Lochsa River
 The Lochsa River is in the northwestern United States in the mountains of north central Idaho. It is one of two primary tributaries (with the Selway to the south) of the Middle Fork of the Clearwater River in the Clearwater National Forest. Lochsa is a Nez Perce word meaning rough water.The Lochsa (pronounced lock-saw) was included by the U.S. Congress in 1968 as part of the National Wild and Scenic Rivers Act.