RedactedNarrative: SUMMARY
  On the evening of July 12, 2017 a family and friends group traveled from various cities in Colorado for a houseboat trip to Lake Powell. All the individuals were located on houseboat Summer Paradise or in the immediate vicinity of the houseboat beached in Crystal Springs Canyon. Operator was working on the generator of the houseboat because it stalled or quit working prior to the explosion at the rear of the houseboat. At the time of the explosion, Operator was at the helm of the vessel trying to start the generator and running the blowers. 
  
  DECEASED VICTIM was found in the starboard (right) engine bay of the houseboat Summer Paradise with severe head trauma. DECEASED VICTIM was found with a pulse and gasping breaths by associated party members. She was moved from the starboard engine bay to the swim deck on the back of the houseboat where she died. VICTIM1 was found in the port (left) engine bay unconscious with severe trauma and burns. VICTIM4 was found in the vicinity of the explosion with severe burns to his legs. VICTIM3 was put on the bed in the rear portion of the houseboat with head trauma, broken bones, and burns. VICTIM2 was seated in a chair in the front portion of the cabin of the houseboat with burns to his legs, arms, and face. 
  
  
  LOCATION/ENVIRONMENT
  It was night time, clear skies with no moonlight, a light breeze calm water with air temperature approximately 80 degrees and water temperature approximately 76 degrees. 
  
  UT State Fire Marshall states "the cause of this explosion is undetermined and will require further evaluation of the fuel systems to identify the source of fuel/air mixture in the bilge area, as well as the generator ignition system to determine the likely source of ignition.