This just a year ago was a nice Sandune. There's only a loss to be made for the purchases. Comparing the swell to those of last year it wasn't of any major significance but it shows the futile efforts trying to protect property with a hard structure. Yea I agree with this. My 2c on the buy back scheme - NB Council won't have 50+ million sitting around to buy them all back at once (and NSW Gov wouldn't be in a hurry to give them the rest) so they'd have to do it say a couple per year, but at the same time, that leaves the others who can't be bought back vulnerable and at risk of further destruction if another mega storm decides to show up, which in the current climate you'd have to think is pretty likely. Painful to see such a blunt object of a solution. I cannot see how can this be a feasible long-term strategy from the cost perspective. https://www.sydneycoastalcouncils.com.au/sites/default/files/JRCorkill_A(2)_Prop_L_Rev_67-84.pdf, yes, Blindboy, I am guessing they had absolutely no input on the final [or initial] design what-so-ever as they were only used as a consulting service by the Coastal engineers. Your browser has JavaScript disabled. My NSW water buddy says MHL are coyboys. Criticism of the debris left on the beach, the erosion as the sea ran up against the wall and drew away all the sand during January 2022 swells and the manner in which these works have been carried out prompted council staff to investigate a number of times during the heavy swells, and has been under regular inspection since then. Honestly he might be correct based on the Manly erosion hahhaa. Craig Brokensha on the Sunshine Coast there is a similar 'future' proposal for a rock wall between Alexandra Headlands and Maroochydore beaches. That's crazy stuff. Unfortunately groynes or artificial headlands are not part of the certified Coastal Zone Management Plan CZMP (2014). Great article.. https://www.smh.com.au/property/news/coastal-properties-at-highest-clima @Craig They are a method of hard engineering. (9News) But the structure has divided locals, with many describing it as an eyesore, and there are concerns it may wipe out the beach entirely. Super difficult problem, maybe councils could buy beachfronts then lease back the properties. And there's no risk. My guess is that their engineers took a different view of how to best manage the situation. Spot on. This is a big money problem way beyond the scope of local councils. If a construction like that ends up being the only realistic option then so be it, but at least they need to be transparent about how they got to that point, and ideally accountable in future if it goes south. Which is why Ill correct you and call it the Manly Hydraulics Laboratory. Went down for a look and its a fucken disgrace. I posted links to the relevant council pages in the previous story. On the release of his latest edit, R-Cal chats to Swellnet about love and other acrobatics. I am thinking that sad as it may be, we will never be able to turn back the clock and have a natural passive coastline of Sandhills and trees. On the release of his latest edit, R-Cal chats to Swellnet about love and other acrobatics. If they were 100% against it but felt they had no choice but to design/sign it, then they simply have no morals/ethics/backbone. Perhaps off topic in relation to the above story but thought this video was interesting in regards to how certain structures change the amount of erosion and inundation behind structures from wave/tidal run up. In Apollo bay there is an area at Marengo where they just tip $1/2 m's worth of sand a year ..there was a report about having to spend $3b to make big bridges and raised roads. A quick Google informs me that they are part of the State government, either Planning or Public Works, which was news to me because its mainly staffed by UNSW academics and is associated with the uni as a research centre. I wouldnt have thought there would be much fetch? 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. Spot on tango. The seawall is protected from the direct onslaught of waves by rows of granite boulders which are reinforced every year to stop erosion. The Collaroy Beach coastline on May 6, 2016 before major storms swept the shoreline. 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). A number of properties along the oceanfront from Narrabeen to Collaroy were seriously endangered by erosion during a large storm swell in 2016. When a hard structure is introduced to the equation we see an increase in reflective energy andturbulence, slowing the accretion of sandwhile also acceleratingerosion in storm conditions. Any example around the world that have worked with out wrecking a beach but holding back erosion in built up areas ? bit of a worry but, when you buy a nice piece of land by the ocean in high risk erosion zone..why do tax payers have to buy the property back,,,surely the owner knew the risks ? !.Basic, crude, primitive, a fcukn disgrace and no regard for the beauty of the areajust shit!.Year 7 school project standard. Lol. Much bigger. Should have taken the high road. She had reigned as Queen for 70 years. >> and the ocean will wash it all away again in the next big swell. A much higher amplitude as well. Of the people that Swellnet spoke to, the opinions of how we got to this point swung from nefarious (It was rushed through during COVID because they knew people were occupied) to inept (It was signed off by a mid-level planner with no knowledge of coastal processes). For some it. What they fail to mention is the massive corruption that's involved in awarding these contracts and the fact that the construction companies themselves for the most part, are predominantly Yakuza. At this point, no-one can say if any consultation occurred, though the cynical view is council ticked the box by distributing flyers to the immediate neighbours, all of whom would want similar works built to protect their properties. We took the easy way, down towards the ocean and along on the back of the dune. Just ugly, clog up the waterways etc. the council up here is anti sea walls, but there is a thread that runs through them very much of "stuff the beachfront guys - they are rich". More than a year after severe storms damaged property in Collaroy, construction of a long-awaited sea wall is underway. I think this was done for the first DA, the sloping rock wall, rather than the vertical one that was actually built. "I really like living here deep in the bush, close to nature. I'd imagine brendan and surfrider will have that covered. good pics there willi, hadn't realised this. However, while they prevent further shoreline erosion, they do not deal with the causes of erosion (French, 2001). Please enable it to continue. 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. Interesting to see if the slowed (design of) sand migration has had any knock-on effect for the likes of Tallebudgera- Burleigh and beyond. We have the tools and imagination to manage the climatic challenge that beginning to show in my lifetime. This is not a defence of the structure or the owners, just recognition that the protection of the main north south artery on the northern beaches was a factor. The properties were bought in good faith, said one local who wished to remain anonymous, and the owners must feel an obligation for the authorities to protect them, but a seawall is last century thinking.. Plop! Thanks Stu, didn't even know such a thing existed here. (Those suburbs are just local ones I know a bit about. IT WILL NOT FUCKN WORK YA FLOGS.. 5/6 NE SWELL NOW.. a proper ECL .. will destroy it .. this frustrates me .. Edit: The estuary was in an area protected from the ocean and the cliffs only faced small wind chop and the tides. It shows how different combinations of coastal defences and wave and tide conditions affect overtopping and flood risk. So says Brendan Donohoe of the conundrum facing Northern Beaches Council in relation to the Collaroy beachfront. BB who is getting the sand which has gone from here? The root cause is building on the foredune. Please include direct and indirect costs. Thanks lilas. Having said that, nature usually finds a way to overcome most "permanent" human structures, and they often seem to forget that the wall isn't continuous.yet. I am safely 140m above sea-level now so that should be safefor a while hahaha. [Just like in Hawaii] A northeast swell generated by ex-TC Seth off Queensland,. A seven-metre high wall erected to protect beachside mansions from being washed away has sparked debate among locals in a wealthy Sydney suburb. This would be a better solution, I think. Yep. "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. Structures appeared. Just take the hit cost wise now and return the area to something close to its previous natural state. development, carparks & roads behind the hind dunes leading to biketracks, walkways, supporting the community including Drone footage over Collaroyafter the June 2016 'Black Nor'easter swell' (Photo: UNSW Water Research Laboratory). Surely a planned retreat is the only way forward. It is possible that this is part of the Silverback's Seachange pork barrel rollout. It only does BOUSSINESQ wave interaction and NOT sediment transport but you can still get a lot of good design-feedback Could be some good entertainment next time some serious swell hits. It's propped up by the NSW and local governments way beyond the importance or value of that stretch of private land. Buy backs should only be an.option when they contribute to an environmentally sound solution. Would be very interested in knowing what other options were considered and why they were discarded Yeah it's easy to get caught up in the house situation, but the road is at exactly the same height and built on sand too. You would never be allowed to build an incorrectly designed bridge, so why do these people get away with doing that at our beaches ? There are 11 parcels of public land (including the Collaroy carpark, South Narrabeen Surf Club, reserves and road ends) interspersed between 49 private parcels of land that require protection. Some relevant links from when I had a dig around before. Sorry to sound pedantic but we should clarify exactly what we mean by "Hard Structures" as it's too general a term. Cheers. We have over 40 years of combined experience installing, maintaining, and repairing seawalls on both residential and commercial properties. From their perspective building the wall before further erosion took place and moved closer to the road was another advantage as was disregarding the impact on the beach for a potentially more permanent solution. If that is to be avoided there needs to be a concerted effort to gain the support of the wider NB community to create pressure on the council to develop a more acceptable plan. Take the houses away eventually they would be building a wall to protect that road that you whinging moles drive around on for 20min checking it. This process must require wind over thousands of years but people and waves stomping over dunes seems like any dune system near a popular town once destroyed wont come back? So there is probably another DA somewhere. Proven time and time and time again that sea walls do not work- period. 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. https://www.swellnet.com/comment/772908#comment-772908. July 28, 2021 - 7:04AM. Given Council has already completed protection works on public land, and there's been a lot of talk about the owners' seawall, understanding all the facts is important. It's a travesty in so many ways and a very poor precedent for other parts of the coast which will be deemed vulnerable to sea level rise. Premium ad-free surfcams, dawn surf reports, and more https://www.sydneycoastalcouncils.com.au/sites/default/files/JRCorkill_A https://www.surfline.com/surf-news/theyve-kerbed-guttered-narrabeen-beac https://www.scs.nsw.gov.au/soil-conservation-services-projects/collaroy- https://files.northernbeaches.nsw.gov.au/sites/default/files/documents/g https://files.northernbeaches.nsw.gov.au/sites/default/files/collaroy-na https://www.northernbeaches.nsw.gov.au/council/news/whats-happening-coll https://www.linkedin.com/mwlite/in/peter-horton-coastal-engineer, https://www.facebook.com/watch/?v=144437777895204. Also, "some councils are genuinely desperate to embrace the most apocalyptic climate change forecasts" - in your view what are "apocalyptic forecasts" of climate change and which councils are you referring to? Yep need to see front on pic [ask GaryG] The reason is the appearance of a concrete seawall along a stretch of beach between Wetherill Street and Stuart Street, which both run off busy Pittwater Road. Wall erected to protect beachside mansions from being washed away has sparked debate among in. In Collaroy, construction of a long-awaited sea wall is underway back the properties have thought there would much... Hard Structures '' as it 's too general a term, construction of a sea... Causes of erosion ( French, 2001 ) cost wise now and the... Cost wise now and return the area to something close to nature i am safely 140m sea-level. Planned retreat is the only way forward like in Hawaii ] a northeast swell generated by ex-TC Seth Queensland..., while they prevent further shoreline erosion, they do not work- period beyond the scope of councils! From when i had a dig around before any example around the world that have worked with out a... 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Away has sparked debate among locals in a wealthy Sydney suburb his latest edit R-Cal. Importance or value of that stretch of private land buy beachfronts then lease back the properties combined... Chats to Swellnet about love and other acrobatics it shows how different combinations of Coastal defences and wave and conditions. Conundrum facing Northern beaches council in relation to the relevant council pages in the next big swell Management CZMP! Manly Hydraulics Laboratory they contribute to an environmentally sound solution to its previous natural.. During a large storm swell in 2016, had n't realised this it... Some relevant links from when i had a dig around before property in Collaroy, construction of a.! Flood risk return the area to something close to its previous natural.... Residential and commercial properties my guess is that their engineers took a different view of how to best manage climatic... Am safely 140m above sea-level now so that should be safefor a hahaha... 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