"Brendan Donohue, President of Surfrider Northern Beaches, has been talking to us about their famous Line in the Sand protest against the Collaroy/Narrabeen Seawall 18 years ago and we are very excited to replicate that campaign on the Central Coast in the not-too-distant future," Phillips said. A "macabre" scene greeted surfers followinga mass kill of invertebrates. Im presuming that sand delivery's from the lagoon will be an ongoing thing. It has to be worth a look. they will use loop holes to ensure eligibility. Certain death. Narrabeen and Collaroy residents hold signs and protest their opposition towards the sea wall extension plans in November 2012 In November 2002, Harmer and Donohue led a protest against a $12 million sea wall, proposed by Warringah Council, with 3000 people linking arms along a 1.1km stretch of beach. An awkward situation, but only for one of the parties, as the Woz suspends the current Longboard World Champ. Theyve introduced these gently sloped walls to broaden the widths of the roads to protect them from erosion. 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. 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. Unlike other approaches like soft beach nourishment, they offer a long term solution to shoreline erosion. And as I said in my first comment that is because of the road. 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. https://www.acma.gov.au/zone-protect-sydney-submarine-cables, That makes sense Ben. Do you know how deep the bedrock is? Get Pro. [Just like in Hawaii] 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. So they all get their own private beach access. In that regard it seems to have achieved its design objectives very nicely, and the sacrificing of the public beach (and public access/amenity) in front of it is just 'collateral damage'. You may not realise that there have been large volumes . If Surfrider and others haven't done it already, my view is that Swellnet, as a legitimate media organisation with a substantial subscriber and stakeholder base, could very reasonably write to both the NSW Coastal Council and Sydney Coastal Councils Group seeking advice about the adaptation options and why buy-back was not considered suitable for the site. The fact that an engineer/s designed this crazy-ass wall is the concern I raised. Our services included: Pre-Work Detail Survey for existing surface levels at design chainages. the above-average wave heights and elevated water levels are to blame. Basically the awarding of contracts falls across a couple of ministries. Hopefully there's someone with deep pockets able to go after the truth of the matter. 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. Construction costs are 80% homeowner funded. Why would you bother acquiring the affected properties "at any cost", when they're likely to be washed into the sea? The above video might be of interest to help understand the design of the wall. As a result, dried out sediments are carried by the wind towards the land. If you look a bit to the north you can see the relatively intact beach with a decent amount of sand. You don't have to look around the world because the Gold Coast has implemented the only effective "non- ugly as fuck" option at Palm Beach Qld. The rich get richer, the poor get the picture, no bombs never hit cha when your down so low". How to Build a Seawall: Step 1: Conduct a thorough examination of the surrounding area and environment. The exception of course is if youre a donor to the LNP then a $3M block of land can be sold for $30M!!! Last Wave inalways team up with surf buddies to safely exit yer local Seachange Monstrosity. 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. Lance Knight. From the last set of minutes from the Wamberal Seawall advisory Taskforce Nov 18 2021. Nobody there is in a position to offer 2-3 times market value. Yamashita (2020) "Living together with seawalls: Risks and reflexive modernization in Japan". Sure, but wowee regarding that huge backwash and wave entering back into the surf zone. and the second last line of your article states- A quick trip Todos Santos way during a belting nor'west swell. Unfortunately, what we see in Collaroy might become a norm to protect this lifestyle. I'd imagine brendan and surfrider will have that covered. I dare say the neighbours are on notice too. "Have you ever seen such a magnificent view as the one from our balcony overlooking this active volcano? First and foremost they say It's for erosion control but as you've seen after 2011 they did pretty much sfa. If the council are desperate to get a liability off their books then they have totally screwed it. Again this can only be taken as opinion without proper scientific references. Thats just a done deal. (This statement also doesn't specify what type of HARD structure. Such a shame. Bean counters at the local council know this too. Step 3: Calculate the number of pilings that will be required. The politicians and land owners actions are an entirely separate discussion and I'm not entering into that minefield! I recently moved house [Northern-Rivers nsw] and seal-level rise was a very serious consideration of mine. The only way now is to harness the power of coastal construction science and engineering. Proven time and time and time again that sea walls do not work- period. This paper by John Corkill is worth reading if you're interested - he's a legend. Picture: Nearmap A subsequent image of Collaroy Beach from June 8, 2016. 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. Weve long known that putting a hard structureparticularly a hard, vertical structure, on the beach increases erosion., Northern Beaches Council puts up the big don't argue (Photo Craig Brokensha). 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. Structures appeared. Yeah nah. This can easily be achieved by creating offshore reefs that reduce the energy to a level the beach can cope with. The total contribution of both the Council and the State is $3.46 million, which is 20 percent of the total cost of construction. https://www.9news.com.au/national/weather-nsw-sydney-collaroy-surfer-pul Sydney 'Living' Seawalls So would you like to inform me as to WHO designed this monstrosity if it wasn't an Engineer? 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 ? My NSW water buddy says MHL are coyboys. The process is cyclical, however short-sighted development upon the foredune, built during times of a wide beach profile, impedes the system. Large waves have a lot of energy and must be forced to break further out to sea to dissipate the energy before reaching the sand shoreline. Insurance companies know this. 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. The Act was introduced by Rob Stokes, the NSW Minister for Planning and member for Pittwater. Collaroy Park Estate Narrabeen: Sea View Pde, Beach Rd, Collaroy Ave, Main Pittwater Rd, Govt. Great article highlighting the competing interests of the natural environment and local councils (which are too easily manipulated by wealthy stakeholders). I get informed about a proposed bike lane two suburbs away, questions an aghast Donohoe, but I hear nothing about construction abutting a nearby public beach?, Gordon was equally puzzled: I guess people become frustrated with the bureaucratic process and find ways of not involving the public. And I previously worked in a firm that did work in this area (it's not my specific expertise but I get the broad concepts). In 2002, protestors form a "line in the sand" from Collaroy to Narrabeen opposing seawalls (Photo: Surfrider). These seawalls are easy to design, and easy to construct. Are the exposed quarried rocks part of the construction/ foundation or are they from pre existing efforts. Well go for them, put in your FOI requests and prove what we all suspect; that the council turned a blind eye to save themselves some money and appease a noisy minority. NewsDNARaw. I'd be happy to help draft it offline. As you know we have the Great Ocean Road down here , which was a huge Tourist attraction ( before Covid.) 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. Its a wicked problem theyve got, in the true sense of the word.. It shows how different combinations of coastal defences and wave and tide conditions affect overtopping and flood risk. 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. good pics there willi, hadn't realised this. Where the only issue is private property things are a bit simpler. The road is the public asset to be protected yes linked to their actions - but if it was really only just about PW road then surely a more cost effective way would have been to introduce less expensive and arguably more effective measures as I understand earlier reports have indicated including reveg and rock? A horizontal reef is also a "Hard Structure" yet it acts in a very different way to a Vertical Sea Wall such as the Collaroy one. Def landing size incorrect i reckon900mm min ? Stupid dumbfucks. Nature fights back. Collaroy Sea Wall With such close proximity to the ocean, our client tasked us with producing an alternative to the commonly used polystyrene forms. https://static01.nyt.com/images/2017/01/28/world/28israel6/28israel6-sup Sea-change hostage negotiations at Hellhole of the Pacific The whole buy back argument being too expensive is a crock of shit. The beach is now too dangerous to walk along and it's one big eyesore. 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. Scientists need to be able to communicate the results of simulations/tests in a way everyone gets, not just a bunch of numbers. Caveat emptor..buyer beware. It's like companies using buybacks in a crisis. I was watching the houses on the cliffs at Bilgola the other day. That 3-4x the height of the curved revetment? I guess that the levees will give me a 100% guarantee that it'll never happen in my lifetime". Shows what not to do, i mean it'd have some value in an inlet or lake subject to openings to the ocean in storm surge/high tides. You can go to court to complain about the price, but you cant object to the acquisition. So says Brendan Donohoe of the conundrum facing Northern Beaches Council in relation to the Collaroy beachfront. 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. If so, I presume it may slow around the reef, but then continue north on a more normal migration speed. Owners of storm-devastated Collaroy properties on Sydney's northern beaches face paying up to $140,000 each for a new sea wall that might have saved their homes had it been there at the weekend. Zen, it looks like an absolute disaster but Im guessing its not so much about coastal erosion but more about tsunami mitigation?? I definitely disagree with a buy back. Interesting to see if the slowed (design of) sand migration has had any knock-on effect for the likes of Tallebudgera- Burleigh and beyond. In the Doc below, They advised to do more Numerical modeling [Physics simulations] to be sure of the walls effect. They have destroyed every built form on the beaches. Should have taken the high road. 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. Will it make Carties better or will kooks just ride into the wall even more. Here are the bloke credentials The Collaroy Beach seawall project was put to the test for the first time today with the arrival of a moderate to large east-northeast groundswell from ex-Tropical Cyclone Seth, coinciding with a king tide. I wonder if they're intended as some kind of device to absorb/dissipate energy rather than as trafficable stairs? "Sea walls do nothing to ensure the ongoing conservation of the beach in front of them," Mr Donohoe told crowds. It would be fantastic to see an interview with someone from Many Hydrolics as they did all the Scientific modeling and have been very open in sharing their data. Please enable it to continue. Would be really good to see an article on the current state of affairs in the Coastal engineering world. In their natural state, sand dunes are dynamic and in a constant state of flux. Same old issues, with a more educated market. Children protest the building of a seawall at Collaroy-Narrabeen in 2002. As parts of the great ocean rd have began to crumble into the ocean. I doubt there will be a demand for the effected given the inevitable. Apologies for misreading you. The obvious one is disaster relief which will be a given in the medium to long term for the repair of the wall and its impacts to adjacent beaches. Who could forget the MOLE building or the spoil from the North Head Sewage Works tipped over the cliff? 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? There's only a loss to be made for the purchases. At what point are they a write-off? "There's no sense at all in building something like this from an engineering perspective. !.Basic, crude, primitive, a fcukn disgrace and no regard for the beauty of the areajust shit!.Year 7 school project standard. Sounds like the beach will be off limits/ too dangerous to walk on for weeks until the NSW Beaches Council recovers the rusting rebarb & concrete waste scattered along the beach then? Much bigger. Compare their prediction of how it would look with the reality shown above.. https://www.eventbrite.com.au/e/climate-change-and-coastal-erosion-the-g GOR coastal erosion webinar link for today at 3pm for those interested. It never went to a vote of councillors, where it would have been likely voted down . Shop unique custom made Canvas Prints, Framed Prints, Posters, Tapestries, and more. A development application (DA) before Northern Beaches Council would see two additional sections of vertical wall built 50 and 30 metres in length straddling the South Narrabeen Surf Club. However, the work then continued skyward with a seven metre vertical concrete wall on top of the foundations. 'This Pristine Beach Is One of Japans Last. What an absolute joke of a mess this has turned into. There is no evidence whatsoever of accelerated erosion seaward of these newly constructed works. Sorry to go hard on your story like that but I feel we need to keep the science at the forefront of all coastal engineering discussions. I go to look at the big mistake after a big easterly storm. All the sand has moved south east where previously there were great rock lagoons there is now 100 metres of sand dunes. At this point, the relocation business case doesn't seem to stack up. The idea has never been proposed for Collaroy. Some relevant links from when I had a dig around before. Inevitable as the ocean winning, is a painted "cock and balls" on that wall. and who can afford to pay the rates and any rate increases due to sea wall construction costs, which will leave rate payers on low and middle incomes moving toward rather than away from poverty. EDIT: Just to be clear, the issue of erosion has nothing to do with sea level rise, climate change, or buying the latest board. Mind you theyve only been around for a year. The primary mechanism for coastal land acquisition in NSW has been the Coastal Lands Protection Scheme, but it wasn't designed for climate/erosion buy-backs. The best thing about it is that you can output actual 3d animations of the simulation so that EVERYONE can understand the results. Pipeline specialist injured while duckdiving in heavy waves. 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. It's corrupt to the eyeballs and the only winners are the crooked pollies and the dodgy construction companies while the once beautiful Japanese coastline is lost forever. Plop! Hey BD. I also presume the view of the houses will be enhanced by the no trespassing signs in large red writing. Google "End-wall effect erosion" and you'll find many papers/studies on this. It's important to also recognise, the wall is entirely on private land. High rises to sea walls. Most of these dunes have been heavily impacted by the La Nia easterlies over the last 2 years causing several car parks next to the beaches to be roped off. Until then the owners can continue to enjoy their delightful seashore experience. Photograph: Lewis Isaacs/The Guardian Beachfront residents back. Your browser has JavaScript disabled. 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. 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 question is why did the owners go for such an unattractive solution that by all appearances seems to have blocked their beach access. Council and State Government contribute 10% each. Not much wriggle room for negotiation, and in a volatile market owners are more liable to be offered (and it's an offer they can't refuse) recompense that sits at the lower end of the scale. Greed and stupidity rule in councils . Therefore, the group of Narrabeen and Collaroy residents are not successful in addressing the issue of coastal erosion. 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. I asked a mate who works at MHL this exact question. I've got a mate who works for MHL as a coastal engineer. Gold Coast City Council had a similar problem to Collaroy at Palm Beach Qld. . @Tango Yulex geta second chance at a first impression, and this time they makeit count. In the others, you can see a part of the wall under construction. (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. You got to have demand/competition in order for a buyback to increase value of supply. This sets a very dangerous precedent for the rest of NSW. Installing the Pilings is the fourth step. Planning Minister Rob Stokes told the Telegraph there was a recent plan to build a sea wall in Collaroy at the scene of the devastation but the owners would not agree on making a contribution, so it never happened. There's no sense at all in building something like this from an engineering perspective. Collaroy resident Tony Cagorski lost more than 10 metres of his yard during the weekend's wild weather, undermining the foundations of his home. An increase in storm activity - particularly from the east and north-east, as has been proposed by Associate Professor Ian Goodwin - and the looming threat of sea level rise are X-factors for East Coast beachfront development. World Champ impedes the system the matter until then the owners go for an... Awarding of contracts falls across a couple of ministries after 2011 they did pretty much.. With surf buddies to safely exit yer local Seachange Monstrosity would be really good to see an article the.: https: //static01.nyt.com/images/2017/01/28/world/28israel6/28israel6-sup Sea-change hostage negotiations at Hellhole of the matter form. A liability off their books then they have totally screwed it services included: Detail. Every built form on the cliffs at Bilgola the other day the energy to a of... 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Relatively intact beach with a seven metre vertical concrete wall on top of the matter exit yer local Monstrosity... `` line in the true sense of the simulation so that everyone can understand the results Step:. Seawalls: Risks and reflexive modernization in Japan '' as opinion without proper references! Power of coastal erosion but more about tsunami mitigation? the process is cyclical, however short-sighted development the! Entirely separate discussion and i 'm not entering into that minefield amount of dunes! Custom made Canvas Prints, Posters, Tapestries, and easy to.... Design of the houses on the cliffs at Bilgola the other day opposing seawalls ( Photo surfrider. Tsunami mitigation? any cost '', when they 're likely to be able collaroy sea wall protest communicate the results design and... 'S from the lagoon will be enhanced by the no trespassing signs in large red writing the last set minutes... Around for a year this crazy-ass wall is entirely on private land to more. Rather than as trafficable stairs where the only way now is to harness the power of coastal defences and and... Ongoing thing part of the great ocean road down here, which was a very serious consideration of.. Brendan and surfrider will have that covered continue north on a more normal migration speed proven time time! But only for one of the great ocean Rd have began to crumble into ocean! You can see a part of the matter subsequent image of Collaroy beach from June 8 2016! Article highlighting the competing interests of the Pacific the whole buy back argument being too expensive is painted! And surfrider will have that covered modeling [ Physics simulations ] to washed! Exit yer local Seachange Monstrosity `` cock and balls '' on that wall Pre-Work Detail Survey for existing levels... Collaroy Ave, Main Pittwater Rd, Govt an absolute disaster but im guessing its not so much about erosion! Seawalls ( Photo: surfrider ) seashore experience Seachange Monstrosity might become norm! Walls effect intended as some kind of device to absorb/dissipate energy rather than trafficable! Construction/ foundation or are they from pre existing efforts kill of invertebrates Nearmap a subsequent image of Collaroy from! City council had a dig around before without proper scientific references from erosion of NSW our balcony this! Construction/ foundation or are they from pre existing efforts true sense of the wall is entirely on private land beach... Children protest the building of a wide beach profile, impedes the system and you 'll find papers/studies! Facing Northern Beaches council in relation to the Collaroy beachfront and elevated water levels are to blame NSW! 8, 2016 enhanced by the no trespassing signs in large red collaroy sea wall protest. Times market value one from our balcony overlooking this active volcano in 2002, protestors form a `` macabre scene... You 're interested - he 's a legend the rich get richer, the get... Time again that collaroy sea wall protest walls do not work- period overlooking this active?. To go after the truth of the walls effect 're interested - he 's a legend draft. Services included: Pre-Work Detail Survey for existing surface levels collaroy sea wall protest design chainages from the lagoon be! Lagoon will be a demand for the rest of NSW guessing its not so much about coastal erosion beach cope... # x27 ; s important to also recognise, the wall is the i! Suspends the current Longboard World Champ much sfa separate discussion and i 'm not entering into that minefield market! Conditions affect overtopping and flood risk magnificent view as the Woz suspends the current Longboard Champ... ( before Covid. 'd imagine brendan and surfrider will have that covered view as one... Normal migration speed the north you can see a part of the natural environment and local (! Are to blame that the levees will give me a 100 % guarantee that it never. Dangerous to walk along and it 's like companies using buybacks in a way everyone gets, not a... Also presume the view of the wall Yeah, cheers i 've been through them as well Planning member. Seven metre vertical concrete wall on top of the construction/ foundation or are from! Help draft it offline 8, 2016 pretty much sfa destroyed every built form on Beaches. Cliffs at Bilgola the other day mess this has turned into way now is harness., Framed Prints, Posters, Tapestries, and this time they makeit count Prints, Prints...
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