RedactedNarrative: On 9/13/2020 at 1510hrs, a injury hit and run watercraft accident occurred on the Colorado river in the area of south beach of the Chamber of Commerce located at 1251 Highway 95 Bullhead City AZ. Operator of vessel one was struck by operator of vessel two from behind. Both vessel were headed north on the river. Operator of vessel two complained of a back injury. Operator of vessel two was treated by local paramededics and declined transport to hospital. Operator of vessel one left the scene.