RedactedNarrative: On July 30, 2016 I, Game Warden was aboard my vessel on patrol at Lake Mead National Recreation Area.  At Approximately 5:18pm, I responded to a call from the National Park Service (NPS) dispatch about a vessel in need of medical attention with their current location just off of Castle Reef.  (36.0614, -114.7377)
  
  The description given was a conscious female adult with head trauma aboard a black, yellow, and white Mastercraft boat.  Upon arriving to the general area near Castle Reef, I contacted NPS dispatch and was told the vessel with Victim aboard had driven to Hemenway Harbor to meet the ambulance.  I continued to Hemenway Harbor.
  
  At approximately 5:37pm, I arrived at Hemenway Harbor and observed the described vessel tied to the courtesy dock with five occupants, the NPS ambulance at the headwalk, and NPS Rangers standing on the courtesy dock.  I pulled my vessel up next to the involved vessel and tied off.  Ranger informed me Victim was currently loaded in the ambulance along with her boyfriend.  At approximately 5:38pm, she was transported to Boulder City Hospital.  Rangers cleared from the scene.
  
  Subject told me they were traveling across the lake after spending about 5 hours near Sandy Beach.  Victim was sitting in the rear seat on the port side of the vessel.  Subject stated they were traveling about 15-20mph near the Castle Reef area when a gust of wind and a large wave hit his vessel.  
  
  Winds, at the time, were approximately 15-25mph out of the SE with waves approximately 1½ - 2½ feet in height.  He said when the wave and gust hit their boat, they all noticed that Victim bent forward at the waist and grabbed her head.  
  
  Subject noticed that one of the wakeboards had fallen from the rack on the wakeboard tower and was now in the water.  After seeing Victim was injured, a call was placed to 911.  Subject left the wakeboard behind and drove to Hemenway Harbor.
  
  Subject2, being an EMT, noticed that Victim had a large laceration on her head.  Subject2 said it was from her hairline, down her forehead, and over her left eye.  Subject2 stated he could see her skull.  He further stated he believed Victim had also received chip teeth from the board hitting her in the head and face.
  
  Three people corroborated Subject'' and Subject2''s description of the incident with Subject3 stating she had the best view of the accident.  I asked Subject, Subject2, and Subject3 for their written statements.
  
  I asked Subject about alcohol consumption from the group and he stated there was a 35 pack of Coors Light on board and he only had 2 beers for the day as he was the designated driver.  I performed a Horizontal Gaze Nystagmus test on Subject and he showed no clues and no signs of impairment.
  
  I took note of all pertinent information for an injury vessel accident and cleared from the scene.