The Tualatin River is a river located in northwestern Oregon, primarily flowing through Washington County. It stretches approximately 83 miles and is a tributary of the Willamette River. The river's watershed covers about 712 square miles, providing essential water resources for the surrounding communities and ecosystems. The Tualatin River is known for its scenic beauty and recreational opportunities, including fishing, kayaking, and hiking along its banks. The river supports diverse wildlife and is part of the Tualatin River National Wildlife Refuge, which aims to protect habitats for various species and promote conservation efforts in the region.