RedactedNarrative: On 08-05-19 at 1221hrs, an injury watercraft accident involving two PWC occurred on the Colorado river in the area of the Chamber of Commerce building located at 1251Highway 95 Bullhead City AZ. Operator of listed PWC 1 was operating contrary to navigational rule (south bound in north bound traffic) when accident occurred. Both operators were injured operator of PWC 2 was transported to hospital.