RedactedNarrative: On Saturday, July 18, 2020, at 1415 hours, I, Game Warden was notified via radio by my dispatch that there was a black and white ski boat, in the Narrows of Lahontan Reservoir, that was taking on water, with an unknown number of occupants on board and was requesting my assistance. I responded in my patrol boat to the area of the Narrows where the incident was reported.
  
   I observed a black and white Correct Craft Super Air Nautique ski boat, bearing Nevada registration numbers, with five occupants on board (4 adults, 1 child), being towed by another black and white ski boat. As I approached, the adults frantically waved their arms at me to get my attention and signal that they needed assistance. I maneuvered my boat so that I was travelling parallel to them approximately 15 feet off their port side, which allowed me to speak with the occupants. 
  
  The operator of the vessel, identified as Operator, told me that they had ran aground and he was taking on water and that his engine was completely submerged in water. Occupants 1,2,3,4 were occupants on board. Occupants 1, 2, and 3 were wearing Personal Floatation Devices PFD''s. I pulled four occupants on board my vessel, leaving the owner/operator on the damaged vessel in order to steer and pump out water. I was able to safely tow the damaged vessel to the North Shore Launch Ramp on the Fallon side of the lake. 
  
  I collected verbal and written statements from the Operator and Witness 1 and 2. They all told me that they were getting ready to wake board by Coyote Island on the Silver Springs side of the Narrows when they ran aground on a sandbar approximately 250 yards off Coyote Island. Operator told me that he was testing his wake setting controls before they began, the vessel was traveling 9.8 miles per hour and nobody was in the water at the time of the grounding. 
  
  Witness 1 told me that he exited the vessel to push it off the sandbar and inspect the vessel for damage after hearing a loud grinding noise. Witness 1 was able to push the vessel off the sandbar and observe that the prop and drive line mount had been ripped out of the fiberglass hull causing extensive fiberglass damage. The damage to the hull allowed the engine compartment to start swamping, Operator told me that his bilge pump was unable to pump out the water fast enough, eventually filling the entire engine bay with water. 
  
       I photographed the damage the best I could at the time and collected the required information I needed. I confirmed that the operator had not consumed any alcohol during the day and none of the occupants had been injured during the event. All the required safety equipment was on the vessel at the time of the accident. 
  
  I contacted Operator on the morning of July 20, 2020 to request to finish photographing the damage now that the vessel had drained completely. He agreed. I met with Operator at his residence to finish photographing the damage to the vessel. 
  
       I attribute decreasing reservoir water levels and lack of operator's knowledge of Lahontan's navigational hazards to be the leading causes of the accident.