Adelaide Coastline Sand Carting May 2004

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Presentation transcript:

Adelaide Coastline Sand Carting May 2004

Glenelg Beach Removing 2-3 metres depth of sand Beach width reduced by 100 metres

Looking north towards the breakwater Glenelg Beach Looking north towards the breakwater

Looking south towards the jetty Glenelg Beach Looking south towards the jetty

Holdfast Shores Marina Cause of the buildup of sand is the marina entrance protection with a breakwater

South Glenelg – sourcing the sand Stormwater outlet – Glenelg south Public safety is a concern with heavy earthmoving equipment Rock wall and narrow beach at the southern end of Glenelg

Moving sand Offshore Bar is no longer a Tombolo Dredge is still working

Loading and moving sand from Glenelg Beach

The Broadway – Protecting the old seawall With a new section of rip-rap wall Note: geotextile filter, gravel base before large rocks are set in place. Concrete wall has been increased in size Note also the beach width at high tide on a calm day

Adelaide’s narrow beaches Adelaide’s narrow beaches. Hove on the left and Somerton on the right Note that it is high tide on a calm day Issue: the narrow beach is the result of roads and houses trapping the sand of the coastal foredune. Rock walls are protection for the structures we have built along the coast.

Brighton Beach Looking north High tide on a calm day Seacliff Beach and dune buffer looking south

Seacliff Sand from Glenelg is being dumped in piles on the beach to be levelled off by the waves

Seacliff Sand from Glenelg is being dumped in a huge mound on the beach between Seacliff and Brighton