We had a massive rain fall around 1984 when living in North Rose Bay. The intense rainwater coming down the hills of North Bondi Heights, Dover Heights & North Rose Bay finally collected along Old South Head Road and from the intersection of Newcastle Street & OSH Rd, the flood of water built up along Newcastle Street in-between the Australian Golf Course and the homes on the east side.
The fast massive build up of water turned into a wave flowing down Newcastle Street and reached something like 4 to 6 feet in height (possibly higher) by the time it hit New South Head Road Rose Bay and smashed through 6 or so shops on the north side pushing everything collected into the Bay.
From Rose Bay North near Vaucluse I went down the hills to witness cars floating along New South Head Road. One one was a Rolls Royce with an elderly woman hanging out the window screaming out "my jewellery, "my jewellery", :crazy::crazy: - No concern for her life, just the safety of her expensive jewellery. Should have helped her and got rich quick.
Parts of Dover Heights/Rose Bay North were severely damaged by the intense torrent of rain water. Huge excavation sites and deep channels appeared.