Spring

Lewis leaves Washington D.C and

heads to Philadelphia to prepare for expedition.

March 23

The expedition heads back

toward home.

Fall

July 4

Lewis leaves Washington D.C. and heads to Pittsburgh to

oversee keelboat construction.

The Corps of Discovery expedition heads down

the Ohio River.

Camp Wood/Camp Dubois is established on

the east bank of Mississippi River

upstream from St. Louis, Missouri.

December 12

The Corps of Discovery returns home to St. Louis.

September 23

May 14

The expedition leaves Camp Wood/Camp

Dubois with roughly 50 men. They travel up the Missouri River in three

boats.

September 7

The group sees new animals like coyotes

and antelope in South Dakota.

August 3

First official council between Native tribes of the West and U.S. officials just North of Omaha, Nebraska.

November 4

Near Bismarck, North Dakota, the expedition

group meets Sacagawea.

April 7

Lewis and Clark send one of the

boats back down river carrying

goods to show Thomas Jefferson

such as Indian corn and a prairie dog.

October 16

The expedition reaches the

Columbia River, full of salmon.

June 13

Lewis discovers a grand waterfall followed by four others along the Missouri River.

December 17

The group records a temperature of 45

degrees below zero.

February 11

Sacagawea has a baby boy named Jean

Baptiste.

April 29

The expedition reaches what is now Montana

where they encounter a herd

of 10,000 buffalo.

August 17

The expedition finds a Shoshone village where the

chief is Sacagawea’s

brother.

August 12

Lewis reaches the border between Montana and Idaho and sees only more mountains.

November 7

After seeing what he thinks is the end of land, Lewis and his group are stranded for 3 weeks due to

high winds.

July

The group reaches the Three Forks of the Missouri and Sacagawea finally recognizes where they are.

Timeline of the Lewisand Clark Expedition

1803 1804 18061805

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