Whilst I have been on our early morning poodle walks during the 8 months or that we have been living at this seaside town I have been tentatively exploring the coastal erosion around the Victor Harbor's beaches east of Rosetta Head. This is tentative to the extent that I am not actually scoping for large format photography, nor even picking up from where I left off when we used to come down to Victor Harbor on the weekends.
I can see that coastal erosion is a problem as the sand dunes are eroding along the Victory Harbor beach and Hayborough. Coastal recession is the process by which “soft” (e.g. sandy or muddy) shorelines tend to be eroded landwards under a rising sea level.
The current solution adopted by the Council is beach replenishment--that is, taking sand from Kent Reserve to the eroded beach along The Esplanade. This is a short term fix as the sea eventually washes the buffer of new sand away.
If the old sandbag sausages on the beach are ineffective, then the washed up seagrasses during winter are helping to stop the sand dunes from disappearing into the sea. The seaweed accumulation dissipates naturally over the summer months so it is not a solution to the rising sea levels that are associated with the drier conditions for southern South Australia from climate change.
One of the most serious consequence of rising sea levels—is the recession of ‘soft’ shorelines. This recession leads to increased foredune damage and recession, whilst the increasing aridity will mean slow natural recovery from damage to dune vegetation. Climate change exacerbates coastal recession and flooding from the storm surges since the storms ride on higher sea levels.
From what I've seen on the various poodlewalks the sandy shorelines around Victor Harbor are receding. A lot of the coastline around Victor Harbor is vulnerable, and it is susceptible to recession under adverse conditions such as sea-level rise. So the coastline will realign as the sea levels rise.
Is it possible to future-proof these coastal areas from rising sea levels and extreme weather?