More than 85 percent of the Tillamook Bay area's historic floodplain and lowland wetlands have been lost as a result of human settlement and development. Loss of these habitats has resulted in significant impacts on salmon, migratory birds, and other fish and wildlife. The Trask-Wilson project was developed in response to declining water quality, diminished habitats, and increased flooding in and around the upper Tillamook Bay.

Aerial view of the confluence of the Wilson, Tillamook, and Trask Rivers
(Don Best photo)