe, hunting and fishing for Native Americans and Americans alike were a matter of survival. The success of the Lewis and Clark Expedition depended on the success of its hunters.
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Learn about the people—and one dog—who were members of the Lewis and Clark Expedition.
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Starting with its genesis in Jefferson’s Monticello, Lewis’s training and preparations in Philadelphia, and the barge’s excursion down the Ohio River, the route they took, often called the Lewis and Clark Trail, crosses the continent weaving an epic tale of western exploration treasured by many today.
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Legacy is a very slippery sort of term. If we could erase our myth concepts of Lewis and Clark … it might reawaken something really extraordinary in our national consciousness.
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Explore the methods they used to get stuff done—from building canoes to making rope.
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Starting at Pittsburgh, traveling to the Pacific Ocean, and then returning to St. Louis, the Lewis and Clark Expedition traveled approximately 10,600 miles. Of that, 85%—over 9,000 miles—was by boat. To understand travel in the early 1800 American West is to understand the boats and challenges of river navigation.
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Other topics include music, holidays, High Potential Historic Sites, and an index of articles from We Proceeded On.
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Their work in the emerging fields of botany, ethnography, geography, geology, and zoology are now considered classics of early American scientific literature.
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Lewis and Clark were among several significant explorers of North America both before and after the expedition.
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The President’s representatives in Paris had bargained successfully with Napoleon’s bureaucrats not only to buy the port of New Orleans, then the keystone of the continent, but also to acquire, at three cents an acre, an area extending from the Mississippi River to . . . where? No one knew until Meriwether Lewis stood at the crest of the Rocky Mountains at a place known today as Lemhi Pass, on 12 August 1805.
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Throughout the expedition the soldiers were expected to conform to the rules and routines of the frontier soldier of 1803.
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The Lewis and Clark Expedition benefited from the Indians’ knowledge and support. Maps, route information, food, horses, open-handed friendship—all gave the Corps of Discovery the edge that spelled the difference between success and failure.
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Lewis and Clark left behind among many Indians a legacy of nonviolent contact. Those who came later enjoyed that legacy and too often betrayed it.
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The success of the Lewis and Clark Expedition was due to its many members and the people they met, including politicians, Eastern gentleman scientists, traders, and the many people already living in the American west.
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Because of the literate journalists, historians and visual artists can tell the Expedition’s story. When they celebrated with song and dance, we too can share in the experience.
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From major crisis such as the death of Sgt. Floyd, Lewis’s gunshot wound, and the illness of Sacagawea to minor events such as sexually transmitted diseases, mosquito-born illnesses, and deep cuts, the medical aspects of the Lewis and Clark Expedition provide an interesting topic of study.
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Given President Jefferson’s directive to establish commerce, the captains worked extensively within a long-established network of North American fur trade. Part of their mission was to help establish the United States of America’s position within that industry.
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The entire story is told in these five webpages.
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From clichés and colorful sayings of the time to Native American languages, these pages feature the art of language.
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Discover More
- The Lewis and Clark Expedition: Day by Day by Gary E. Moulton (University of Nebraska Press, 2018). The story in prose, 14 May 1804–23 September 1806.
- The Lewis and Clark Journals: An American Epic of Discovery (abridged) by Gary E. Moulton (University of Nebraska Press, 2003). Selected journal excerpts, 14 May 1804–23 September 1806.
- The Lewis and Clark Journals. by Gary E. Moulton (University of Nebraska Press, 1983–2001). The complete story in 13 volumes.