The Rivers of Portland
Portland is at the confluence of two great rivers--the Willamette, which is the 13th largest river by volume in the continental U.S.; and the Columbia, the nation's 4th largest (and the biggest North American river discharging to the Pacific Ocean).
Portland lays claim to the last 17 miles of the 187 mile long Willamette, and about 24 miles of the 1,200 mile-long Columbia. Portland's city center and harbor are on the Willamette. The south shore of the Columbia is home to Portland's international airport and many industries. Both rivers represent tremendous natural and economic assets. A number of highlights are called out below--and more information is available on the Willamette and Columbia pages of this site.
A summary of the environmental conditions in the Lower Willamette and the River's history of change.|
Oregon Department of Environmental Quality report that provides a resource for water quality managers, watershed councils, municipalities and citizens to help understand the status of watershed conditions in the Willamette basin.
River Facts and Flows