The five river basins in the Tillamook Bay Watershed drain from Oregon’s northern Coast Range into Tillamook Bay, a shallow estuary that is an important nursery for Oregon fisheries, including the $45 million Dungeness crab industry. This report describes the past climate of the watershed, projects future climate change over the next century and suggests possible impacts. While the scope of this project did not include next steps, it is expected that future reports will identify actions that may provide resiliency against anticipated impacts.