The Columbia River is a major river in the Pacific Northwest region of North America. It flows for about 1,243 miles, originating in the Rocky Mountains of British Columbia, Canada, and emptying into the Pacific Ocean at Astoria, Oregon. The river serves as a natural border between Washington and Oregon and is known for its significant role in the region's ecology and economy. The Columbia River is vital for transportation, irrigation, and hydroelectric power generation. It supports various industries, including fishing and shipping, and is home to diverse wildlife. The river's watershed encompasses several national parks and protected areas, contributing to its ecological importance.