RedactedNarrative: At 1930 hours, I received a call from DNR communications of a boating accident. DNR communications advised me the Frederick County Sheriff's office was on scene at Lake Linganore and Cpl. of the Sheriff's office wanted me to call her. I contacted Cpl., who advised me they were on the scene at the Lake Linganore Dam and there was at least one fatality involved with the accident. I made contact with Sgt. about the situation at Lake Linganore and had DNR communications notify the Special Operations DO to contact me. Sgt. called me, I advised her of the situation and she told me she would contact an investigator to assist with the investigation. On the way to the scene, I was advised there had been nine people on the vessel and eight of them had been transported to Frederick County Memorial Hospital by EMS units. I updated Sgt. and he advised me he would call Ofc. back out to conduct interviews of the victims at the Hospital to ascertain what had happened on the boat. 
  
        I responded to the area and met with Cpl., Frederick County Deputy,  on the scene at Lake Linganore. She advised me a boater had taken a group of kids (8 teenagers) out on a pontoon boat ride as part of his daughter's sweet sixteen birthday party. She said Operator had two other people (his daughter and her friend) on the boat originally, but then dropped them off and picked up two other teenagers before the accident. She also advised Operator had borrowed the boat from a friend. She stated Friend had allowed Operator to take the boat, but had advised against it because of the weather. She told me herself and another deputy had been in the vicinity of the Dam and had been advised by a private citizen of a person waving from the top of the Dam. She saw several subjects clinging to a log in the spillway and another girl at the base of the spillway. She also saw the victim clinging to a rock at the downstream end of the catch basin. She saw Operator moving, but then saw him slip under the water and not come back up. Three of the victims had been stranded inside of the spillway and had to be rescued by the MSP helicopter (Trooper 3). Two of the victims had jumped out of the vessel prior to it going over the dam and had swam to shore and the other three had washed down the spillway into the catch basin and been assisted by deputies and EMS personnel. Cpl. advised me divers and boat personnel knew where Operator's body was located, but had not been able to recover him yet. Cpl. advised me the victim's wife was on scene and knew her husband had not been found at that time. The Sheriff's office had advised her he was under water and they were trying to retrieve him. 
  
        I went with Cpl. to the top of the dam near the spillway to look at the vessel. Cpl advised me the boat was down in the spillway and had been trapped perpendicular to the current. I observed the vessel, a pontoon boat, was trapped against the wall of the spillway, parallel to the current and was wedged against a rock (see Ofc. report for attached pictures). Cpl advised me the boat had shifted positions, since the incident had begun earlier. I was also advised a dog had been on the vessel as well and was missing. Cpl. and Sgt. arrived on scene and I brought them up to date on the status of the situation. Since the boat registration numbers were not visible at its location in the spillway, I called DNR Communications and had them check for any boats registered. The only boat registered to him was a 20' Bennington (MD REG: 5923 CG). Friend, later confirmed with Cpl., the pontoon boat in the spillway was the Bennington boat. 
  
        At approximately 2250 hours, the boat teams were able to retrieve the body of Operator from the water and he was pronounced dead at 2304 hours by  Medic 1 from Frederick County Rescue Services. wife of the deceased, positively identified the body as that of her husband, Operator at 2400 hours. Cpl. had notified the Medical Examiner's office and upon their arrival on