As a result, dried out sediments are carried by the wind towards the land. Though with 80 properties at risk, and coastal real estate prices at a premium, they gave up on that approach in 2007. The exception of course is if youre a donor to the LNP then a $3M block of land can be sold for $30M!!! 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. Death of Her Majesty Queen Elizabeth II. 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 looked into this again yesterday. Lindsay Fox is happy as a vegemite as he now has what he wanted all along, more real estate to land his helicopter on. A weather-beaten cement plaque with the year 1952 is still visible along a section of the seawall. Rock barrels at its best! https://www.9news.com.au/national/weather-nsw-sydney-collaroy-surfer-pul Sydney 'Living' Seawalls For a couple of furlongs it was quite close to the ocean but nobody cared. I looked at the Bruun rule - i think it was roughly 10cm sea level rise = 1metre of beach vanishes? 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. While celebrating his record for coastal protection with a park on the Collaroy-Narrabeen stretch, Northern Beaches council was also processing a Development Application thatd threaten the very same beach. Not off topic JS, wouldn't be surprised if there is a hyperlink to that video in the sea wall approval document!. Rise seems nearly double than the run. It certainly doesn't make it the best decision though. Lawsuit waiting to happen when a swimmer/surfer gets nailed by a rogue piece of concrete either down the 'Roy or up towards Northy. btw- that one is a tiddler compared to what they have here. 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. 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. These very costly bandaids never work and continue to fail while extending the problem to adjacent properties that don't have the wall. I do however feel there needs to be more separation regarding fact and opinion in your article. Those properties are the responsibility of the owners. Construction costs are 80% homeowner funded. Can't see sand staying around with all that crazy activity. These are the taxpayer funded grants that LGAs will apply for, to repair the wall. "We have the Tools and imagination" Wetsuits may never be the same again. Establishment and set out of site survey control points. IT WILL NOT FUCKN WORK YA FLOGS.. 5/6 NE SWELL NOW.. a proper ECL .. will destroy it .. this frustrates me .. We need to get all the data and expert opinions out in the open before decisions are made. Northern Beaches council has received a new application by five local property owners to build two new sections of the wall in front of their properties to protect the homes from coastal . They are frequently used in locations where further shore erosion will result in excessive damage, e.g. NewsDNARaw. I tear up and swear to myself. And thats being generous. How many parts of the great ocean rd could have to close and the emergency that would lead to. Florida is an example. Pipeline specialist injured while duckdiving in heavy waves. Lance Knight. It only does BOUSSINESQ wave interaction and NOT sediment transport but you can still get a lot of good design-feedback The thing is- in those pics, behind the walls, there's really not much to protect. Google "End-wall effect erosion" and you'll find many papers/studies on this. A number of properties along the oceanfront from Narrabeen to Collaroy were seriously endangered by erosion during a large storm swell in 2016. 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). They have destroyed every built form on the beaches. 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). Climate projections will have some Australian surfers rejoicing, and others not so. This can easily be achieved by creating offshore reefs that reduce the energy to a level the beach can cope with. The seawall is protected from the direct onslaught of waves by rows of granite boulders which are reinforced every year to stop erosion. There's only a loss to be made for the purchases. 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. buzzwords include "Improved recreational access. " I have a blanket policy of not feeling sorry for people owning properties worth multiple millions of dollars, who have lived the better part of their lives walking from their beachfront home directly onto the sand. I also presume the view of the houses will be enhanced by the no trespassing signs in large red writing. The project is part of the 1.3-km seawall proposed from South Narrabeen to Collaroy to protect both private and public assets in the suburb. "The community is not happy." Northern Beaches Council said there had been comprehensive community consultation about the council's coastal zone management plan for Collaroy Beach. At the same time it would put an end to the constant dredging and relocating of sand from Narrabeen and the second last line of your article states- Will try and find out. Hey there - well I live in Noosa, Sunshine Beach specifically. I am safely 140m above sea-level now so that should be safefor a while hahaha. I avoid it because I dont think anyone truly is except for a small % of big players who manipulate the market (or act like the house) and the rest just ride the peaks and troughs. Not to mention the many brutalist houses dotting its once beautiful headlands. I like the cut of your pedantic job, there Lilas. The angle of any hard hard structure relative to the wave direction is what really matters, so you can see why it's important to be very specific when talking about science/engineering. 3) How much has Council spent on legal fees defending Land & Environment Court appeals related to seawalls since the 2016 storm? Lake that has been going on for the last 20 years. I will try and find some pics of my area. It's actually quite simple to install and get going unlike a lot of open-source software. Might chat about it at some point Craig Brokensha, and anyone with deeper connections or insights, feel free to pass me their contacts and we can compare notes and research and discussion points. 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. Although ill be constantly monitoring the situation and around at cathedral the beach profile has certainly been getting steeper. The facts stand as such, an Engineer/s designed this monstrosity and no amount of excuses can change that. @Tango Records show the DA for the Collaroy Seawall had been lodged 18 months earlier in July 2018. This has cut into the base of the dunes below the surf club. Done well they could create added atmosphere to the beach life we love to live here for. Its like something out of a dystopian movie. 'This Pristine Beach Is One of Japans Last. If you look a bit to the north you can see the relatively intact beach with a decent amount of sand. 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 fucking vandals bulldozed down one of the last remnants of coastal heath to get their heavy equipment in. A quick trip Todos Santos way during a belting nor'west swell. On top of this they have places sand band grounds out perpendicular to the sandunes. Yes it is. I am actually shocked the collaroy houses in particular have gone up in value - i wouldnt be able to sleep at night living there! They are the real villains, as regardless of what anyone says or does, these idiots can allow or disallow engineering developments so the buck stops there! Surely going to get all crazy reverb and backwash stripping their sand more rapidly as well. I first noticed them when I went to Nijjima island in the early 90's and asked what were they reply was to protect the land from erosion.they actually had the moulds for the TP's there and just kept making them when needed.. Also I'm suspecting at the lga level the up front investment to do this work can be a hard sell. Looks perfect for high tide backwash to spread up and down the beach. Here's a screengrab from the website about the proposed breakwall extension: It seems that the main concern about the extension is the interruption of the natural flow of sand onto Mooloolaba beach and hence increased erosion risk. [ask GaryG] A concrete seawall designed to stop coastal erosion is being built from Collaroy to South Narrabeen on Sydney's northern beaches. High-quality Collaroy Beach Wall Art designed and sold by artists. 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. Lol. More than a year after severe storms damaged property in Collaroy, construction of a long-awaited sea wall is underway. 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. Its like stepping forty years back in time. increases social amenity". Is it designed to behave like a bottle-neck? Action: Casey Johnston to forward initial site visit details to Taskforce members, noting there will be a further site visit as the project progresses". Ratepayer/taxpayer bailout, so business as usual whatever happened to caveat emptor? If the council are desperate to get a liability off their books then they have totally screwed it. 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. I can see everybody getting angry here on SN..but what are the solutions to seal level rise , Short term and long term. Could be some good entertainment next time some serious swell hits. Dont lynch me its only an idea. Operates out of the same premises. gsco, I'd have thought that the first hurdle for any enhancement - besides the environmental impacts - would be the issue of access and whether the investment creates something with the most benefit for the most people. 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? >> Quite a worrying statement to begin with. In Japan, their solution is to just go bigger and higher . Wow Zen saw those photo's , it's really sad that they couldn't come up with something else , which raises the question.what other alternatives are there?? The total contribution of both the Council and the State is $3.46 million, which is 20 percent of the total cost of construction. This issue is not exclusive to the NB or sea level rise or storm surge. Wherever there's a seawall the sand/beach washes away and makes it virtually impossible to enter or exit the water, not to mention the impact on the birdlife, fish and crustaceans that depend on the seasonal sand flow that comes with a healthy beach. There's been significant coastal erosion (acute) along the GOR in recent years, though only a handful of places have experienced coastal recession (chronic). Here are the bloke credentials Here's the full video with audio. The seven metres protruding above sea level is vertical, even going beyond vertical for the final metre to prevent wave overtopping. Yes, blowie, I've yet to see anyone our age advocating for a soft solution. Zen interested how Japan just keeps dropping those big Tetrapods anywhere there is coastal erosionlost a lot of surf spots..how effective do you think they actually are against erosion? We have the tools and imagination to manage the climatic challenge that beginning to show in my lifetime. Plop! The Local Government Act allows the council to set a special rate to pay for that. Moreover, the current DA makes no mention of sand nourishment from sand sourced elsewhere, such as deeper water offshore. We have trouble performing numerical analysis on complex near shore environments, so what we'll do is create a slab sided wave tank with perfectly geometrical structures and wave forms and see what "actually happens". 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. 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. Wow, that is ugly even by brutalist/modernist standards. 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. The beach has remained under threat since that time, with additional erosion occurring during subsequent storms. Would be interesting to know the depth as it goes out to sea as well as that gives options for offshore reefs to dissipate the wave energy, therefor preventing erosion. Collaroy seawall project | Protection from coastal erosion Watch on Location: Collaroy NSW Our specialist staff were engaged by the Northern Beaches Council to construct the 250m rock revetment seawall in front of the Collaroy Beach carpark. With the benefit of ignorance, having not seen the actual plans, I'd be surprised if the foundations were able to fail easily as I'd expect they'd have been designed explicitly to avoid it. By creating offshore reefs that only interact with the largest [damaging] swell events, the normal beach processes can be maintained by allowing small to medium swells to pass unaffected and continue the normal flow of sand. 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