The Columbia River flows through Portland, Oregon, serving as a significant geographical feature.

The Columbia River, the biggest river in the Pacific Northwest of the United States, runs beside Portland, Oregon. The city's economics, transportation, and historical development are all significantly impacted by this river. The Columbia River serves as a vital river for trade and shipping and forms a portion of the boundary between Oregon and Washington. With parks and waterfront areas that draw both residents and tourists, the river also adds to the city's picturesque appeal. It is also a significant natural feature that affects the local ecology and climate of Portland.