The Lochsa River is in the northwestern United States, in the mountains of north central Idaho. It is one of two primary tributaries of the Middle Fork of the Clearwater River in the Clearwater National Forest. Lochsa is a Nez Perce word meaning rough water. The Salish name is Ep SmÉ«í, "It Has Salmon."
Etymology: Nez Perce word for "rough water"
Country: United States of America
State: Idaho
County: Idaho
Source: Confluence of Crooked Fork and Colt Killed Creek · Bitterroot Mountains