Clearwater, river, c.190 mi (305 km) long, rising in several branches in the Bitterroot Range, N Idaho, and flowing west to join the Snake River at Lewiston, Idaho. The gold-mining era in Idaho began in 1860, when gold was discovered and mining camps were set up on the river's southern fork.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.