RedactedNarrative: On August 20, 2016 at 1613 hours I was on patrol at El Dorado Reservoir in the area of Beamis Creek when dispatch advised there was a collision between 2 vessels on the lake.  I advised dispatch I would be on route to the marina and was contacted by radio by Officer that he would remain on land in the area in case they came to shore before I reached them on the water.  Dispatch advised the boats were North of Veterans Point.
  
  I boarded my boat at 1620 hours and went to where the accident was.  I was advised by Subject the injured rider was on another boat and heading to Shady Creek Marina where they would be met my EMS for treatment.  I advised Subject to meet them at the marina and I would take care of the other vessels on the water.  I arrived in the area of Veterans Point to see 2 red and white PWCs floating in the water.  One of the PWCs was unmanned and the other had visible damage with a female sitting on it.  I approached the female and asked if she was in any way injured and she responded no.
  
    I then asked if the PWC she was on was operational and she replied it wasn’t.  I asked what the other vessel involved was and she pointed to the other red and white unmanned PWC.  I asked if it was working and she replied it was.  I advised her to board that PWC and take it to the marina and we would pull the other one in and meet her there.  I pulled up by the other vessel that was floating and asked if the witnessed the accident and they replied they had.  I asked what happened and they stated their boat had a dead battery and one of the PWCs slowed and turned sideways to see if they needed help and the other PWC must not have seen because it ran into the other one and went airborne over it.
  
  I arrived into the marina at 1645 hours to see EMS still on scene and the Officer Subject.  I met with the woman involved in the accident again and asked her to board my boat.  I asked her if she had anything to drink prior to the accident and she stated she had.  She stated she had just a little to drink a long time before the accident.  I asked her to remove her sunglasses and ran her through a couple of sobriety tests and couldn’t detect any signs of impairment.  I then asked if she would be willing to fill out a written statement about what had occurred during the accident and she stated she would.  
  
  I asked Operator1 what had occurred verbally and she stated she was following (the other driver) and didn''t notice he had slowed and turned sideways until it was too late.  I informed Operator1 I would be filling out an accident report and would also be providing a report to the CA.  I told Operator1 about prohibited operation and how not leaving enough space between another vessel to prevent an accident is a form of prohibited operation.  I told Operator1 I would be filing a charge for prohibited operation.
  
  While I was talking to Operator1, Officer Subject had left the area with the wife of the victim to retrieve the trailers for the PWCs.  I collected the information of the other rider.  When Subject returned and the PWCs were loaded, I took pictures of the vessels.  I cleared the scene at approximately 1710.
  
  On August 23, 2016 I learned operator2 broke 2 bones in his left leg on the lower leg and is expected to make a full recovery.
  
  Nothing further to report.  Refer to KLER report 20160440-037 for other questions.