Sean Diver, 39, from Strabane, had been missing since January.
His body was recovered at Newbuildings by a community search team.
His death is not being treated as suspicious, police said.
PSNI Chief Inspector Ivor Morton said: “Police remain in contact with the family of Mr Diver and I would like to take this opportunity to offer my sincere condolences to them and Sean’s friends at this difficult time.”
