American River
The North Fork is the longest tributary of the American River, at . It begins at an elevation of about near Lake Tahoe in Placer County at Mountain Meadow Lake, just northeast of Granite Chief and immediately due west of Squaw Valley Ski Resort. It flows westward through remote wilderness areas.
Buffalo River (Tennessee)
The Buffalo River is the longest unimpounded river in Middle Tennessee in the United States, flowing through the southern and western portions of that region. It is the largest tributary of the Duck River and is used for canoeing, especially in its middle section. The river is named for the Buffalo fish which was abundant when the first European settlers arrived.