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.
New River (Kanawha River tributary)
Few highways cross the gorge, with the most dramatic bridge by far being the New River Gorge Bridge on U.S. 19, a steel arch bridge spanning , with the roadway above the average level of the river. This structure is the third-longest single-arch bridge in the world, and is also the world's twenty-third-highest vehicular bridge, and the fourth highest in the Americas.