The confluence of the American River is where the North and Middle Forks merge near Auburn, California, forming a single river that continues toward the Sacramento River. This area is part of the Auburn State Recreation Area and offers various recreational activities, including hiking, swimming, and fishing. Notably, the Foresthill Bridge, California's tallest bridge at 730 feet, spans this confluence, providing scenic views of the river and surrounding canyon.

Cave Valley Climbing Area, also known as the Quarry Trail Climbing Area. This site features impressive limestone formations and rock walls, providing climbers with a variety of routes suitable for different skill levels. The climbing area is accessible via the Quarry Trail, located along Highway 49, just north of the confluence of the North and Middle Forks of the American River.