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.
Mulberry Fork of the Black Warrior River
Mulberry Fork is a tributary of the Black Warrior River, long, in the U.S. state of Alabama. The Mulberry Fork is one of three forks, along with the Locust Fork and the Sipsey Fork, that join to form the Black Warrior. It drains part of the southernmost end of the Appalachian Mountains north and west of Birmingham in the drainage basin of the Mobile River.