Queen Elizabeth II at the official opening of Backwater Reservoir on 9 Oct 1969 By Graham Brown October 8 2019, 1:16pm October 8 2019, 1:16pm Share Queen Elizabeth II at the official opening of Backwater Reservoir on 9 Oct 1969 Share via Facebook Twitter Linkedin Whatsapp Messenger Email Post link Copy Link The Queen at the official opening in 1969.