RedactedNarrative: I, conservation officer, received a phone call at approximately 2230 hours on the night of may 7, 2020 from state radio dispatch concerning a boat accident on the missouri river. I contacted pottawattamie county sheriff's deputies on scene. 
  
  The deputies advised a small john boat had capsized near goosehaven loop by honey creek, ia at approximately 2130 hours. The boat operator swam to shore but the other passenger was missing. The deputies advised there were signs of impairment with the boat operator. With impending weather, i decided to suspend investigating the accident until the following morning. I advised the deputies on scene that due to a missing person, possible fatality, and possible intoxication, a warrant for operator's alcohol levels was needed and supplied the proper iowa code sections to the deputies. 
  
  The warrant was obtained and it was later found out that operator's blood alcohol content was 0.180. Operator told the deputies on scene that he was the only one operating his boat with occupant as a passenger. He stated that he was "whipping shitties" when the boat capsized. 
  
  The next morning, may 8th, 2020, i along with other conservation officers responded to the scene. I briefly spoke with operator. Operator stated he was on his boat with occupant and they had capsized out front of goosehaven loop. 
  
  Operator swam to shore and last saw occupant holding onto the back of the boat. Operator swam to shore and crawled to his cabin on the northern side of goosehaven loop where he told his significant other to call 911.  I then searched the river along with numerous other conservation officers both visually and through the use of sonar equipment for the missing boat and occupant.  During the search, i was informed that a private individuals had located a boot believed to belong to occupant. 
  
  I went to the location across the river from surfside restaurant at approximately 41*23'26.9052''n 95*56'10.2257'' w. I met subject who had located the boot and i asked him to send me the pictures he took prior to moving it. I then seized the boot as evidence and, after confirming with occupant's father that it was his, placed the boot into evidence. Later in the day, a lifejacket was recovered near goosehaven loop. Operator denied that it was onboard his boat, but later, occupant' father, said it had belonged to his son. On a later date, occupant’s father showed me another lifejacket similar to the one found that he had bought for his son on sale. I then seized the lifejacket as evidence.
  
  On june 9, 2020, i logged both pieces of evidence out of dnr custody and transported them to pottawattamie county sheriff's department. I transfered chain of custody to the sheriff's department.
  
  The search continued until occupant' body was located by a fishermen on june 1, 2020 downriver in cass county,nebraska. On september 1, 2020, i was advised by the pottawattamie county sheriff's office that a boat was found on august 24, 2020 matching the description of operator's vessel. I was given pictures and the location of the boat. The registration decals matched the pictures of the boat given to me by operator. 
  
  On september 4th, 2020 i along with water patrol officer, attempted to locate the boat, but none was found and someone may have already removed it from the river. The pictures of the boat show a gas tank, black and yellow paddle, and numerous lifejackets. A mercury tiller drive motor was still attached. The vessel and all of its contents were covered in mud and the boat was upright.
  
  Both individuals were not wearing lifejackets and alcohol was used by each individual.
  