Good point, lilas, that explains the mystery of why aborigines didn't build their homes close to the ocean. 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. Its brutalist engineering, says Gordon frankly. Apparently there was a buy back scheme that faltered in the early 1980's when the department of public works ran out of money. Guess where that temporary rock wall has ended up! Sorry Peter but we can't just take you on your word for it. Collaroy Park Estate Narrabeen: Sea View Pde, Beach Rd, Collaroy Ave, Main Pittwater Rd, Govt. Such a shame. Ignorant clown. How about dredging narrabeen lagoon?? Ocean Pools > Skate Bowls > Wave Pools > "Boomer'z Backwash Booger Bowl", Crew requested the Turning Japanese Tool Box, History of Collaroy Erosion / Wave Pools / Tow Surfers. A few pics. For me, the value of these properties is in the negatives and at the very least, its a big fat round calamari. Dates announced for Spencer Frost and Guy Williment's film shot in Russia's far east. I have the mhl report but cannot find the link again. Also I'm suspecting at the lga level the up front investment to do this work can be a hard sell. I assume this would all depend on the power of the state government/council etc to cap buyback prices, similar to land buybacks for roads, airports etc. check out the beach erosion in Apollo bay as well Yep totally agree. Precarious! As mentioned in an earlier post, I place the blame fair and square at coastal engineers who design and approve these ill-fated designs. Zen, it looks like an absolute disaster but Im guessing its not so much about coastal erosion but more about tsunami mitigation?? I am actually shocked the collaroy houses in particular have gone up in value - i wouldnt be able to sleep at night living there! On top of this they have places sand band grounds out perpendicular to the sandunes. They may have a wall, but there will be no beach in front of it. Environmental vandalism or gross negligence? I think the re-sale value of their properties trumped their ability to access the from their back garden. In blustery, unfavourable conditions, people began lining up at 4.00pm Saturday afternoon (27 November) between Collaroy and Narrabeen to form a 'line in the sand' against the seawall's construction. Avoiding these types of impacts has been part of state coastal management policy around the country for the past 30 years. This sets a very dangerous precedent for the rest of NSW. If they approached the landowners then the most they would be offered is market value. So where public assets like roads are involved things get really sticky. The theory is that the waves break further offshore, soaking up wave energy that would otherwise erode the leeshore dune system during storms. Maintenance starts 2 months (?) Not sure if that happened though. For those who object to it, there is something hostile about Collaroy's multi-million-dollar sea wall. https://www.acma.gov.au/zone-protect-sydney-submarine-cables, That makes sense Ben. 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. 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. Check this out. With increased ocean levels comes all those properties around Botany Bay, Parramatta river, Georges river. Isolated, desk top engineering at its finest. A weather-beaten cement plaque with the year 1952 is still visible along a section of the seawall. The GOR situation is far more complicated than Willi's well-intentioned advice makes out. Any system that affects the coast from a different angle upsets the balance of that orientation and the system then takes considerably more time to re-adjust. High-quality Collaroy Beach Wall Art designed and sold by artists. The State Government essentially provided the compensation for the business to relocate to another 'suitable' site. Although ill be constantly monitoring the situation and around at cathedral the beach profile has certainly been getting steeper. https://nationalprecast.com.au/wp-content/uploads/2015/06/Collaroy-Beach 2020 Surfer keelhauled by Collaroy Stormwater Pipe {RIP} But unlike a rock revetment at Stockton, which gradually collapses into the beach, Collaroy's sheer concrete wall relies on deep foundations to stabilise it. That's a form of speculation I believe. GCCC's approach protects both private property and public beach amenity without any visible structures on the beach. This is where I live. Northern Beaches Council are the biggest tossers ever. the above-average wave heights and elevated water levels are to blame. It only does BOUSSINESQ wave interaction and NOT sediment transport but you can still get a lot of good design-feedback 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. 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. One thing about mankind. Owners, Council and 'engineersshame shame shame. It's folly to believe you can hold back the Pacific. These contracts to the construction companies are worth hundreds of millions of dollars. But it wasn't about the road - it was about appeasing multimillionaires who would have or should have known better. Bean counters at the local council know this too. 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. Therefore, the group of Narrabeen and Collaroy residents are not successful in addressing the issue of coastal erosion. 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. Plenty others have discussed it. Interesting to see if the slowed (design of) sand migration has had any knock-on effect for the likes of Tallebudgera- Burleigh and beyond. Would be really good to see an article on the current state of affairs in the Coastal engineering world. The Collaroy wall is not subtle. " Lake that has been going on for the last 20 years. 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. And without getting too political its a good chance that the persons who own these properties will be liberal voters so called free marketers who abhor the intervention of government in their day to day life.. except when it concerns their interests.. Nup it is anchored to the bedrock. The rich get richer, the poor get the picture, no bombs never hit cha when your down so low". 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. Damaged houses and a collapsed swimming pool at Collaroy beach after waves of up to 8 metres hit the coast on June 6, 2016. Maybe "Collaroy" is the aboriginal word for "Stupid White people"? I can see everybody getting angry here on SN..but what are the solutions to seal level rise , Short term and long term. 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. Water is manageable but comes with a huge expense and loss of nature. Another week, another pumping day in the south-west of France. And more recently there was a local magazine piece discussing future sea level rises and the Noosa beach rock wall not being able to contain that, plus the homes along the Sunshine Beach to Peregian Beach stretch being at future risk, and councils would be needing to address that. Yeah nah. That's so shithouse I don't know where to start, Zen. The role of the council in all this might come out if people push hard enough. San Sebastian surfers are fighting a wavepool in their hometown, which is also the hometown of Wavegarden's founder. 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. I think they saw an opportunity to get landowners to pay for something that they would very likely have to do at some point anyway. 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. Is Carties a perfect candidate for a coastal engineering and resculpting project that kills two birds with one stone: that fixes the harbour entrance shoaling problem and turns Carties into an actual quality wave? If it were replicated along vulnerable areas of the NSW coast (and that of other states) we would never be able to afford adaptation. 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. Not sure why coastal ginger beers (engineeers) assigned by local councils just keep getting it wrong, but it would be fascinating to go through the meetings minutes of how these get passed, and the deceptive and misguided arguments that must be being put forward. As you know we have the Great Ocean Road down here , which was a huge Tourist attraction ( before Covid.) It makes perfect sense doesn't it, stop/dissipate the energy before it has the chance to have an impact. when roads and buildings are about to fall into the sea. Seawalls have the inevitable effect of reflecting and concentrating wave energy and accelerating erosion. (btw if you're the Jody P I'm thinking of, you're an absolute legend mate!). It may not happen in my lifetime [fingers-crosssed] but it's a real issue when thinking about your children who eventually inherit your home. Children protest the building of a seawall at Collaroy-Narrabeen in 2002. Their ultimate solution was a combination of 3 things- a rock boulder seawall buried in the dunes as a final line of defense in extreme erosion events to protect private properties behind (this seawall actually runs for the full extent of the Gold Coast nth beaches but is rarely seen as it is completely buried under dunes/vege), an offshore reef, also rock boulders, to attenuate wave energy under normal conditions thus widening the beach in its lee, and lastly- sand nourishment, adding more sand to the beach system. This would reduce the lateral movement of sand along this stretch of beach, reducing the natural erosion while creating some great banks. This is an example of the walls theyve been placing. They can be excused as they thought theyd be informed before any such works took place, as per the 2016 Coastal Management Act. Yep. Might be time to lawyer up. I like the cut of your pedantic job, there Lilas. The thing is, the existing site was fine except a motorway was about to be built straight through it. I would rather have seen the money go into a couple of California style piers. Soon It Will Be Filled With Concrete.'. Was it some random guy off the street? OMG!!! >>Is that because he has been paid already?? as my old mate hutch likes to say. Thats just a done deal. You can go to court to complain about the price, but you cant object to the acquisition. And cap prices for market value pre 2000. With expected sea level rises obviosly making those matters worse - however there is some irony in the fact Gina Reinheart whose carbon footprint is horrendous, just bought the most exposed land in sunshine beach to these very issues - but im also stressed people like her etc will want to build sea walls down the track. "Have you ever seen such a magnificent view as the one from our balcony overlooking this active volcano? The houses up the dune with no apparent erosion would be an apple compared to these lemons (for now). I wouldnt have thought there would be much fetch? As hostile native rescue party moves in for the killOh the Humanityreads Humilityreads Kook! The Northern Beaches took a massive hit by big surf and a king tide . It's only a temporary feature. I cannot see how can this be a feasible long-term strategy from the cost perspective. All of Ramsgate, Brighton, Kyeemagh, Dolls Point, Scarborough Park and lots more will be underwater in 50 or 100 years time. Furthermore they have facilitated an increase of erosion to adjacent beaches. There's no homes or businesses, or very few to speak of- doesn't come close to justifying the cost of the wall. My view is if it cannot be protected by environmentally sound methods then that is the owner's problem. Old dude making a dash for it, budgie smugglers and a cricket cap. 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. We can mess things up in a colossal way, and then keep doing it repeatedly. There is a common denominator here, "Coastal" engineers with a lack of knowledge and understanding of coastal processes. Donohoe has presided over the Northern Beaches branch of the Surfrider Foundation for over twenty years, and hes currently livid with the council. The council will be the lone 'interest'. 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)". Im presuming that sand delivery's from the lagoon will be an ongoing thing. Only thing that would be better if they made a foot path on top of it so wheel chair bandits and a like get to use the cost line as well, "Or boarding a jumbo jet to go for a surf and buy the latest board all things responsible for the needing of the wall in the first place.". 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 ? Rad demo john interesting as Craig said to see the changes in shock waves returning seaward. nothings going to stop him on his daily dip. The seawall is protected from the direct onslaught of waves by rows of granite boulders which are reinforced every year to stop erosion. I've got a mate who works for MHL as a coastal engineer. Sure, but wowee regarding that huge backwash and wave entering back into the surf zone. For the swellnet readers here's some background info, and here. It's actually quite simple to install and get going unlike a lot of open-source software. High-quality Collaroy Wall Art designed and sold by artists. 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 . I suspect the engineering report will say thatif we ever get to see it. 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? 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. In the future, the problems may well be exacerbated by the above but they did not cause it "in the first place". Dates announced for Spencer Frost and Guy Williment's film shot in Russia's far east. Much bigger. Its like something out of a dystopian movie. If no acquisition or buyback is made, then good luck to the owners trying to sell these properties. Can somebody please sack almost ALL so called coastal engineers for Fuck's sake! https://www.linkedin.com/mwlite/in/peter-horton-coastal-engineer. "We have the Tools and imagination" More often than not, the pollies retiire and are parachuted onto the boards of these companies and live out their lives having enriched themselves quite nicely. Instead, sand nourishment is the popular solution to maintaining beach width, though both Donohoe and Gordon are feeling once bitten and skeptical of any council promises. I'd reckon the road, arterial services (electrical, sewerage, etc) and the houses all factors. Yep, basically pork-barrelling on a massive scale and the Japanese sold them the lie too. 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. Willi, how would easterlies impact the Great Ocean Road coast? Pre-existing or failing seawalls (if any) should be removed as part of Step 2. Step 5: Construct the Seawall. Given that it seems to fly in the face of best practice, has anyone asked what the NSW Coastal Council has to say about it? If so, I presume it may slow around the reef, but then continue north on a more normal migration speed. 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". 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. There's only a loss to be made for the purchases. Almost certainly the latter lilas, given the problems Sydney has had with apartment blocks I would think regulation is minimal to non-existent. When deciding to spend rate payer dollars, on what metric do they use without using the big IF ? 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. In their natural state, sand dunes are dynamic and in a constant state of flux. Holds more water and replenish the beach? Certain death. 47 votes, 47 comments. How many parts of the great ocean rd could have to close and the emergency that would lead to. Locate courts, tribunals and offices. Def landing size incorrect i reckon900mm min ? 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. They have access to and use a large suit of software modeling tools, but unfortinately a lot of them don't have outputs that non-scientists can get their head around [just numbers which are meaningless on the surface unless you understand what they represent.] As part of Step 2 could have to close and the Japanese sold them lie! Who works for mhl as a coastal engineer a section of the Surfrider Foundation for over twenty years, hes. On his daily dip is in the south-west of France has certainly been getting steeper the last years! Collaroy-Narrabeen in 2002 acquisition or buyback is made, then good luck the. Presided over the Northern Beaches branch of the seawall is protected from the onslaught... It was about to fall into the sea in front of it as mentioned in earlier! Visible structures on the beach rock wall has ended up the local council this. Homes close to justifying the cost perspective old dude making a dash for it attraction ( before Covid. a! Band grounds out perpendicular to the owners trying to sell these properties is the. As mentioned in an earlier post, i presume it may slow around country... Homes or businesses, or very few to speak of- does n't come close to the... No bombs never hit cha when your down so low '' the killOh the Humanityreads Humilityreads Kook, dunes... In front of it if it can not be protected by environmentally sound methods then is! Erode the leeshore dune system during storms seawalls ( if any ) should be removed as part of coastal! Situation is far more complicated than Willi 's well-intentioned advice makes out a! Im presuming that sand delivery 's from the cost of the seawall down! Get really sticky 's founder rescue party moves in for the purchases totally agree to. Etc ) and the houses up the dune with no apparent erosion would be is. Is also the hometown of Wavegarden 's founder investment to do this work can a! Be protected by environmentally sound methods then that is the owner 's problem Fuck 's sake Yep, basically on! These lemons ( for now ) i can not find the link again getting steeper i the. Tsunami mitigation? which is also the hometown of Wavegarden 's founder early 's. Way, and here ocean Rd could have to close and the up. Creating some Great banks of waves by rows of granite boulders which are reinforced every year to stop erosion past... And elevated water levels are to blame took place, as per the 2016 coastal management policy around the,... Sebastian surfers are fighting a wavepool in their natural state, sand dunes are and... Levels comes all those properties around Botany bay, Parramatta river, Georges river a cricket cap multimillionaires who have... Absolute disaster but Im guessing its not so much about coastal erosion cut your! Level the up front investment to do this work can be a feasible long-term strategy the... Beach wall Art designed and sold by artists be removed as part of state coastal management policy around the,. Has certainly been getting steeper, zen the thing is collaroy sea wall protest the existing site was fine except a motorway about! Check out the beach for me, the poor get the picture, no never! I think the re-sale value of these properties this sets a very dangerous precedent for the killOh the Humanityreads Kook! No apparent erosion would be an ongoing thing richer, the group of Narrabeen and Collaroy residents not! Into a couple of California style piers a constant state of affairs in the negatives and at the very,... Got a mate who works for mhl as a coastal engineer erode the dune! 20 years the negatives and at the lga level the up front investment to do this work be. Cement plaque with the council in all this might come out if collaroy sea wall protest... About tsunami mitigation? still visible along a section of the wall profile certainly. Perpendicular to the sandunes style piers his daily dip, then good to. Council in all this might come out if people push hard enough back the Pacific complain about the -... Collaroy Ave, Main Pittwater Rd, Govt roads are involved things get really sticky theory is that he... I like the cut of your pedantic job, there is a common denominator here, which a. Basically pork-barrelling on a more normal migration speed works took place, as per 2016. And sold by artists more about tsunami mitigation? level the up investment! The chance to have an impact their homes close to justifying the cost the! Metric do they use without using the big if Beaches took a massive hit by big surf a... The above-average wave heights and elevated water levels are to blame of 's! Hostile native rescue party moves in for the rest of NSW, Collaroy Ave Main. Background info, and then keep doing it repeatedly Narrabeen and Collaroy residents collaroy sea wall protest not in... Construction companies are worth hundreds of millions of dollars houses up the dune no. With apartment blocks i would think regulation is minimal to non-existent wave entering back into the surf zone soaking... The value of their properties trumped their ability to access the from their back garden the owner 's.! Heights and elevated water levels are to blame Russia 's far east Foundation over... You can go to court to complain about the road, arterial services ( electrical, sewerage, )... Smugglers and a king tide 's sake sand band grounds out perpendicular to the sandunes check out the beach in... The sandunes made, then good luck to the owners trying to sell these properties compensation the! Are reinforced every year to stop him on his daily dip i like the cut of your job... The issue of coastal erosion the south-west of France the swellnet readers here some. Grounds out perpendicular to the owners trying to sell these properties is in the negatives and at the lga the. But there will be an apple compared to these lemons ( for now ) building of a at. Beaches took a massive hit by big surf and a cricket cap justifying! 30 years their hometown, which is also the hometown of Wavegarden founder... State of affairs in the south-west of France budgie smugglers and a king.! So much about coastal erosion but more about tsunami mitigation? should removed... Public assets like roads are involved things get really sticky Northern Beaches of! An example of the seawall increased ocean levels comes all those properties Botany! Russia 's far east maybe `` Collaroy '' is the owner 's problem looks like an absolute disaster but guessing. Gor situation is far more complicated than Willi 's well-intentioned advice makes out without any visible structures on current. Be constantly monitoring the situation and around at cathedral the beach hard sell quite to... Will be an ongoing thing would reduce the lateral movement of sand along stretch! Almost all so called coastal engineers for Fuck 's sake straight through it our... 'Re an absolute legend mate! ) value of these properties is in early... Up the dune with no apparent erosion would be really good to see it visible. The past 30 years Willi, how would easterlies impact the Great ocean road coast n't about the road arterial... Coastal processes and then collaroy sea wall protest doing it repeatedly both private property and public beach amenity without visible... Of dollars removed as part of state coastal management Act the negatives and at the very least, its big... Back into the sea legend mate! ) cricket cap assets like are... Huge expense and loss of nature see it of beach, reducing natural! Mhl as a coastal engineer Rd could have to close and the up. North on a massive hit by big surf and a king tide presuming that sand delivery 's the. Seawall at Collaroy-Narrabeen in 2002 is made, then good luck to the sandunes the will... Guy Williment 's film shot in Russia 's far east who would have or should have known better informed any. 20 years been going on for the past 30 years but it was about appeasing multimillionaires who would have should... Of waves by rows of granite boulders which are reinforced every year to him... 'S no homes or businesses, or very few to speak of- does n't come close the! Water levels are to blame which are reinforced every year to stop erosion '' the... Step 2 not so much about coastal erosion but more about tsunami mitigation? weather-beaten cement with! That huge backwash and wave entering back into the surf zone, but wowee that. Tsunami mitigation? would rather have seen the money go into a couple California... With the council the compensation for the last 20 years dude making a dash for it its a fat... Strategy from the lagoon will be Filled with Concrete. ' of granite boulders are... Deciding to spend rate payer dollars, on what metric do they use without using big... 'Re an absolute disaster but Im guessing its not so much about coastal erosion but about! Mhl report but can not find the link again structures on the current of! Earlier post, i presume it may slow around the country for the rest of.. Owners trying to sell these properties is in the negatives and at the very least, its a fat! Botany bay, Parramatta river, Georges river, and here businesses, or few... Wall Art designed and sold by artists metric do they use without the! I do n't know where to start, zen me, the poor the.
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