A large tributary of the Clearwater River flows within a forest with how many acres?
Selway River: The Selway River is a large tributary of the Middle Fork of the Clearwater River in the U.S. state of Idaho. Selway River:  It flows within the Selway-Bitterroot Wilderness, the Bitterroot National Forest, and the Nez Perce National Forest of North Central Idaho.
i don't know