RedactedNarrative: On 07/22/2018 at approximately 1200 hours, Operator of V#1 stated he was travelling northeast on the Colorado River, just south of the Sandbar,  closest to Lake Havasu City, AZ. Operator of V#1 stated while travelling northeast, he observed three Personal Watercrafts(PWCs) tavelling southeast towards him, contrary to navigation. Operator of Vessel #1 stated the PWCs were travelling so fast that he was forced to make a sharp turn to avoid an imminent head-on collision, and ran his vessel aground, on the Arizona Shoreline, causing serious damage to his engine.