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). The lessons, it would seem, are still being learnt. I think the wall is actually a good warning of exactly what governments mean by "adaptation and mitigation"..expensive projects for the construction industry rather than sound ecological management. Those first couple of staircases looked fucked. The root cause is building on the foredune. When deciding to spend rate payer dollars, on what metric do they use without using the big IF ? They have just invested in an asset that requires 60 years of maintenance. I guess that the levees will give me a 100% guarantee that it'll never happen in my lifetime". Last Wave inalways team up with surf buddies to safely exit yer local Seachange Monstrosity. Plop! Fvck the coastline. 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. It makes perfect sense doesn't it, stop/dissipate the energy before it has the chance to have an impact. Caveat emptor..buyer beware. The legacy of that approach will be something future generations will have to live with.. I wonder if they're intended as some kind of device to absorb/dissipate energy rather than as trafficable stairs? increases social amenity". Will it make Carties better or will kooks just ride into the wall even more. This is where I live. Took the words out of my mouth. Thats just a done deal. No-one wants to see visible structures built along the beachfront. 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. Well, it (and a lot of us) could possibly be in for a real test within 3-5 years with the Thwaites Glacier (Doomsday Glacier) suggested to be at risk of sliding into the sea and potentially raising sea levels by 65cm. It's like companies using buybacks in a crisis. It might take a bit of digging to prove it, but the evidence is accumulating already. Northern Beaches councils have been sacked for dodgy dealing twice before. How to Build a Seawall: Step 1: Conduct a thorough examination of the surrounding area and environment. It would be interesting to know if coastal engineers are bound by law to follow best-advice from Consulting Scientists? 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. 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. I mean, did someone forget about the old idiom about 'shifting sands' or what? We have over 40 years of combined experience installing, maintaining, and repairing seawalls on both residential and commercial properties. Like I said at the start, IF he is an "expert coastal engineer" then we are in a much deeper hole than I imagined. I've written about it before but the real reason here is money- it is massive pork-barreling on an unprecedented scale. High-quality Collaroy Wall Art designed and sold by artists. "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. Old dude making a dash for it, budgie smugglers and a cricket cap. Some family recently went through this as their house sat above the construction zone for the Spit / Northern Beaches Link tunnel. Great stuff. Look at offshore reefs around all the pacific islands. Installing the Pilings is the fourth step. 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 . A northeast swell generated by ex-TC Seth off Queensland,. (btw if you're the Jody P I'm thinking of, you're an absolute legend mate!). The total contribution of both the Council and the State is $3.46 million, which is 20 percent of the total cost of construction. 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. Amongst other things, it is illegal to "establish, maintain or use a spoil ground or other ocean disposal point (including dumping materials at sea)". Imagine how fun that'd be with your mates on a boog. The Northern Beaches took a massive hit by big surf and a king tide . (AO) 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. Seawalls have the inevitable effect of reflecting and concentrating wave energy and accelerating erosion. I imagine the ocean will eventually claw away under and around and over the structure. More than a year after severe storms damaged property in Collaroy, construction of a long-awaited sea wall is underway. Whether concrete castles or sand castles, buildings that close to a sand shoreline must be living on borrowed time. I am not stock market savvy. Making it deeper? . Looking at that DA via Stu's link, it must have taken a considerable, possibly illegal, effort to keep that out of the hands of those community members with a long record of interest in the matter. It's folly to believe you can hold back the Pacific. 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. Ratepayer/taxpayer bailout, so business as usual whatever happened to caveat emptor? The people responsible for awarding the contracts get huge kickbacks. What they could all agree upon is that council has lost the trust of all whove opposed the seawall over the decades. Separately at the Collaroy pool end of the beach when the walk way became unstable they just craned in these massive bags of rocks on top of each other and said job done - ugly as fuck. Unlike politicians, scientists are usually very open with sharing their knowledge and data, to help inform the public. You may call me names, but the facts still stand. Maybe you New South Weleshpeople do things differently. Lawsuit waiting to happen when a swimmer/surfer gets nailed by a rogue piece of concrete either down the 'Roy or up towards Northy. It's going to be interesting to see how it holds up after this weekend/early next week with another round of resonably solid E/NE cyclone swell hitswho's going down to take more photos and show the aftermath?!! Unfortunately politics and money flow are not associated with longer term planning in Australia at present. Yep totally agree. (Those suburbs are just local ones I know a bit about. Plenty others have discussed it. For those who object to it, there is something hostile about Collaroy's multi-million-dollar sea wall. If so, I presume it may slow around the reef, but then continue north on a more normal migration speed. And this is on a small, weak windswell from the south-east. Rise seems nearly double than the run. The state government and council are together tipping in 20 per cent of the costs for the construction of a wall stretching from Collaroy to South Narrabeen after heavy surf and powerful storms . The local community group has been protesting against a seawall for almost 30 years. From deep state secret spot to modern media darling, what lessons can we learn from Cape Solander's evolution? Just ugly, clog up the waterways etc. At the opening, Mayor Michael Regan spoke fondly of Toms achievements crediting him with adding swathes of precious coastal habitat for protection for future generations. The Mayor also unveiled a plaque that mentioned the line in the sand protest. More than double in wealth the last 7 years. Usually done by compulsory acquisition with the government working off existing market prices. This would reduce the lateral movement of sand along this stretch of beach, reducing the natural erosion while creating some great banks. 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. which is why the video is so interesting. The seven metres protruding above sea level is vertical, even going beyond vertical for the final metre to prevent wave overtopping. Will try and find out. That's assuming the properties are still worth something to the market. 1. Yeah nah. Could be the camera angle but. The DA for the Collaroy seawall was approved while the Northern Beaches Council was under administration. The finished work is 100 metres long by 13 metres high. The idea has never been proposed for Collaroy. Imagine the carnage during the next ECL. Ray Collins eat your heart out.. Good find. that concrete is a lovely blank canvas for some choice words. Thanks BB. However, while they prevent further shoreline erosion, they do not deal with the causes of erosion (French, 2001). Damaged houses and a collapsed swimming pool at Collaroy beach after waves of up to 8 metres hit the coast on June 6, 2016. The sheer number of cables there suggests to me that an offshore reef proposal would be unsuccesful. I'd reckon the road, arterial services (electrical, sewerage, etc) and the houses all factors. I will try and find some pics of my area. https://lighthouse.mq.edu.au/article/september-2021/Living-Seawalls-in-g 5 min [P] Call of the Wild skinny dip at yer local Sea-Walljust doing wot comes natural! 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. "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. 42 online submissions ALL supporting the wall but many seem to think it would be a sloping rock construction. As far as I know their job was to asses the designs given to them by the Coastal engineers, not to actually create any designs. Although ill be constantly monitoring the situation and around at cathedral the beach profile has certainly been getting steeper. Yep pretty significant increase in the height. All the reaserch I did seemed to show that the headland affect and beaches just north of those headlands, i.e. But obviously no owners want to give up tax free capital gains.. dunno has to be a solution that doesnt destroy the beach like collaroy or completely crush home owners, they arent all pricks. I'd be happy to help draft it offline. Ignorant clown" This widely publicized protest was an attempt to promote a pro-democracy, civil liberty, social justice message, and to protest against corporate greed and economic inequality. 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.. 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. These very costly bandaids never work and continue to fail while extending the problem to adjacent properties that don't have the wall. Please enable it to continue. Councils of times gone by should never have approved houses to be built on the beach in known spots of erosion aswell as houses on the beach full stop as sand dunes have there purpose . It ran northwards around the back of the lagoon and on toward what is now Collaroy Beach. If anyone used it and saw the second DA let me know. 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. Any example around the world that have worked with out wrecking a beach but holding back erosion in built up areas ? Will this mean sand depletion north and a build up south? They aint getting crushed. 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