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. Bitterroot National Forest: Bitterroot National Forest comprises 1.587 million acres (6,423 km²) in west-central Montana and eastern Idaho, of the United States.
i don't know