RedactedNarrative: I United States Ranger state that on July 11 2019 while on duty in Glen Canyon National Recreation Area. At approximately 1740 hours, I along with United States Park Ranger was dispatched to buoy 12 by the "Castle Rock Cut" to locate a blue over white Malibu ski boat, that hit a rock and is taking on water. There was reported eight adults and three children on board with no injuries.
  
  The vessel was traveling south just north of buoy 14 piloting toward Wahweap Marina at approximately 10-20 miles per hour. There was 11 people on board.
  
  A southward wind made the lake choppy, according to OPERATOR he was staying closer to the canyon walls to try and avoid the rough water. OPERATOR observed a danger marker buoy and identified the hazard, OPERATOR then steered the vessel to the right with a more north by north west heading, toward the closer canyon wall. Under the surface of the water is a series of large rock islands in this area. While successfully avoiding one hazard OPERATOR ran the vessel over a rock island that was just under the surface of the water. The vessel came to a stop all 11 passengers remained in the vessel, the vessel began to take on water. When we arrived on scene both starboard bilge pumps were pumping out water at a steady rate. I confirmed that no one was injured and everyone was accounted for. After confirmation  of that I instructed all passengers to dawn life jackets.
  
  Ranger and I found a soft sand beach about 200 meters away. We boated back to the crashed vessel and arranged for a side tow. We tied the vessel to the port side of our patrol boat. Ranger safely navigated to the soft beach where we assisted the party in anchoring their vessel for the night. We transferred all gear and suppplies needed, as well as all 11 passengers on board.
  
  As we boated back I determined that alcohol was not a factor in this accident, this was a mix of bad weather, and lack of knowledge of the area.
  
  END OF REPORT
  