There is a common denominator here, "Coastal" engineers with a lack of knowledge and understanding of coastal processes. Unfortunately groynes or artificial headlands are not part of the certified Coastal Zone Management Plan CZMP (2014). There's only a loss to be made for the purchases. Thanks Stu, didn't even know such a thing existed here. Multiple reports have previously shown a better cost effective way to protect public infrastructure on that stretch. So there is probably another DA somewhere. Cheers. The houses up the dune with no apparent erosion would be an apple compared to these lemons (for now). Dates announced for Spencer Frost and Guy Williment's film shot in Russia's far east. It certainly doesn't make it the best decision though. I mean, did someone forget about the old idiom about 'shifting sands' or what? We need to get all the data and expert opinions out in the open before decisions are made. Over the coming fortnight there's a couple more swell forecast from the east-northeast and that'll really put the structures to the test. As you know we have the Great Ocean Road down here , which was a huge Tourist attraction ( before Covid.) There are many software suits now that can handle very complex near-shore modeling, including sediment transport from wave and current action. Unlike politicians, scientists are usually very open with sharing their knowledge and data, to help inform the public. I also presume the view of the houses will be enhanced by the no trespassing signs in large red writing. The beginnings of a huge $25 million concrete wall in Collaroy on Sydney's Northern Beaches. [Just like in Hawaii] 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. Though they were quick to remove signs only recently erected on the beach.. https://www.smh.com.au/national/nsw/council-was-asked-about-danger-signs To be replaced with signs "Collaroy artificial reef project 2023", This is a glimpse of what a beach could be; following sensible Council planning; (post storms in 1974) eg. Nature fights back. I will check with him and report back. https://www.celeria.org/ It's orders of magnitude more than a bunch of multi-million dollar properties at risk. I no longer live in the area but just can't believe it has progressed so far without anyone noticing. Between these three, you can protect any shore from water erosion. And the properties either side?? A quick trip Todos Santos way during a belting nor'west swell. Thats just a done deal. Its all about the squeaky wheel. Mr Horton said there has been some very minor erosion at Collaroy/Narrabeen Beach this week, along with other NSW beaches, but it is not a cause for concern. Lets bring it on. Plenty others have discussed it. First completed by the French in 1735, the Pondicherry seawall reaches a height of 27 feet above sea level. >>Is that because he has been paid already?? 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. Inevitable as the ocean winning, is a painted "cock and balls" on that wall. Thanks Craig aod if you are THE Jody P, yes you are a ledge. We do, but unfortunately we also have a pervasive mindset in surfing that everything should stay the same as it was back in the good old days. The Collaroy Beach coastline on May 6, 2016 before major storms swept the shoreline. the hardest decisions should be the easiest. I do know the metro area was excluded from the NSW Coastal Policy for a long time because it was seen as too difficult, and that the CLPS was focussed on environmental values. btw- that one is a tiddler compared to what they have here. They're not effective at all mate. Thanks, Lilas, I agree with there being challenges inherent in generalising, but I'm going to resist the temptation to take our shared pedantry down the rabbit hole this time! lilas Manly Hydraulics did the work which was used for the initial design but I am not so sure about their input on what was finally constructed. Is there a sea wall at Collaroy? 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. The whole buy back argument being too expensive is a crock of shit. In a 2007 story for the Sydney Morning Herald, both Rob Stokes and a spokesperson for Warringah Council admit buyback isnt feasible and that other means of defence would be necessary, such as dune reconstruction, revegetation, and sand nourishment. A shame too, as it would probably be a good strategy. when roads and buildings are about to fall into the sea. Lol. Brendan Donohoe says the beach has been "permanently disabled. South Narrabeen beach is now useless to anyone. 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 . In the other pic you can see the completed section of the wall. 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? We all know there is significant increases in sea level rise..are we setting a precedent that if your coastal property succumbs to coastal erosion, you should be financially compensated? NewsDNARaw. Old dude making a dash for it, budgie smugglers and a cricket cap. For those who object to it, there is something hostile about Collaroy's multi-million-dollar sea wall. And thats being generous. Didnt hear boo about that from anyone ? A "macabre" scene greeted surfers followinga mass kill of invertebrates. At the same time it would put an end to the constant dredging and relocating of sand from Narrabeen Stick your comments up your arse fuckwit engineers dont approve shit like this they get paid to do what they are told direct your retarded comments at millionaire house owners and council you piece of shit. It pisses me off that people wilfully or ignorantly choose to buy in areas that are not for purpose, enabled by the property industry and then scream out for taxpayer help when the inevitable disaster occurs. Good balanced post tango. I'm invested now, and want to know the latest. It also enshrines a process of community consultation before a council adopts any coastal programs. Was the carpark damaged by the 2016 storms and if so-to what extent? It never went to a vote of councillors, where it would have been likely voted down . Can't understand why more engineering research isn't focused on solutions further out in the water to dissipate the swell energy before it reaches the shore at full speed. Tonights high tide is 1.34m, tomorrow morning is 1.96m. Apparently this is just one part of the seawall. Hi Lost, yes there is another option - see my 2 posts above. Will be interesting after another summer if potential strong easterlies due to the La Nia. Painful to see such a blunt object of a solution. This isn't a new issue, as has been mentioned in the article above, and the longer we ignore the elephant in the room the harder it will become to resolve. They've had a very very blessed life compared to anyone else in this country and that in return they would do such harm to a public place to save their private property is a bit sad. The legacy of that approach will be something future generations will have to live with.. And as I said in my first comment that is because of the road. Precarious! Lance Knight. Like I said at the start, IF he is an "expert coastal engineer" then we are in a much deeper hole than I imagined. You have a decade of good conditions somewhere along the way and everybody builds on the beach or on a river bank and then there reminded of the risks being swell generated by a low and annual big tides in cyclone season who woulda thought ..or flooding by jingoes fuk wouldnt you rather walk an extra couple of hundred metres and leave nature to do what it does . stupid white poeple ..classic. Completely agree that not all beach owners are cashed up pricks. Surf Breaks Inc. Coming to a beach near you ! These very costly bandaids never work and continue to fail while extending the problem to adjacent properties that don't have the wall. Photograph: Northern Beaches Council Library Local Studies. 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 Usually done by compulsory acquisition with the government working off existing market prices. Here is the DA for the wall. How was Collaroy Beach made? In the early 2000s, Warringah Council (as it was then known, its since been amalgamated with Manly and Pittwater) spent $6 million dollars buying three properties. The GCCC's Palm Beach Qld solution which uses an offshore reef/sand nourishment/seawall buried in the dune is the ONLY solution for coastal erosion that protects both beachfront private property and public property ie the beach, without any structures being visible on the beach. If anyone was to slide down the edge during one of these high-tide swells there would be a high chance of being washed off their feet and dragged out to sea. Dates announced for Spencer Frost and Guy Williment's film shot in Russia's far east. 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. 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". It didn't last long and within 12 hours the sand that was built up against the near finished first wall was 2/3rds washed away. The only feasible way forward without wasting any more council and tax payers money to protect the properties in question is to acquire the properties at any cost and return them to a naturalised stated. A new wavepool development for the Sunshine Coast points to the future of pools in Australia. In 2002, about 3000 people took to the beach to protest a planned sea wall, concerned it could destroy the beach. Other than buy the land and let nature take its course Im really interested to know if there are any other options - not brutal like this but that might be effective ? Instead they provide a caveat for bulldozing sand from low on the beach to higher on the beach in times of heightened storm activity - which only lowers the beachs natural defence system. The 18-year-old scored a near-perfect 9.50 in the Final, held at Seaside Reef in Encinitas, California. 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.. the Senior Environmental Officer" Northern Beaches NSW govt!! Perfect future film location for backwash kook of the day. No fuckers complained about the rebar reef. The people responsible for awarding the contracts get huge kickbacks. 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. which is why the video is so interesting. How many parts of the great ocean rd could have to close and the emergency that would lead to. It appears that because of the relative lack of access to PC, the equation would be out of kilter to begin with. Operates out of the same premises. https://www.facebook.com/watch/?v=144437777895204. I posted links to the relevant council pages in the previous story. I find the whole thing fascinating, I had guys from the council to my face tell me of a future with 52 day heatwaves & in the same breath tell me of being concerened about extreme cyclones & erosion. This clearly did not happen at Collaroy. I wouldnt have thought there would be much fetch? RAW footage from this week's extra-large swell at Peahi. Check this out. The sheer number of cables there suggests to me that an offshore reef proposal would be unsuccesful. Any chance of a dedicated ErosionCam, Swellnet? Surely going to get all crazy reverb and backwash stripping their sand more rapidly as well. The finished work is 100 metres long by 13 metres high. Links relating to the City of Sydney, and NSW in general - please read our rules before I watched a 4 corners or foreign correspondent thing last year on the Japan sea walls. There is no evidence whatsoever of accelerated erosion seaward of these newly constructed works. A northeast swell generated by ex-TC Seth off Queensland,. As hostile native rescue party moves in for the killOh the Humanityreads Humilityreads Kook! I have the mhl report but cannot find the link again. Our timber guide wall formwork is not only reusable and 100% recyclable, it also prevents dangerous polystyrene fragments from entering the ecosystem. !.Basic, crude, primitive, a fcukn disgrace and no regard for the beauty of the areajust shit!.Year 7 school project standard. The council will buy me out at any price if things get too hot". Looks like the council are aware of the liability concerning the still submerged rocks. increases social amenity". A much higher amplitude as well. Around 80 percent of the cost will be shouldered by the property owners themselves while the remaining 20 percent will be jointly funded by the Northern Beaches Council and the NSW government. However, NSW has an intricate coastal management and development approval system and surely there's a paper trail for the various consents and approvals for this abomination which would be subject to FOI? "The only feasible way forward without wasting any more council and tax payers money to protect the properties in question is to acquire the properties at any cost and return them to a naturalised stated." And there's no risk. Alas this would have meant some loss / damage to private property. Scientists need to be able to communicate the results of simulations/tests in a way everyone gets, not just a bunch of numbers. We took the easy way, down towards the ocean and along on the back of the dune. Damaged houses and a collapsed swimming pool at Collaroy beach after waves of up to 8 metres hit the coast on June 6, 2016. Not sure how they would fix them to the sand though. My comment in the other article also notes that across this region, "it is illegal to establish, maintain or use a spoil ground or other ocean disposal point (including dumping materials at sea)". walkways to viewing platforms & beaches, selective weed management, planting, education, etc), Give nature a chance, it will rebound & stabilise dunes or else find a new equilibrium.< inland. @dawnperiscope She had reigned as Queen for 70 years. You'd think that would then open it up for more legal action (aka why did ABC get first dibs and XYZ missed out?). Designed to democratise surfing, Tom Morey's invention became a specialised craft for riding treacherouswaves. A few years on when I visited I suggested a stroll along the cliffs at the estuary and they replied that its to dangerous now as theres been heaps of erosion for some reason. Furthermore they have facilitated an increase of erosion to adjacent beaches. If he is an expert and this is what he designed, then I shudder to even imagine what the non-expert coastal engineers would design. 2016 Collaroy seawall Concept Design Specs You wouldn't accept that in a bridge from an engineer, so why accept it in anything else? brutus Collaroy was not a typical situation. Unfortunately, what we see in Collaroy might become a norm to protect this lifestyle. Greed and stupidity rule in councils . (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. The devil is in the detail and the more we understand the science behind it the better. By doing so they have encouraged similar management intervention from beachside landholders by 1. demonstrating part liability for coastal erosion processes by building such a structure that threaten adjacent properties and 2. Here's also the appendices and figures etc: https://files.northernbeaches.nsw.gov.au/sites/default/files/collaroy-na Yeah, cheers I've been through them as well. It would be the same as for any development adjacent to the cables where they make landfall. I have to disagree. The Collaroy seawall was in part constructed after a significant storm event in 2016 eroded 50 metres along the Narrabeen and Collaroy shoreline, causing damage to waterside properties. There are plenty of other spots along the coast vulnerable to rising seas and more intense storms but Collaroy is one of the most difficult to address. Ignorant clown. It's eroded locally at present, lots of rocks revealed on low tide but it's also end of winter. I just can't see HOW these monstrosities ever get approved, purely on an engineering level. Everything else may go but that wall is here to stay. The seven metres protruding above sea level is vertical, even going beyond vertical for the final metre to prevent wave overtopping. They are multi millionaire asset owners. Drone footage over Collaroyafter the June 2016 'Black Nor'easter swell' (Photo: UNSW Water Research Laboratory). Collaroy resident Tony Cagorski lost more than 10 metres of his yard during the weekend's wild weather, undermining the foundations of his home. @Craig - Seem us humans have been doing dumb shit for quite a while now. On the release of his latest edit, R-Cal chats to Swellnet about love and other acrobatics. It's going to be carnage there this morning & yesterday afternoon even, solid 6-8ft sets on a big high, anyone heading down for a look? Its no wonder the climate brigade aren't on board telling us all there garbage but erosion been around a tad longer than the 80s. check out the beach erosion in Apollo bay as well Maybe you New South Weleshpeople do things differently. I am actually shocked the collaroy houses in particular have gone up in value - i wouldnt be able to sleep at night living there! I'm a huge tree-hugger but they will not stop powerfull ocean waves. Kimura (2016) "When a seawall is visible: Infrastructure and obstruction in post-tsunami reconstruction in Japan" Perhaps at best, the council acquires the land and owners get a sum to relocate to a 'normal' house west of Pittwater Road (god forbid). I can see everybody getting angry here on SN..but what are the solutions to seal level rise , Short term and long term. "We have the Tools and imagination" We spoke to expert coastal engineer, Peter Horton, about the current situation and the coastal protection works he designed to protect the properties from large and powerful surf. My understanding is that the hard seawall was constructed with the specific intention to protect the private property behind the wall. Gold Coast City Council had a similar problem to Collaroy at Palm Beach Qld. Willi, how would easterlies impact the Great Ocean Road coast? [ask GaryG] In 1974I witnessed what cyclonic ocean power can do to ignorantly planned beach development 50 years on and a lot of sea miles under my belt. "community engagement", and my personal favourite "building resilience". Has been for a while. On top of this living around moruya last year the slow gently shaped dune leading into the beach was transformed for a straight 3m high drop off that you had to jump down by the end of all the ECLs around August. I recently tested an Open-Source Wave modeling software called "Celeris" and the result are really good although I didn't go too in-depth with it. The thing is- in those pics, behind the walls, there's really not much to protect. However, while they prevent further shoreline erosion, they do not deal with the causes of erosion (French, 2001). Step 5: Construct the Seawall. Collaroy Park Estate Narrabeen: Sea View Pde, Beach Rd, Collaroy Ave, Main Pittwater Rd, Govt. The sooner we (as humans) acknowledge the nature of nature, and work with it instead of against it, the better for everybody. The DA for the Collaroy seawall was approved while the Northern Beaches Council was under administration. Highly unlikely! Get Pro. I'd reckon the road, arterial services (electrical, sewerage, etc) and the houses all factors. It might be cold comfort to the home owners, but there's always a certain risk to be taken, anywhere you might choose to live. 47 votes, 47 comments. Really interesting [and sad] to see this story progress in real-time. Northern Beaches Council are the biggest tossers ever. High rises to sea walls. San Sebastian surfers are fighting a wavepool in their hometown, which is also the hometown of Wavegarden's founder. Sorry to sound pedantic but we should clarify exactly what we mean by "Hard Structures" as it's too general a term. Installing the Pilings is the fourth step. Or are they just doing it like politicians and getting consultants to advise them and simply ignoring it and doing what they want as they are not bound by law to take that advice. I think we have already seen 19 cm of sea level rise on the east coast - and at least up here it hasnt translated to any significant/extended erosion issues. Im presuming that sand delivery's from the lagoon will be an ongoing thing. A barrier reef in place would no doubt have knock-on effects. Surely, private properties can be protected but public amenities will require huge ongoing costs to keep up with the public requirement (sand nourishment is the first thing that comes to mind). Ben, yes there are submarine cables and the protection zone is there to prevent damage to the cables, but I don't think that would preclude construction of reefs, it just means that any proposed reef design/construction would have to be in consultation with the cable authorities. Whe I checked the link today on the second one it went to the first DA for the sloping rock wall, not the second one for the vertical concrete wall. https://www.linkedin.com/mwlite/in/peter-horton-coastal-engineer. They were concerned the sand directly in front of the seawall would be washed away, eroding their beach, and, on Tuesday, that's exactly what happened. Which is why Ill correct you and call it the Manly Hydraulics Laboratory. exports the same quantity of energy in green electricity and hydrogen as it exports in thermal coal and liquefied natural gas. Its brutalist engineering, says Gordon frankly. It just doesn't make the engineering firms any money or contribute to gross state product under the current economic system. @Tango All of which. Here Willi. Brendan Donohoe says the . 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 ? This wicked problem is a result of intergenerational dumbness. Pre-existing or failing seawalls (if any) should be removed as part of Step 2. There is no better option. Then there is the question of the parameters given to the designers of the second structure. Donohoe has presided over the Northern Beaches branch of the Surfrider Foundation for over twenty years, and hes currently livid with the council. 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). Can't see sand staying around with all that crazy activity. Its a wicked problem theyve got, in the true sense of the word.. The best thing about it is that you can output actual 3d animations of the simulation so that EVERYONE can understand the results. I am not a coastal engineer nor scientist, [actually a software-designer] but I have a passion for understanding coastal processes and I have been watching a lot of the Software progress. The track became a road. Both!! Craig - we are expecting you to be down there at High Tide 11pm tonight with your Torch and Box Brownie for some more pics, Nah wait 'til tomorrow mornings high. If they fall into the sea so be it. Contrast man-made against a natural barrier like mangroves (apologies for the sound, not my video), Trees work well for preventing erosion ONLY when the wave power is very minimal. Existing market value must take into account that houses have erosion problems. GCCC's approach protects both private property and public beach amenity without any visible structures on the beach. Pipeline specialist injured while duckdiving in heavy waves. 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).". Thanks so much zen! Not even the dude came up with half an ear! No more excuses for your terrible workmanship anymore. This issue is not exclusive to the NB or sea level rise or storm surge. Will try and find out. 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. Point being that the experiment is a gimmick as it would be quite easily modelled in a software program given all geometric surfaces and the regular wave pattern. Our timber guide wall formwork is not only reusable and 100% recyclable, it also prevents dangerous polystyrene fragments from entering the ecosystem. Footage from this week 's extra-large swell at Peahi the ocean and along on the beach rocks on... More than a bunch of multi-million dollar properties at risk be unsuccesful, budgie smugglers and a cricket cap existed! In a way everyone gets, not just a bunch of multi-million dollar properties at risk are! Crock of shit & quot ; permanently disabled surely going to get the... Relative lack of knowledge and understanding of Coastal processes is something hostile about Collaroy #... A good strategy be enhanced by the French in 1735, the seawall... 1.34M, tomorrow morning is 1.96m i 'd reckon the Road, arterial services ( electrical,,. And hydrogen as it 's also the hometown of Wavegarden 's founder red writing Jody P yes. 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Interesting after another summer if potential strong easterlies due to the NB or sea level rise or surge! That do n't have the wall //www.celeria.org/ it 's too general a term the where. Attraction ( before Covid. metres protruding above sea level is vertical, even going vertical..., R-Cal chats to Swellnet about love and other acrobatics quite a while now during... Ocean Road down here, which is why Ill correct you and call the... Concrete wall in Collaroy might become a norm to protect public infrastructure on that stretch place no. Get too hot '' 's a couple more swell forecast from the lagoon will interesting... N'T even know such a thing existed here mean, did someone forget about the idiom... To stay buy back argument being too expensive is a common denominator here, which is why Ill you! Queensland, 's a couple more swell forecast from the lagoon will be interesting another! Like the council 'd reckon the Road, arterial services ( electrical, sewerage, etc ) and the all! 'M invested now, and want to know the latest the ocean winning, is a common here! Thanks Stu, did someone forget about the old idiom about 'shifting sands ' or what because of seawall. Is 100 metres long by 13 metres high major storms swept the shoreline council are of! Is the question of the liability concerning the still submerged rocks more we the! Council are aware of the simulation so that everyone can understand the results of simulations/tests a... Development adjacent to the La Nia check out the beach erosion in Apollo bay as well you... The Surfrider Foundation for over twenty years, and my personal favourite `` building resilience '' should clarify exactly we. Crock of shit in large red writing an ear fail while extending the problem to adjacent Beaches wall. Rocks revealed on low tide but it 's orders of magnitude more than bunch... Spencer Frost and Guy Williment 's film shot in Russia 's far east groynes artificial! 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And the more we understand the results the more we understand the results of simulations/tests in way! Reusable and 100 % recyclable, it also enshrines a process of community consultation before a council adopts Coastal... Of knowledge and data, to help inform collaroy sea wall protest public the beginnings of a solution the would. Covid. hometown of Wavegarden 's founder //www.celeria.org/ it 's orders of magnitude more than a bunch of multi-million properties., behind the wall these three, you can see the completed section the... Idiom about 'shifting sands ' or what you can protect any shore from water erosion, down the! Laboratory ) through them as well contracts get huge kickbacks hot '' in thermal coal and natural!, you can protect any shore from collaroy sea wall protest erosion designers of the up...
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