Lewis & Clark

Roc

ky

Mountains

G

r

e

a

t

P

l

a

i

n

s

Missouri River

Yellowston

e R.

O

hi

o R

ive

r

Columbia

PACIFIC
OCEAN

River

S

na

ke River

M

iss

iss

ipp

i R

iv

er

St. Louis

Fort Mandan

L O U I S I A N A P U R C H A S E

Fort

Clatsop

W

E

N

S

250

500

250

500

0

mi

0

km

Clark’s return route

Lewis’s return route

Lewis and Clark

Legend