On the Trail

August 23, 1803

Possible delay

In Pittsburgh, Lewis witnesses a vibrant boat-building industry. Just last year, two large ocean-going ships had been built there. To reach deep water, they had to wait until the spring flood of 1803. With historically low water in August 1803, Lewis likely fears he may have to delay the expedition until next year's high water.

August 23, 1804

First bison kill

Near present Vermillion, South Dakota, Pvt. J. Field has the expedition’s first bison kill. They gather the meat and move up the river about ten miles before stopping to preserve the day's harvest. Blowing sand turns the plains white and hampers Clark's journal writing while Lewis collects a mineral specimen of selenite.

August 23, 1805

The River of No Return

On the Salmon River, Clark and his Shoshone guide Toby, climb a mountain spur where they see the futility of canoeing the Salmon River—also known as the River of No Return. Across the Great Divide at Fortunate Camp, Cameahwait asks Lewis to wait another day before starting the portage over the Rocky Mountains. The dugouts are sunk in a nearby [...]

August 23, 1806

Lewis recovers

The enlisted men paddle about forty miles down the Missouri despite having to wait multiple times for winds to abate or storms to pass. The hunters use the time to kill three elk and three deer. Lewis recovers from his gunshot wound, and at their camp near present Forest City, South Dakota, the mosquitoes prove troublesome.

Two army officers at Harpers Ferry ponder an iron frame in the shape of a large canoe

Eastern Beginnings

10 January–30 August 1803

The Lewis and Clark Expedition ostensibly began in February 1801 when President Thomas Jefferson wrote a letter to Army commander General James Wilkinson requesting that Lieutenant Meriwether Lewis become the President’s personal secretary. Exploration of North America’s western half had long been a goal of the president, and now he had a young protégé who might lead such an expedition.

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Yankton Sioux encampment with tepees and scaffold graves

Among the Yanktons

21 August–8 September 1804

Moving along the present border between Nebraska and South Dakota, the expedition turns its ‘enlightened‘ attention to several features in the upper Missouri River mythology.

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York leads a horse, Sacagawea and the Captains ride

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.

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The white pirogue ad dugout canoes arrive at the French village of St. Charles.

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.

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Featured Members

    John Colter

    Private

    Colter left a legacy of western lore, not the least of which was his famous run from the Blackfeet Indians and his exploration of “Colter’s Hell.” Yet his contributions to the expedition were also many.

    William Bratton

    Private

    On 11 May 1805, Bratton appeared, running toward the river and yelling to be taken aboard quickly. He had shot a grizzly through the lungs, and the wounded bear had chased him for half a mile. The bear had lived at least two hours after first being shot.

    Hugh McNeal

    Private

    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.”

Quick Links

Meriwether Lewis William Clark Sacagawea York Jean Baptiste Charbonneau Seaman All Members

Featured Artist: Alfred Jacob Miller

John Mix Stanley Chromo Lithograph of the Bears Tooth

Pierre and the Buffalo in Jean Baptiste, Mountain Man.

Watercolor of a Shoshone warrior standing if front of an encampment

Snake Indian Camp in August 19, 1805.

Two Indians on horseback, one leaning far back

Blackfeet on the Warpath in The Blackfeet Confederacy

Miller’s reputation rests on his single Green River Rendezvous trip from which he transformed his original sketches and notes into a lifetime of images. His work preserves details of clothing, equipment, camps, transport, and performance. At the same time, his images were made for patrons who valued romance and spectacle. For that reason, Miller should be read carefully.

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    Medicine on the Trail

    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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    Louisiana’s Purchase

    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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    The Trail

    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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    Calendar

    Expedition Calendar

    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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    Native American Nations

    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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    People

    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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    The Boats

    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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    Legacies

    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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    The Fur Trade

    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 Arts

    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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    Horse Travel

    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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    Hunting and Fishing

    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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Experience the Lewis and Clark Trail

The Lewis and Clark Trail Experience—our sister site at lewisandclark.travel—connects the world to people and places on the Lewis and Clark Trail.

Logo: Lewis and Clark.travel

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.