RedactedNarrative: On 07/27/2014 at about 4:30 pm (cst)o1 and p1 arrived at the moreau river in dewey county, south dakota.  P1 stated that p1 and o1 had consumed about 4 beers and smoked marijuana.  O1 and p1 unloaded v1 on the moreau river near the end of bender road in dewey county, sd.  O1 and p1 were going fishing and were going to troll crankbaits.  The wind was blowing 20-30 mph.  O1 and p1 were in the middle of the moreau river and o1 commented how far from shore they were.  O1 tried to turn v1 with the electric trolling motor and during the turn got his fishing line tangled in the propeller of the electric trolling motor.  O1 exited v1 and tried to untangle the line from the motor and let go of v1.  The wind blew v1 away from o1 and o1 was not able to catch v1.  O1 told p1 to hurry up and p1 tried handing o1 a fishing pole to grab onto.  O1 was unable to grab the fishing pole.  The wind blew v1 around and p1 lost sight of o1.  P1 tried to turn v1 around and could no longer see o1.  P1 said a wave came over the top of v1 and filled v1 with water and v1 turned over in the water.  P1 grabbed two pfd's and tried to swim to o1 and said o1 was not there.  P1 put on a pfd and tied a second pfd around his waist and started swimming.  P1 said he could not swim against the waves and swam parallel to the shore until he could cross.  P1 said he swam for about to 3 to 4 hours and had not seen o1 for the same amount of time.
   
  Bac was not done on deceased.  If i can get a bac on passenger, i will record on this report.