The finished work is 100 metres long by 13 metres high. The area has been slowly receding due to storm damage - theres evidence of erosion dating back to the 1920s - while at the same timebeing intensely researched by coastal geographers. The seven metres protruding above sea level is vertical, even going beyond vertical for the final metre to prevent wave overtopping. Man, that'd get old real quick, happy to pass. Engineered to Australian Standards. Turned this place into a concreters paradise. @dawnperiscope A quick trip Todos Santos way during a belting nor'west swell. It is worth remembering that this council, as Warringah, council, was twice dismissed for corruption and incompetence. All the sand has moved south east where previously there were great rock lagoons there is now 100 metres of sand dunes. I recently moved house [Northern-Rivers nsw] and seal-level rise was a very serious consideration of mine. This is associated with above-average wave heights related to Tropical Cyclone Seth and also elevated ocean water levels associated with very high tides, Mr Horton said. https://www.planning.nsw.gov.au/Policy-and-Legislation/Coastal-and-marin "The scheme operates along the entire NSW coastal zone except for the Greater Sydney metropolitan area, identified as between Broken Bay (Central Coast) and the Minnamurra River (south of Shellharbour).". Any example around the world that have worked with out wrecking a beach but holding back erosion in built up areas ? The sheer number of cables there suggests to me that an offshore reef proposal would be unsuccesful. So would you like to inform me as to WHO designed this monstrosity if it wasn't an Engineer? Im worried they will put one of these in at a beachie around here as the carpark and rd are imminent to be taken by the ocean and Im sure that will dramatically change the profile of that beach. besides Id rather just shout at my computer. BB who is getting the sand which has gone from here? During periods of low swell energy, sand accumulates on the beach, widening the profile and forming a natural barrier for when storms and large waves erode the coastline. It's propped up by the NSW and local governments way beyond the importance or value of that stretch of private land. There is a significant risk that, as Craig suggested, end wall erosion will simply move the problem and lead to calls for extending the wall. Done well they could create added atmosphere to the beach life we love to live here for. Japan may be a perfect case study. The legacy of that approach will be something future generations will have to live with.. Could be some good entertainment next time some serious swell hits. Futile. Further to the north, sand that was built up in front of properties has been scoured away leaving an eight foot drop-off. "Sea walls do nothing to ensure the ongoing conservation of the beach in front of them," Mr Donohoe told crowds. https://eservices.northernbeaches.nsw.gov.au/ePlanning/live/Public/XC.Tr First red light! On top of this they have places sand band grounds out perpendicular to the sandunes. increases social amenity". It's good to see some enlightened input from Brendan and Angus, both of whom have extensive experience in coastal management from planning and engineering backgrounds. I asked a mate who works at MHL this exact question. Dates announced for Spencer Frost and Guy Williment's film shot in Russia's far east. that concrete is a lovely blank canvas for some choice words. There's been a lot of work done to gain a better understanding of the value of the beach re both market and non-market economic benefits. The majority of these companies are legitimate businesses set up by Yakuza. Harmer and husband have been protesting for 14 years to stop surf barrier She led 2002 lobby against $12 million wall proposed by Warringah council A monster Sydney storm wiped out properties. As a result, if the sea erodes the shoreline (and the tidal level moves inland) it encroaches upon land once part of someone's private land title. 30 years of volunteers doing Dunecare (eg. I guess that makes offshore options quite limited, So I'm a little confused as to why there are hardly any real solutions put forward to deal with coastal erosion in 2021, despite our huge body of scientific knowledge regarding the issue. Just look at the surfcams tommorow morning, will be another case of ugly easterly that will make problems worse. a report a number of years ago by the Great Ocean Road Coastal Committee, GORCCshowed there were more than 47 areas that were of immediate concern where the ocean would cut the road. Thats tens of thousands of homes). Thanks Craig aod if you are THE Jody P, yes you are a ledge. How many parts of the great ocean rd could have to close and the emergency that would lead to. Taxpayers pay millions of dollars on a asset that will require '000s thousands if not millions of dollars in annual maintenance to protect the value of a tiny handful of multi-million dollar properties owned by multi-millionaires who thought nothing of buying a property directly on a beach for a solution that only kicks the can down or up the coastline for some one one else to deal with. This seawall will not only protect our homes but also Pittwater Rd, and the many communication and public services installed under it, from inevitable future storm events. I am looking at it but there is probably someone better qualified out there. Unlike politicians, scientists are usually very open with sharing their knowledge and data, to help inform the public. Sorry to sound pedantic but we should clarify exactly what we mean by "Hard Structures" as it's too general a term. brutus Collaroy was not a typical situation. The beach has remained under threat since that time, with additional erosion occurring during subsequent storms. "Protective works are a far preferable measure to a vertical seawall," he said. It will improve beach access. Im sure Fraser Island will give some back.. Heard rumours that the Wamberal Seawall has got green light hopefully the central coast council read this article. A seven-metre high wall erected to protect beachside mansions from being washed away has sparked debate among locals in a wealthy Sydney suburb. Amongst other things, it is illegal to "establish, maintain or use a spoil ground or other ocean disposal point (including dumping materials at sea)". The seawall is probably built over them. >> and the ocean will wash it all away again in the next big swell. I cannot see how can this be a feasible long-term strategy from the cost perspective. If that was the only report they did then it would be good to know on what scientific advice, if any, they changed the plan. For some it. The only way now is to harness the power of coastal construction science and engineering. This is the only plausible outcome from the hard seawall construction and the engineers would have known this. Step 5: Construct the Seawall. as the article states coastal erosion has been known since the 20s in that area and has been studied meticulously ever since. I tear up and swear to myself. Perhaps the omission was because in 2002, protestors, led by Brendan Donohoe and Surfrider Foundation founder Tom Kirsop, formed a line in the sand stretching from Collaroy to Narrabeen opposing the construction of any seawalls. Seeing and continuing a precedent that the government should pay and protect small groups of private landholders while the property owner reap the benefit and profit of rocket fuel property prices. "Update from Council on possible site visit to Northern Beaches: Casey Johnston advised a site visit to Narrabeen-Collaroy is being canvased for early December 2021 to allow review of their seawall in construction. Its brutalist engineering, says Gordon frankly. Building a vertical [with over-top] wall is about as insane a design as you can get, as stated and proven by all the intelligent people on this forum. Apparently there was a buy back scheme that faltered in the early 1980's when the department of public works ran out of money. Ocean Pools > Skate Bowls > Wave Pools > "Boomer'z Backwash Booger Bowl", Crew requested the Turning Japanese Tool Box, History of Collaroy Erosion / Wave Pools / Tow Surfers. As good as a house on the beach would be imagine how much more beautiful the East Coast would be with a 1km + building buffer from the coast depending on the terrain. As mentioned in an earlier post, I place the blame fair and square at coastal engineers who design and approve these ill-fated designs. I dare say the neighbours are on notice too. consultant reports and community consultation no doubt funded by state money. Or boarding a jumbo jet to go for a surf and buy the latest board all things responsible for the needing of the wall in the first place. The process is cyclical, however short-sighted development upon the foredune, built during times of a wide beach profile, impedes the system. We all have valuable opinions, but they need to be separated from facts at all times, especially when it comes to Journalism. RFS DU SOL's new album cover to Surrender is on point.. Collaroy sea wall 1.8 mts higher than the Berlin Wall https://i.imgur.com/DuHM6zJ.gifv In the others, you can see a part of the wall under construction. Surely going to get all crazy reverb and backwash stripping their sand more rapidly as well. Might discuss that with @surfriderfoundation and Surfrider Foundation Sunshine Coast, and those people and localised groups finding themselves in positions of having to fight this idiocy. The market knows the insurance companies know this. Re: "I don't think that would preclude construction of reefs". Most swells will have to wrap around the rock/reef headlands as well as cape Otway before this and nicely wrap the swell into the bays and our coast has been shaped like this for however thousands of years so it is used to it, and this is what us humans observe as the normal state of the beaches as they are quite predictable and dont change much around here. First completed by the French in 1735, the Pondicherry seawall reaches a height of 27 feet above sea level. Collaroy has a long history of property erosion, yet a century after it was first documented theres no consensus about how it should be managed. On Saturday November 27th hundreds of locals came down to Collaroy Beach / North Narrabeen Beach in grim weather conditions to protest the monstrous 7 meter . Not off topic JS, wouldn't be surprised if there is a hyperlink to that video in the sea wall approval document!. nothing that a annual maintenance fee paid for by the taxpayer can't fix. They are trying to protect a life saving club, which footings lie directly on the sandunes that eroded due to not only the waves but also the changing in direction and position of the mouth of the river (natural process). The NB has always excelled at extreme ugliness. Much better to work out a solution where the public doesnt lose their beach as per collaroy, but councils/government do need to help landowners. GCCC's approach protects both private property and public beach amenity without any visible structures on the beach. Interesting to see if the slowed (design of) sand migration has had any knock-on effect for the likes of Tallebudgera- Burleigh and beyond. Market value is driven by what people are willing to pay for it. Thanks Stu, didn't even know such a thing existed here. A "macabre" scene greeted surfers followinga mass kill of invertebrates. I can't believe that those structures have been built in 2021 and that the legislation still hasn't been amended to counter the property rights of the owners. 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