On June 29, 2013, the houseboat was moored on the shoreline in Wild Burro Bay approximately 1/2 mile from Temple Bar Marina on Lake Mead.  The occupants of the houseboat also moored a Tige ski vessel against the starboard stern exhaust vents of the houseboat.  They left the generator running so the air conditioner would remain on throughout the night.  The occupants of the houseboat went to bed between 2100 and 2300 hours.  At approximately 0300 hours, the owner of the houseboat awoke to the carbon monoxide detector alarm going off.  He turned the alarm off and went back to bed due to several prior false alarms.  At approximately 0730 hours, all occupants of the houseboat began to wake-up.  All occupants were experiencing symptoms of carbon monoxide poisoning.  They boarded the Tige ski vessel and traveled to Temple Bar Marina for further medical assistance.
Dolan Springs, AZ