The main rivers of the Pacific Northwest are the Fraser River, the Columbia River, and the Snake River. The Fraser River is mainly in British Columbia; it flows west to the Pacific Ocean near Vancouver. The Fraser drains most of the southern Canadian Cascades. The Columbia River begins in the Canadian Cascades and flows south, then turns west where it meets the Snake River. From there, it flows on to the ocean near Portland. The Snake River is mainly in inland Idaho. After a journey west from the Rocky Mountains, it meets the Columbia at Kennewick, Washington.