RedactedNarrative: On 06/07/2020 vessel #1 arrived in Peck Creek on Lake Pueblo Reservoir. Vessel 1 operator had turned off the engine and the vessel was drifting when one of the passengers (victim 1) announced to the group that he was jumping in to swim. The operator and other passengers told vic 1 to put on a PFD and he declined. Vic 1 jumped off the boat into the water. As he started to swim back to the boat he started to struggle. a passenger observed this and jumped in to assist vic 1. He was able to grab vic 1 just as he went under the surface of the water. Vic 1 was loaded back onto vessel 1 and CPR and life saving procedures were initiated. Vic 1 was airlifted and later died at the hospital.  Officers noticed a large amount of alcoholic beverage containers on the Vessel that Victim 1 had been aboard, and it was noted that the number seemed large for the number in the party.