Treat River

The Treat River is a short tributary of the Salmon River in Lincoln County, in the U.S. state of Oregon. It begins in the Siuslaw National Forest in the Central [Oregon Coast Range] and flows generally northwest. It enters the larger stream between the H. B. [Van Duzer Forest State Scenic Corridor] along Oregon Route 18 and the unincorporated community of Rose Lodge. It has no named tributaries.
According to the Northwest Waterfall Survey, there is a waterfall about upstream of the mouth of the Treat River. Its unofficial name is Treat River Falls, the survey says, though that may be a pseudonym for Anna's Falls.