C

• Steamboats of the Columbia River (7 C, 108 P)
• Columbia River Gorge (2 C, 138 P)
• Columbia Valley (67 P)
• Steamboats of the Cowlitz River (8 P)
• Crossings of the Columbia River (1 C, 9 P)

D

• Dams on the Columbia River (15 P)

H

• Harkins Transportation Company (4 P)

I

• Islands of the Columbia River (2 C)

O

• Oregon Railroad and Navigation Company (12 P)
• Oregon Steam Navigation Company (33 P)

P

• Populated places on the Columbia River (3 C, 1 P)

S

• Shaver Transportation Company (9 P)
• Shipwrecks of the Columbia River system (9 P)

T

• Tributaries of the Columbia River (7 C, 72 P)

• Columbia River

A

• Altona (sternwheeler)
• Arrow Lakes
• Astragalus tweedyi

B

• Big Bend Highway
• Big Bend of the Columbia River
• Bonneville Power Administration
• Bradwood Landing
• British Columbia Highway 23
• Bumble Bee Foods

C

• Cape Disappointment State Park
• Carpenter Island
• Celilo Canal
• SS Charles L. Wheeler Jr.
• Charles R. Spencer
• Coast Guard Station Cape Disappointment
• Collins Beach (Sauvie Island)
• United States lightship Columbia (WLV-604)
• Columbia Bar
• Columbia Basin Initiative
• Columbia Basin Project
• Columbia Basin Trust
• Columbia boat
• Columbia Country
• Columbia Generating Station
• Columbia Lake
• Columbia Plateau
• Columbia River Basalt Group
• Columbia River drainage basin
• 1948 Columbia River flood
• Columbia River Gorge
• Columbia River Inter-Tribal Fish Commission
• Columbia River Maritime Museum
• Columbia River redband trout
• Columbia River Treaty
• Columbia Slough
• Columbia Wetlands

D

• Dalles des Morts
• Dismal Nitch

F

• Federal Columbia River Power System
• Fort Columbia State Park
• Forty-Nine (steamboat)
• Franklin D. Roosevelt Lake
• Frenchman Gap

G

• G. M. Standifer Construction Company
• Grand Coulee
• Grand Coulee Dam (song)
• Grays Point (Washington)

H

• Hanford Reach
• Hanford Reach National Monument
• Hanford Site

K

• Kinbasket Lake
• King & Winge (fishing schooner)

L

• Lake Revelstoke
• Lewis and Clark National Historical Park
• Lewis and Clark National Wildlife Refuge
• List of rapids of the Columbia River

M

• Marl Creek Provincial Park
• Martha Creek Provincial Park

N

• Nutrient cycling in the Columbia River Basin

O

• Oregon Pine (schooner)
• Oregon Pony
• Oregon Railroad and Navigation Company
• Oregon Steam Navigation Company
• Otter (sternwheeler)

P

• 1996 Pacific Northwest floods
• Pacific Northwest Waterways Association
• Pakootas v. Teck Cominco Metals
• Port of Morrow
• Priest Rapids

R

• Ringold Formation
• Roll On, Columbia, Roll On

S

• Sentinel Gap
• Silver Star Mountain (Skamania County, Washington)
• Steamboats of the Columbia River
• Steamboats of the Arrow Lakes
• Steamboats of the Columbia River, Wenatchee Reach
• List of steamboats on the Columbia River

T

• Tri-Cities, Washington

U

• Umatilla National Wildlife Refuge

W

• Lake Wallula
• Wallula Gap
• Lake Wanapum
• Windermere Lake (British Columbia)