The man who died after falling into Clattercote Reservoir on Tuesday has been named as Tony Perry, 74, originally from Banbury.
Mr Perry who was a keen fisherman, is thought to have suffered heart failure before falling into the reservoir shortly after 10am.
Fire crews from Hook Norton and police attended the scene and a fire service rescue boat was deployed.
The incident is not being treated as suspicious.
If you wish to pay tribute to Mr Perry post your comments to firstname.lastname@example.org