City reinforces our last line of coastal defence

THE GOLD Coast’s sea defences are getting a major boost as the City of Gold Coast starts an extensive program to upgrade sections of the city’s seawalls. (Picture: Absolum Photography)

The seawalls follow what’s known as the ‘A-Line’, our official coastal boundary as defined by the Queensland Government, which runs parallel to the foreshore.

Work has begun on replacing a 30-year old section of the wall in Miami, and a new section of wall is underway at Palm Beach.


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The project is part of the Three Point Plan for Coastal Protection, fast-tracking the implementation of 30 years’ worth of beach protection works under the City’s Ocean Beaches Strategy.

Mayor Tom Tate says the investment in upgrading seawalls reflects the priority that the City has always placed on coastal protection and management.

“Our seawalls are our city’s last line of defence. They’re a shock absorber that protects our buildings and property on and behind the beachfront during severe storms. This work will further safeguard our coastline, our homes and businesses,” he said.

“We’ve put ourselves in a strong position on the Gold Coast – our beaches and dunes are in great shape, and when our coastal defences are really put to the test, we have a seawall that’s designed to resist a one in 100 year intensity cyclone.

“We’re investing in getting the work done now so that in extreme weather events, we’ll limit the risk to property and the kind of multi-million dollar losses other coastal cities in the world have had to deal with.”

The City’s long-preferred option for seawalls is to maintain a natural dune system, so that the wall is buried below sand most of the time, only becoming exposed after large-scale erosion when sand levels are significantly reduced.

The new section of seawall at Miami is next to Thorn Park, Marine Parade. Work has begun north from Santa Monica Road, to protect a section of coastline along Marine Parade.

After the seawall has been buried by sand at Miami, the foreshore will be reinstated with paths, furniture and vegetation similar to those at the northern end of Marine Parade. Work is expected to be complete by June 2014.