Tyson Wash is one of the larger eastern-bank dry washes that enter the Colorado River in western Arizona. It is the southwest drainage of a pair of drainages, the other being the Bouse Wash Drainage. They are in the Lower Colorado River Valley, south of Parker, Arizona and both enter the region east of the Colorado River, with no Colorado River confluence; they both end at regions on the eastern border of the Colorado River Indian Reservation located along the Colorado River in the Parker Valley. Both drainages enter upper regions of the Imperial Reservoir Drainage.