RedactedNarrative: On 6/8/2015 I was contacted to report a vessel accident he and 2 other vessels were involved in. I asked that OPERATOR2 and any other vessels present during  the incident be brought to the Bullfrog District Ranger Office so that a full report could be made. OPERATOR2 and another individual, OPERATOR1 both brought their vessels, they also informed me that a 3rd individual SUBJECT3 was involved in the incident as well, however his vessel had sunk and had not yet been recovered. OPERATOR2 stated that on 6/6/2015, the three vessels involved in this incident were located in the back of a slot canyon when a flash flood occurred due to a rainstorm that had been present throughout the day. OPERATOR2 stated that all three vessels were caught in a whirling motion due to the currents generated by a spontaneous waterfall that had formed from atop the slot canyon they were located in. Operator2 stated that whirling motion caused the three vessels to continuously collide with each other. During these collisions, OPERATOR2 stated that SUBJECT3'S vessel sunk.
  
  I inspected both OPERATOR2'S vessel and Operator1's vessel for damages. Both showed signs of damage and stress cracks to all sides of the vessels. OPERATOR1'S vessel's prop was mangled on all of the blades. OPERATOR2 stated that he had been unable to successfully start his vessel's motor since the incident and that he had to have his vessel be towed back to Bullfrog Boat Launch Ramp for retrieval. Pictures of both vessels were taken by Ranger.
  
  On 6/6/2015 at approximately 1745 hours, I was flagged down on the Bullfrog Launch Ramp by Subject3 who reported a past occurred boat accident on Lake Powell in Glen Canyon National Recreation area. Subject3 stated on 6/6/2015 at approximately 1415 hours, he was at the end of Crystal Spring Canyon eating lunch on the beach where he had moored his vessel, a blue 1997 Maxum, when a storm with thunder and rain started. At approximately 1420 hrs, a nearby slot canyon began to gush with raging water. Subject3 stated that for 30 minutes he attempted to keep his vessel from hitting the other two boats anchored in the same area. At approximately 1450 hrs , Subject3 stated he was able to retrieve life jackets from his vessel and give them to everyone. Subject3 stated at 1500 hours, he lost anchor of his vessel whereupon it began swirling in circles under the slot canyon taking in water with each pass. Subject3 stated that at approximately 1515 hours, his vessel hit a boulder and sunk. Subject3 provided pictures of the incident.
  
  After the storm subsided, Subject3 was able to get a ride back to Bullfrog from a good Samaritan at approximately 1715 hours. Subject3 stated other items of value on the vessel included a Hero4 GoPro $600.00, knee board $200.00, wakeboard $200.00, tube $200.00, Ipod $300.00, Oakley sunglasses $400.00, $300.00 cash in wallet, 4 wetsuits $100.00 each $400.00 total, Stanley tool set $100.00, keys, purse, ID, credit cards for a total of $2700.00.
  
  Subject3 contacted Executive Services for recovery of his vessel. On 06/09/2015, the vessel was recovered and removed from Lake Powell. Ranger photographed the damage to the vessel which included scratches, cracks, and fiberglass missing on all sides, standing water in the engine compartment, driver seat broken off, bimimi top ripped off, and the steering column and electronics ripped out.