North Fork American River
The North Fork American River is the longest branch of the American River in Northern California. It is long from its source at the crest of the Sierra Nevada, near Lake Tahoe, to its mouth at Folsom Lake northeast of Sacramento. Prior to the construction of Folsom Dam the river was about longer making for a total length of .
South Fork Kings River
The South Fork is the largest headwater of the Kings River. It originates at an elevation of at an unnamed lake in Kings Canyon National Park, south of Mather Pass and west of Split Mountain, in a high alpine basin known as Upper Basin. It flows south, and is paralleled for several miles by the combined Pacific Crest Trail/John Muir Trail. The trail and river separate at a point west of Taboose Pass, where the river turns to the southwest through a deep gorge between Cirque Crest to the northwest and Arrow Ridge to the southeast. To the east, the Muro Blanco cliffs rise more than half a mile (0.8 km) above the river.