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.
American Fork River
The city of American Fork is named after this river.
The description "American" in the river's name is to distinguish it from the Spanish Fork River that also originates in the Wasatch Range; alternatively, it could have been named after the American Fur Company.