The Willamette Valley is a 150-mile long valley in Oregon, in the Pacific Northwest region of the United States. The Willamette River flows the entire length of the valley and is surrounded by mountains on three sides: the Cascade Range to the east, the Oregon Coast Range to the west, and the Calapooya Mountains to the south.
Location: United States, Oregon
Borders on: Cascade Range (East) · Oregon Coast Range (West) · Calapooya Mountains (South)