This challenging Class IV put-in for the Sacramento River Box Canyon run involves a steep descent down a fixed rope near Siskiyou Dam bridge (approximately 80 feet), with inflatable boats best carried uninflated due to limited flat spots at the river level.

The put-in marks the start of a scenic 7-mile whitewater run featuring nearly continuous Class IV rapids through a steep basalt gorge, with flows typically ranging from 300-1,200 cfs and best conditions during spring snowmelt and dam releases.