Coastal development

Large quantities of sand have either been 'locked up' or removed from the beach system as a result of coastal development. Many of Adelaide's coastal suburbs were built on an extensive system of coastal dunes or, alternatively, dunes were used to infill coastal swamps to provide land for housing and Adelaide's airport. Land was also reclaimed along the Lefevre Peninsula to establish the suburb of North Haven.

Had development been restricted to areas further inland, the natural recession of the coast would have been able to continue for many years from Brighton through to Semaphore, with the coastline alignment progressively adjusting inland at southern beaches.

The natural littoral drift of sand to the north would have been maintained, but the rate of drift would have gradually reduced as the coast became parallel to the prevailing wave crests.

More information 

Refer to our reference material page.