RedactedNarrative: GPS Coordinates: 36 deg 56'' .745 N, 111 deg 16'' .426 W
  Vessel was leaving Navajo Canyon at approximately 1810 hours (AZ time) when the vessel ran aground on rocks below the surface at the back of Navajo Canyon.  Operator reports speed as approximately 6 mph, passenger reports 10-15 mph at the time of the incident.  All passengers were in the bow of the boat with the exception of the operator at the helm.  Subject1 was in the center bow seat, subject2 was seated on the port bow seat holding her 2 year old son and subject3 was seated in the starboard bow seat holding her 2 year old son.  All passengers remained inside the vessel and were not injured.  The operator struck his neck on the windscreen but reported no serious injury and did not desire medical attention.  The family was unable to reach assistance via telephone or radio and swam to a nearby beach where they spent the night.  Passengers of VESSEL 1 were reported overdue the evening of 08/26/2014.  Passengers were discovered the following morning at approximately 0600 hours by family members.  
  National Park Dispatch was not informed of the vessel being found and search and rescue was initiated on 08/27/2014 at 0600 hours.  Ranger and I found the vessel grounded on the rocks at the back of Navajo Canyon on 08/27/2014 after receiving information about its location from NPS pilot who was performing overflight search of the area.  All passengers had been removed from the area prior to our arrival via PWC''s operated by other family members.  Photographs were taken on scene 08/27/2014 and detailed photos of the damage were taken at the yard of Wahweap Top Shop on 09/02/2014.
  CONCLUSION:
  Failure to maintain proper lookout resulted in striking hazard rock and running aground.