RedactedNarrative: On 7/14/16 at approximately 0930 hours, I was dispatched to a boat accident at Halls Crossing Marina within Glen Canyon National Recreation Area and advised the subjects were currently at Aramark Office. Upon arrival on scene, I was flagged down by an Aramark employee who stated the boat accident was past occurred from 7/11/16 and he had heard about it third party through other Aramark dock hand employees. I was advised the two boats involved were "Moenkopi", a white 2009 Summerset houseboat, docked on Covered Slips, Vessel 1 and "Windsor", a white 1998 Jamestowner houseboat, docked at slip, Vessel 2. I was advised Vessel 1 had hit the slide of Vessel 2.
  
  Upon responding to slip, I observed Vessel 1 was currently docked, however an occupied runabout boat was currently leaving the area at the stern of Vessel 1. I requested the runabout return so I could speak with them about the boat accident. A male subject stated he knew of the accident but did not witness it. He stated that operator1 was the operator of Vessel 1 when the incident occurred and that Operator1 might still be at Halls Crossing Marina parking lot in a motor home. Furthermore, he pointed out the damage to the rear port side of Vessel 1 which consisted of a scratch (estimated damage $200.00). I photographed the damage to Vessel 1. I attempted to locate Operator1 in the parking lot, however he had already left.
  
  I responded back, where I observed Subject2, permitted for Commercial Services, working on the slide of Vessel 2. Subject2 stated he had been requested by Operator1 to fix Vessel 2. Subject2 stated he asked Operator1 if he had reported the accident to the National Parks Service. Subject2 stated he regularly services Vessel 2, so he had contacted the owner. Subject2 stated he was authorized to attempt to make the slide serviceable. Subject2 advised prior to my arrival he had straightened two of the large metal plates on the top and bottom of the slide so it would rest flat again. Subject2 stated he had also repaired the fiberglass at the end of the slide which had been cracked and damaged. Subject2 stated several attachment welds between the boat and slide were broken and he would have to remove Vessel 2 from Lake Powell to be able  to fix the welds. Subject2 stated he would potentially have to replace the whole slide. Subject2 estimated the total bill for services around $3000.00. I photographed the damage and repairs observed.
  
  Upon responding to the Halls Crossing Aramark Office. I spoke with Aramark Manager who stated when Operator1 was leaving on 07/14/16 he had stopped at her office to obtain contact information for the owner of Vessel 2. Manager stated she had told Operator1 to wait on scene as she had notified the National Park Service of the boat accident and a Ranger was responding to take the report, however Operator1 left. As of 7/14/16, Operator1 had yet to contact law enforcement to advise of the boat accident.
  
  On 07/15/16 at approximately 1500 hours, I telephonically contacted Operator1 again and he answered the phone. Operator1 stated on 07/11/16 at approximately 1900 hours he was the operator of Vessel1 when he was involved in a boat accident with Vessel 2. 
  
  Operator1 stated he backed Vessel 1 out of the slip and didn't give himself enough room and that he should have backed out further. Operator1 stated the left rear corner Vessel 1 caught and hit the slide of Vessel 2. Operator1 stated he solicited Subject2 to make temporary repairs on Vessel 2. Operator1 stated he had notified his insurance company and was currently working with them on the accident. Operator1 stated he had first contacted Subject2 on 07/14/16 and told him he had "clipped" Vessel 2 and questioned Subject2 if he could fix it. Operator1 stated Subject2 asked him if he had reported the accident to the National Park Service. 
  
  I advised operator1 he needed to report the boat accident as soon as possible after it had occurred and was safe to do so. I advised Operator1 he would be receiving  a citation via mail for failure to report a boat accident.