RedactedNarrative: On September 9th, 2014 at appoximately 1545 I, Park Ranger, was dispatched to a boat taking on water by Anchovy Point in Glen Canyon NRA.  I boarded vessel 244 and activated by emergency lights and headed towards Anchovy Point.  When I was responding to Anchovy Point I spotted a vessel with Utah registration that had been involved in the accident.  The captain of the vessel beached on the south side of the channel approximately 1/4 of a mile from Anchovy Point.  All the occupants of the vessel were on shore and when asked if they needed medical attention they all stated that they did not need medical attention.  The captain stated that they were on their way to go to see the dam when they heard a loud noise and felt a hard jolt.  Operator1 stated that he believed he hit a rock.  Operator1 stated that the boat began taking on water and that they paddled their way to shore.  I informed Operator1 of a service that would come tow his boat back to Wahweap Marina and Operator1 stated that he would like for them to come tow his boat back to Wahweap Marina.  The tow boat arrived and towed the vessel back to Wahweap Marina where I took pictures of the damage.  The lower unit of the boat had been dislodged and upon Operator1''s request a mechanic removed the lower unit and towed the boat.