By A Mystery Man Writer
Columbia River, largest river flowing into the Pacific Ocean from North America. The Columbia is one of the world’s greatest sources of hydroelectric power and, with its tributaries, represents a third of the potential hydropower of the United States. It is 1,240 miles (2,000 km) long.
Surprises Await at the Columbia River Maritime Museum - Travel Oregon
Columbia River Gorge - Wikipedia
Columbia River - Wikipedia
Early Threats and Protection Efforts
A Great Artery of Transportation Historical Marker
A Brief History of the Columbia River
History of Columbia River Gorge Locks Bridge Dam Oregon '70s
Columbia River
Offbeat Oregon History, 1899: Lightship had to go cross-country to
Columbia River
Mouth of Columbia River.: Geographicus Rare Antique Maps