RedactedNarrative: On 05/30/2021 I, Game Warden, was patrolling the colorado river south of davis dam via patrol vessel. At approximately 1455 hours I contacted 4 individuals in the water stating they were just involved in a PWC vs. PWC accident near the riverside casino. All 4 parties involved in the accident were brought to the arizona shore. I began to photagraph the accident and gather witness statements from all parties involved. V2 Operator was operating V2 with V2 passenger. V2 Operator was operating V2 southbound on the colorado river going less than 10 mph. V1 Operator was operating V1 with V1 passenger. V1 Operator was operating southbound near the riverside dock. V1 Operator was operating in close proximity to the dock and turned east to avoid collision with the dock. V1 Operator failed to keep a proper lookout as he turned east into the direction of V2. V1 Operator came off throttle and lost steering striking V1 on the starboard side. V1 ramped up V2 ejecting both occupants from V2 as well as the passenger on V1. The collision caused fiberglass damage and paint transfer to the bow hull of V1. V2 had damage to the handlebars and all components, damage to the starboard mirror, damage to the hood, and damage to the starboard railguard. The occupants of V2 sustained minor injuries and were examined and cleared by Bullhead City paremedics. V1 Operator was cited for NRS 488.430 - Rule 5, Fail to maintain proper lookout.