UNIVERSITY of Newcastle Professors Ron Boyd explains the science behind the erosion at Stockton Beach and gives his opinion on the best way to solve it. Dunes provide habitat for highly specialized plants and animals, including rare and endangered species.They can protect beaches from erosion and recruit sand to eroded beaches. Sand nourishment requires adding new sand to the beach from onshore or offshore sources, equal to or coarser than the existing sand. The erosion scarp is now less than one metre from the Mission Australia day care playground, and has already eaten into the old council rubbish dump on Hunter Water and Crown land to the north. Bad example: The harbour in Ventura, California, resembles Newcastle. While youre with us, did you know The Herald is now offering breaking news alerts, daily email newsletters and more? A scientific article written for the NSW Coastal Conference by engineer Lex Nielsen in 2017 showed that the construction of the harbour breakwaters changed the refraction shape of waves coming in to Stockton Beach, resulting in building out the beach in front of the caravan park but concentrating erosion between Pembroke and Stone Streets. The damming of most waterways in the US has thus prevented a major supply of sand from getting to our beaches. Any sand accumulating on the southern side could be periodically removed back to south Stockton, but erosion would likely occur on the northern side. Because the waves break offshore there are none near the beach, so fishermen and surfers would not benefit from this option. As sea level rises beaches will slowly retreat. Geological background Beach deposits predominantly consist of sand particles that can be easily eroded by waves. These bars contained large volumes of sand, deposited in the ocean by waves and the falling tide as it flowed out the entrance channel. 22 a V A_ o ~ ~ E o Ct Z o U) … The original property boundaries extend, and still do, down across the dune onto the beach, with most of the houses and now some high rises built on the beach-dune area. With this option, Stockton gets a beach instead of just a rock wall, and it gets protection in the short to medium term. Online Discussion Terms & Conditions. The BBCS conducted beach profile studies and concluded that from 1989 to 1993 the amount of eroding shoreline in Florida increased from 332 to 356 miles. This depth was increased to 8.4 m by 1950; 11.6 m by 1964; 15.2 m by 1983, and now 18 m deep. This appears to be the default current solution adopted by Newcastle Council and is presented as part of Newcastle Councils 2014 Management Plan. The coastal management plan will use 80,000 trucks over six years and will cost more than $52m. Stockton, on the north side of Newcastle Harbour, is one of the largest beaches in NSW but surprisingly has a serious coastal erosion problem. Adelaide, SA. “With high seas forecast again this weekend, the City carried out emergency sandbag work … on the northern end of the seawall in front of Stockton surf life saving club at Dalby oval, the southern section of the seawall at the Lexie’s accessway and at the southern end of the Mitchell Street seawall near Pembroke Street,” a city council spokesperson said. Why nourish? The council has put in sandbags as a temporary measure to mitigate erosion, with more damage expected at the beach in the coming days as the effects of cyclone Uesi are felt on the NSW coast. Offshore sand nourishment is currently being successfully used to prevent erosion on Queenslands Gold Coast. Happisburgh used to be a great family place to go in the summer, but as it is wearing in to the sea. On the Stockton side, we have learned that there has been an astonishing loss of over 10 million cubic metres of sand since 1816 at an average rate of 41,000 cubic metres per year. This can be clearly seen along the length of the current seawall with the result that the beach and dunes are lost in that location. Seaward movement results from big waves such as in the Sygna or Pasha Bulker storms combined with high tides. “Devastating” erosion at Newcastle’s Stockton beach has put the future of surfing and surf live saving in jeopardy, as anxious residents await further damaging swells at the end of the week. by Georgia Maher | … Consequently, the beach erosion is threatening the housing thus NCC focuses its management on ensuring the beach continues its function for storm protection. Sand dunes are common features of shoreline and desert environments. Forsyth said the beach deserved as much consideration as Newcastle’s port, and losing it was “totally inequitable”. These deposits comprise terrestrial sediment delivered to the coast by rivers, sediment produced by the erosion of coastal landforms by waves, and marine sediment that has been reworked from offshore deposits onto the coast. On Monday Newcastle’s lord mayor, Nuatali Nelmes, called on the state government to declare a natural disaster at the beach, saying property and community safety was “under direct threat”. Another historical indication of the sand once present on the beach is the old mine workings near the Mission Australia Early Learning Centre. So where does Waikiki Beach’s sand come from? These dominant southeast waves then move sand up the beach to the north towards Port Stephens. As a result, there is not much sand on the south coast around Batemans Bay, but lots in the north in places like Fraser Island. The seabed has lowered by 4-12 m. Stockton surfers learnt that their nearshore sand banks lost 2-3 m of sand height just between 1957 and 1995. The 3,600 cubic metres of sand brought in to replenish Stockton beach in December was swept away and even more damage done by this week’s storms. It also has Lexie's on the beach for coffee and meals. Esplanade Beach is below Esplanade Avenue in Pacifica, CA. The ongoing beach erosion since the 1980s has seen the construction of the seawall from Pembroke to Stone Street in 1989, and the sandbag wall at the surf club in 1996. Sand is normally transported seaward in rip currents and erosion is made worse if several large storms like east coast lows follow each other during the winter. This northward movement is the main reason for Stocktons beach erosion. These bars contained large volumes of sand, deposited in the ocean by waves and the falling tide as it flowed out the entrance channel. Generally in Australia, beaches appear not to be receding on a large scale, except in some localised places where natural recession is occurring. Newcastle Council consultants have previously recommended the sand nourishment option, but have also combined it with other hard structures such as seawalls or headlands. Another historical indication of the sand once present on the beach is the old mine workings near the Mission Australia Early Learning Centre. A crane has been brought in to move beachside cabins that were at risk of toppling into the sea after the weekend storms. The advantage of a seawall is clear, it protects the properties immediately behind the seawall in the short and medium term. Miramar Beach parallels Mirada Road in the Miramar neighborhood in Half Moon Bay. The most obvious construction has been the breakwaters. eroding beach, and those nests are more susceptible to predators. Sand nourishment is not a permanent solution as eventually the sand will move on from south Stockton, where it is not being naturally replaced. The 410,000m3 required could be scraped from Stockton Beach north from the Hunter Water lands, or dredged offshore from the sand lobe off Nobbys Beach or the entrance to Newcastle Harbour. Picture: Save Stockton Beach Facebook STOCKTON residents and supporters of the peninsula's beach railled on Sunday to express their frustration and demand action to the rapidly-worsening erosion crisis. In an area such as Stockton, deposits are made when more sand comes in than goes out, and withdrawals occur when you lose more sand than you gain. All consultant reports and informed opinion indicate that Newcastle Harbour works, including breakwaters and dredging, are the source of the Stockton erosion problem. Sand is normally transported seaward in rip currents and erosion is made worse if several large storms like east coast lows follow each other during the winter. “We’re more vulnerable to disasters now – the storm that happened over the weekend wasn’t big but the impact was huge. One of the human activities that have been well linked to the problem of coastal erosion is illegal sand mining along beaches, coastal streams/rivers, and other restricted areas. Dear EarthTalk: I’ve noticed a lot of beach erosion along the eastern U.S. coast. “We’ve already had the storm last year and the sand that was put into the beach, as well as something shy of 10 million cubic metres of sand, is gone and I don’t think we’ll ever see that again.”. Lots of summer northeast waves can also send sand southward temporarily, but this is normally only a short term effect. Older Stockton residents remember the worst erosion of the late 1940s to early 1950s when parts of Dalby Oval were lost. Good nearshore surfing banks were common during that period. This can be thought of as a budget, and similar to a bank account. At Stockton, the dominant direction of approaching waves is from the southeast (about 80%) and the rest from the northeast (20 per cent). The beach and the road are eroding away so during times of high tides there is no […] See details . The second way for sand to move is alongshore drift. The headland option located north near Fort Wallace was preferred as it would place a barrier to sand moving north and retain the new sand for a longer period. Collaroy Beach on Sydney’s northern beaches is a classic example of inappropriate planning and shoreline subdivision that took place more than 100 years ago. Offshore breakwaters are rock structures that are placed parallel to the beach and a few hundred metres offshore. The president of the Northside Boardriders, Simon Jones, an electrician and lifelong surfer who grew up and learned to surf in Stockton, said the destruction of the beach had created a “huge shift” in the local surfing community. The latest 2018 erosion events have become more critical. Shore Club South Beach wurde auf der Grundlage von 43 Hotelbewertungen mit 4,5 von 6,0 bewertet und hat eine Weiterempfehlungsrate von 83%. As discussed in the following paragraphs, a substantial amount of information exists on coastal erosion in California. Like breakwaters, they cause the waves to break further offshore and may protect the beach behind them. This change is a 7% increase over five years. “It’s OK for the older generation who know how to swim and have established themselves in life, but with the kids we’re losing an entire generation,” Forsyth said. “It’s heartbreaking, it really is – the state government is not too proactive,” he said. The mine shaft that was exposed in the surf during September 2017, was originally 110m behind the shoreline in 1895. Deposits are made if we get longer periods of fine weather with small waves and lower tides. A lot of onshore/offshore movement is seasonal or cyclical and is driven by climate. These agencies include the NSW Government, the Federal Government, Newcastle Port leaseholders and users, and NCC. In an area such as Stockton, deposits are made when more sand comes in than goes out, and withdrawals occur when you lose more sand than you gain. The only alternative left to save the beach, and the one with the best chance of success is sand nourishment. This was completed beyond Nobbys in 1891. Four-wheel drivers visiting Stockton Beach this weekend are also urged to exercise caution. Erosion Risks . Continuing delay in fixing the problem is unacceptable. The erosion scarp is now less than one metre from the Mission Australia day care playground, and has already eaten into the old council rubbish dump on Hunter Water and Crown land to the north. The latest 2018 erosion events have become more critical. Older residents will remember the extension of Mitchell Street north in front of the Mission Australia Centre that joined up to Griffith Avenue, the circular road around the beach side of the War Memorial, and the fourth sewage pond that all disappeared during this period. Early maps of Stockton and the Hunter River entrance from 1866 and 1887 show a typical NSW tidal inlet with 6m deep, 90m wide channels, and extensive sand bars on the northern side. This was completed beyond Nobbys in 1891. The beach that lost some 20,000 cubic metres of sand to large swells last year has been battered again. This option works by adding more sand to reduce the wave energy by friction before it reaches the beach. The downside is the price. Governor Macquarie commenced a breakwater to link it to the mainland in 1818. Some of the most interesting facts we have learned from these are the large build-up of sand on Nobbys Beach, and the establishment of a 4.4 km wide sand lobe off Nobbys containing 32 million cubic metres of sand. The first built was the 1989 version from Pembroke to Stone Street, followed by the 2017 version in front of the surf club. The first built was the 1989 version from Pembroke to Stone Street, followed by the 2017 version in front of the surf club. Pollution of coastal environments limits our ability to use beaches for economic, recreational and aesthetic purposes. With this option, Stockton gets a beach instead of just a rock wall, and it gets protection in the short to medium term. Hard structures remove the amenity of the beach and do not protect the beach itself. BHP required a channel depth of 25 feet (7.6 m) be maintained from 1915. Newcastle Council consultants have previously recommended the sand nourishment option, but have also combined it with other hard structures such as seawalls or headlands. History: This map from 1866 shows lots of sand off Stockton before the breakwaters were built. The smaller Stockton breakwater was built in 1886, and the longer 1136 m Stockton breakwater completed in 1912. It seems likely that a further extension in front of the Mission Australia Centre may be proposed as a solution to the latest crises, and this has been suggested at public meetings. Groynes are rock structures placed perpendicular to the beach to trap the longshore flow of sand. The most obvious solution, used extensively by Newcastle Council is building seawalls. At Stockton this results in stairs to the beach left hanging in mid-air and unusable. Again this is seen at Stockton where the worst erosion is north of the seawall in front of the Mission Australia Centre. Artificial reefs are shallow banks made of rocks, bags or tyres that are constructed in the surf zone. The major agent of sediment transport along the coast is longshore drift, which moves the sand southward. The BBCS conducted beach profile studies and concluded that from 1989 to 1993 the amount of eroding shoreline in Florida increased from 332 to 356 miles. Skip to content. This occurs because sand behind the seawall cannot be accessed during an erosion event and has to be sourced from the beach adjacent to the seawall. Current research on beach erosion concludes that hard defences have a detrimental, scouring effect on sand that would naturally accumulate. effects of cyclone Uesi are felt on the NSW coast. Of the three islands, Maui beaches experienced the highest rates and greatest extent of beach erosion with 85% of beaches eroding. In the early 1980s, the city of Miami spent some $65 million adding sand to a 10-mile stretch of fast-eroding shoreline. Political campaign and policies material. Understanding and combating beach erosion can be a complex issue. A faster, more innovative solution is required outside the current box, one that reflects the origin of the problem and the agencies that both benefit from the port, and have a shared social contract with the Stockton community. What happened?! Sand also builds up behind them but erosion occurs between them, so there is no net gain. “It’s a critical time in their life where they’re learning to face challenges. Pollution degrades and destroys unique beach habitat used by animals and plants. The most obvious solution, used extensively by Newcastle Council is building seawalls. The study divided eroding shoreline into critically and non … All consultant reports and informed opinion indicate that Newcastle Harbour works, including breakwaters and dredging, are the source of the Stockton erosion problem. Residents from the Leonardo Arms condominiums on the south end of the island are concerned about the beach erosion they are witnessing behind their complex. The 50m-wide North Stockton fourth sewage pond situated next to the ocean was lost after 1974. A steady progression of dredging and construction occurred since 1866, with dramatic results for Stockton Beach and the offshore bars. The problem with all these hard structure solutions is that they do not create any extra sand, they just redistribute it or accelerate its loss. Over many years Stockton Beach has been the site of numerous shipwrecks and aircraft crash sites. This can be thought of as a budget, and similar to a bank account. Another potential erosion hotspot may develop north of the shorter surf club seawall at Dalby Oval. Good nearshore surfing banks were common during that period. Beach erosion is the Your ad blocker may be preventing you from Leatherman cites U.S. Environmental Protection Agency estimates that between 80 and 90 percent of the sandy beaches along America’s coastlines have been eroding for decades. Stockton Beach is located north of the Hunter River in New South Wales, Australia. The shade trees they cut down have a massive and intricate root system and grow well in sandy soil. At Stockton Beach, north of Newcastle, ... What the problem is, the coast is eroding, it happens all over the world. In simple terms, beach erosion is the loss of sand from a beach. Eroding beaches also mean less habitat for species of animals and plants that are dependent upon the dunes and beaches. Beach erosion occurs if we get more big storm events than periods of fine weather, and if more sand moves north than is replaced from the south. More serious erosion occurred from the 1970s to 1980s. The Council does not have enough funding to fix the whole problem but they do have enough money to keep adding to the seawall each time a crisis occurs. Governor Macquarie commenced a breakwater to link it to the mainland in 1818. (Broome, Seneca, Woodhouse, 1982). T he tourists are leaving and only coming back to take photos of houses that are falling in to the sea, and brick and parts of houses that are scattered along the lovely beach that it has to offer. ‘‘Exceptionally large swells and tides over the past week has eroded the beach creating dangerous drop-offs, flooding and making parts of the beach impassable to all vehicles,’’ National Parks and Wildlife Hunter coast manager Andrew Bond said. /images/transform/v1/crop/frm/324VkdtvqnBSp7aYw6KyqmM/68c3f06b-8d63-429b-b5a2-0f528b9546c8.jpg/r0_192_4857_2936_w1200_h678_fmax.jpg, Newcastle Herald's trusted source for property, SHARK SHOCK: Residents speak of horror as defiant locals return to water, A-League: Jets fight hard to upset Wellington and earn first win of the season, Pandemic delays opening of Nihon University campus, 'I was a shark sceptic', shocked resident says after attack, 'This is a whole different level': Best buds hit big school, W-League: Watch the goals as Jets make statement in rout of Wanderers. 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