RedactedNarrative: On August 4th, 2018, I, Game Warden, was patrolling the Colorado River by patrol vessel. At approximately 1421 hours dispatch advised me of a non-injury personal watercraft (PWC) collision at the Avi Resort and Casino. Dispatch also advised both PWC''s and parties were on scene at the launch ramp. At approximately 1422 hours, I advised dispatch I was enroute.
  
       I arrived on scene at approximately 1457 hours. Fort Mohave Tribal police was on scene with both parties and their PWC''s. The Fort Mohave Tribal police officer gave me 2 witness statements with both parties information (attached). At approximately 1505 hours, I advised dispatch Fort Mohave Tribal police cleared the scene.
  
                    Once on scene, I began my investigation. On scene, I took photographs of both vessels (attached). I also gathered additional witness statements from both parties (attached).
                     At approximately 1605 hours, I cleared the scene.
  Investigation
       operator of vessel 2 (V2) was travelling south on the Colorado River on the Nevada side, near the Avi Resort. Operator2 stated that his daughterwas on V2 with Operator2. Operator2 stated Daughter was sitting in front of Operator2 on V2, while Operator2 was operating V2. Daughter was not on scene during my investigation.
  
       Operator2 advised that he was struck from behind by vessel 1 (V1). Operator2 advised he nor Daughter were ejected from V2 after the collision. Operator2 advised he did not see V1 before the collision. Operator2 advised he was giving throttle at the time of the collision.
  
  operator of V1 bearing Arizona Registration was travelling south on the Colorado River near the middle of the river on the Nevada side, near the Avi Resort. Operator1 was operating by himself. Operator1 advised he changed his path of travel to the right to avoid a vessel that was displaying an orange ski flag, advising that people are in the water. When Operator1 changed his path, he noticed V2 but did not know the speed of V2. Operator1 was travelling at a self-reported speed of over 40 miles per hour (MPH). Operator1 did not notice V2 slowing down, and struck V2 from behind.
  
       The bow of V1 struck the stern of V2.
       V1, owned by Kabul Inc, had fiberglass damage on the bow. The bow was also missing a section of rub rail. The estimated damage to V1 is approximately $2000.
       V2, owned by Operator2, had damage throughout the stern of V2. The grab handle below the seat was broken in several places. There was paint transfer below the seat. There was damage to the rub rail on the stern. The rear seat had a tear on the port side. The estimated damage to V2 is approximately $500. (www.seadoopartshouse.com was used to assist in estimation.)     
  Conclusion
       Operator1 was found at fault for the collision. Operator1 was in violation of multiple Inland Vessel Navigation Rules, including Rule 5 Look Out, Rule 6 Safe Speed, Rule 7 Risk of Collision, Rule 8 Action to Avoid Collision NRS 488.540, NAC 488.430. Operator1 was cited for Rule 5 Look Out, NRS 488.540, NAC 488.430 (citation attached).
       During my investigation, I found operator2’s fire extinguisher was inoperable, NRS 488.193, NAC 488.415. There was no enforcement action taken for this violation.
  