Northwest Region
Wyoming, Montana, Idaho,
Oregon, Washington
Northwest Region
Major Landforms Major Bodies of Water
Coast Ranges Pacific Ocean
Cascade Range Columbia River
Columbia Plateau Snake River
Rocky Mountains Missouri River
Great Plains
Wyoming has the smallest population of any state.
Wyoming
Capital – Cheyenne
Abbreviation – WY
• Several mountain ranges,
part of the Rocky Mts.,
cover Wyoming: Teton,
Bighorn, Laramie, and
others.
• The N. Platte River, a
tributary of the Missouri
River, runs through the
state.
Montana
Capital – Helena
Abbreviation – MT
• The Great Plains cover the
eastern part of Montana.
• The Rocky Mts. cover the
western part.
• The Missouri River crosses
the state of Montana.
Idaho
Capital – Boise
Abbreviation – ID
• The Rocky Mts. cover
much of the state.
• The Columbia Plateau
and Snake River Plain
make up the southern
part Idaho.
• The Snake River is a
major river in the state.
Washington
Capital – Olympia
Abbreviation – WA
• The Cascade Mts. cover much
of central Washington.
• The Coast Ranges form the
western coastline.
• The Pacific Ocean borders
Washington on the west.
• Both the Snake R. and the
Columbia R. are major rivers in
the state.
Oregon
Capital – Salem
Abbreviation – OR
• Both the Coast and the
Cascade Ranges are in the
western part of Oregon.
• The Columbia R. forms
most of the northern
border with Washington,
the Snake R. is part of the
eastern border.
• The Willamette R. is
another important river.
• Oregon is bordered on the
west by the Pacific Ocean.