King Canute Battling the Relentless Tide*: The Dilemma of Rampant Beach Erosion – Collaroy and South Narrabeen

Posted on by funambulator@live.com
Built Environment, Coastal geology & environment, Local history

Bêifāng Hâitān Cháng-chéng 長城
Collaroy-Narrabeen’s Great Wall of Sand!

Collaroy-Narrabeen’s 長城
Sth Narrabeen Surf Club peering over the Wall of Sand!

The photos (L + R) taken five days ago show the cumulative effects of successive series of storms on the one kilometre plus stretch of coast where Collaroy Beach merges seamlessly with South Narrabeen Beach. The foredune in the pictures (the high ridge of sand) was created from countless poundings by severe storms over the last 100 years, but the gouging out of a phenomenally large quantity of sand to create the current steepness of the ridge owes itself to the most recent destructive event, a massive storm action which relentlessly blitzed the narrow beachfront at Collaroy and Narrabeen in June 2016. For three days huge waves and king tides pummelled the beach, the cost in landform terms was the lost of an estimated 50 metres of beach on what was already a precariously thin strip of coast [M Levy, A Benny-Morrison, D Dumas, ‘Sydney storm: erosion swallows 50 metres of Collaroy, Narabeen beaches’, Sydney Morning Herald, 07-Jun-2016, www.smh.com.au].

Just one sample of the damage to Collaroy Beach & property in 2016

The damage to coastal infrastructure last year was extensive – back fences, balconies, sunrooms, whole backyards and most spectacularly in-ground swimming pools were uprooted – but came as no surprise to locals, coastal geologists or environmentalists. The beach here has had numerous precedents over the years (such as 1913-14, 1920, 1944, 1945, 1967, 1974, 1978, 1986, 1995, 2007), and has been witness to the undermining of foundations, damage to clubhouses, the washing away of houses and the demolition of some homes. The storm havoc in 1967 undermined the foundations of the (then) recently built, high-rise Flight Deck apartment block [J Morcombe, ‘Collaroy beachfront has been an erosion hotspot for a hundred years’, Manly Daily, 07-Jun-2016].

Urban development and sand bank vulnerability
The present predicament of waves swallowing up beachfront properties had its genesis in the early 1900s when people, attracted by the sea and the views, started constructing their houses on Pittwater Road on the edges of the beach. Solutions to the ongoing onslaught from nature of storms was from the start consistently ad hoc. In the 1920 “Great Storm” locals desperately tried to shore up their beachfront cottages with sandbags✧. Warringah Council’s response to each new threat was largely reactive rather than proactive. The frequency of recurrence clearly called for preventative measures…one of the few early attempts by Council to pre-empt the threat was its purchase and demolition of storm-damaged houses between Arlington Amusement Hall and Jenkins Street, to be replaced by a public reserve.

Flight Deck too close to ground turbulence!

By the early 1960s Council’s planning scheme had polarised the community. The Collaroy-South Narrabeen Progress Association lobbied Council to halt its policy of building flats and resume as many houses as possible along the beachfront, demolishing them to create open space. This prompted an opposition group to spring up, demanding that more flats be constructed on the beach edge. This division was mirrored within Warringah Council itself, Councillors were split, some were in favour of increasing the number of flats, some were opposed to the development. A compromise was reached in 1964 which still permitted construction of flats and houses on the fragile edge of the sand bank [J Morcombe, ‘Milestone for Collaroy’s landmark Flight Deck’, Manly Daily, 12-Feb-2016].

Beach erosion and reinforcement measures
More storms in the eighties and nineties prompted Council to try to come up with better thought-out strategies to cope with the burgeoning threat. Earlier construction of rock walls had been haphazard. In 2002 it opted to construct a 1.1km long sea wall along the most pregnable part of the Collaroy-South Narrabeen beach❖. The plan was shelved after several thousand people staged a beach protest against the proposed sea wall.

Again public opinion has been divided – many different views have been voiced on the issue…from those whose properties would not be protected by the wall or by individual walls covering single properties (eg, water can be pushed on to other neighbouring properties which don’t have a sea wall – sometimes because they were denied approval by Council to build one!). Who bears the cost is another issue – coastal engineer Angus Gordon has raised the thorny prospect of “councils building walls using public money to protect private property” (current Northern Beaches Council policy dictates that individual homeowners must pay for the construction of an approved wall for their properties). Beach-goers too, tend to have a differing perspective to those of beachfront homeowners, many surfers point to the way changes to the nature of the beach can affect the wave patterns and thus the quality of surfing (altering the breaks, etc) [C Chang, ‘Bitter battle over Collaroy beachfront has raged for years’, (News) 07-Jun-2016, www.news.com.au

‘Flight Deck’

Given the alarming extent of beach erosion gorged out of Collaroy and South Narrabeen beaches, supplementing the lost sand is vital. Northern Beaches Council tackles what it calls “Sand Replenishment and Beach Nourishment” by sourcing sand from local building sites, and it is also “dredged periodically from the entrance of Narrabeen Lagoon … to replenish Collaroy-Narrabeen Beach” [‘Coastal erosion’, (Northern Beaches Council), www.northernbeaches.nsw.gov.au/.] One of the concerns about using building site materials is the issue of ensuring clean fill…rubbish, waste matter or other, undesirable pollutants may inadvertently end up in the bolstering mix on the beach (risk of litter and impurities, aesthetic considerations).

Collaroy-South Narrabeen beach is considered to be Australia’s third most at-risk area¤ when it comes to the deleterious effects of coastal processes. Thus maintenance of sand bank stability remains a crucial civic objective against a backdrop of rising seas and unpredictable and extreme weather patterns. This is also an extremely costly matter for both Council and the state Liberal government. In 2013 Waringah Council forked out almost $3M to acquire a (potentially endangered?) luxury beachfront property to demolish it and use the land for a public park, and the troubled beach will figure significantly in the allocation of the $69M the state government announced for councils to address beach erosion, coastal inundation and cliff instability [Chang, op.cit.]

Collaroy Beach dune reinforcement

؂؂؂؂؂؂

Endnote: Longshore drift, an agent of beach erosion
A beach is inherently dynamic, motion and change are constant factors in its composition. Lateral movement of sediment (sand, clay, silt and shingle) along the shoreline is known as Longshore drift (or sometimes called Littoral drift). The geological process occurs thus – the prevailing wind powers the waves, directing them towards the coast. When they hit the surf zone they break at an angle to the shoreline (oblique wave action). Sand and other sediments are propelled along the surf zone in a zig-zagging motion, the swash (onshore-rushing water moves the beach materials along), followed by a corresponding backwash (the water returns offshore – if the wave is constructive, it will do so with reduced energy)[‘Longshore Drift’, (Revision World), www.revisionworld.com]

See related post King Canute Battling the Relentless Tide*: The Dilemma of Rampant Beach Erosion – Gold Coast and Adelaide (Nov. 2017)(Cartoon: Clive Goddard)

﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋﹋
* The title is of course a symbolic nod to King Canute (Cnut the Great) 11th century Anglo-Saxon ruler of the North Sea Empire, and the apocryphal anecdote of his futile but persistent efforts to turn back the tide on the seashore
✧ sand-bagging’s value is as an immediate response to flooding and is considered ineffective in countering sand erosion
❖ Council had earlier erected groynes (low walls or sturdy timber barrier) on the beach which had become largely ineffective over time
¤ after the Gold Coast and Adelaide’s north-western suburban beaches

King Canute Battling the Relentless Tide*: The Dilemma of Rampant Beach Erosion – Gold Coast and Adelaide

Posted on by funambulator@live.com
Archaeology, Built Environment, Environmental, Local history

All around this water-encircled continent, wherever there are pebbly or sandy shores, rocks and boulders by the sea, beach erosion is a fact of environmental life. Australian coastal geologists and environmentalists have singled out three areas for particular concern in the light of climate change and rising seas – the Gold Coast of Southern Queensland, Adelaide’s western seaside suburbs (in particular the stretch of coastline from Outer Harbour down to Marino), and Sydney’s Northern Beaches centred on the narrow sandy strip from Collaroy to Narrabeen.

Beach erosion from storm action is the expected end-product of a process when we get waves of higher height (measured from trough to crest) and of shorter periods (ie, the time interval in seconds between succeeding waves passing a specific point) repeatedly crashing onto shore. Storms of greater energy and intensity result in more sand being moved offshore and a storm bar builds up on the nearshore zone. For significant amounts of sand to return to the visible beach, ie, less erosion occurring (the process of accretion), Ocean and sea conditions need to be calmer. Unfortunately for the environment, and for coastal-clinging human habitation, all the trends are in the opposition direction! Concerned coastal watchers are increasingly preoccupied with the sense of a stark future, apprehensively eyeing the very real prospect of untrammelled beach attrition [‘Beach erosion: Coastal processes on the Gold Coast’, (Gold Coast City Council – Discovering Our Past), www.goldcoast.qld.gov.au]

ref=”http://www.7dayadventurer.com/wp-content/uploads/2017/11/image-18.jpg”> GC damage inflict by Cyclone Dinah 1967[/ca
Gold Coast: Human encroachment on a coastal cyclone zone
The Gold Coast at latitude 28° S is in a tropical cyclone prone zone, its history of cyclone events goes back to the 1920s, including crunch years such as 1967 when eleven cyclones hit the Coast in rapid succession. Like Sydney’s Northern Beaches (see separate blog post) the Gold Coast/Surfers Paradise area is especially susceptible to property damage due to the same development pattern of building too close to the beach (multi-millionaires’ coastal mansion syndrome?). A 2009 study by the Queensland Department of Climate Change (DCC) estimated that there are 2,300 residential buildings located within 50 metres of sandy coast and 4,750 within 110 metres” [Tony Moore, ‘Gold Coast beach erosion plan: Is the plan on the right track?’ Brisbane Times, 05-Jul-2015, www.brisbanetimes.com.au].

=”http://www.7dayadventurer.com/wp-content/uploads/2017/11/image-17.jpg”> Gold Coast erosion: Sand cliffs of epic proportions![/capti
Queensland’s volatile summer storm seasons will undoubtedly continue to be exacerbated by climate change and rising sea levels. In recent years an intensification of the cyclonic onslaught on the South Queensland coast has seen the buildup of towering sand ridges on beaches like Narrowneck and Broadbeach, as a result of massive quantities of sand being gouged from the beach❖.

Gold Coast strategies to counter erosion
In direct response to the devastating 1967 cyclones the City of Gold Coast commissioned the Dutch Delft Report and established a Shoreline Management Plan to follow up its recommendations. New seawalls were constructed to bolster the beaches and an artificial reef created at Narrowneck Beach (the Delft Report called for Gold Coast beaches to be widened to withstand severe weather conditions and restorative work was intended to re-profile the vulnerable beaches). The Shoreline Management Plan strategy incorporates a scheme to shift sand from south of the Tweed River (from NSW) through a system of bypass pumping to replenish the beaches on the Gold Coast [‘Gold Coast Shoreline Management Plan’, Wikipedia, http://en.m.wikipedia.org. Transporting sand has proved a costly exercise for the Gold Coast Council ($20,000 a day during severe storm activity periods to shift 20,000 cubic matures of replacement sand) [‘Battling erosion on the Gold Coast’, (Splash ABC Queensland), www.splash.abc.net.au]

Adelaide hot spots
Adelaide’s north-western beaches’ susceptibility to the climatic forces of erosion mirrors that of the Gold Coast…and similarly it has been plagued by the same degree of imprudent decision-making by planners and developers resulting in property lines being positioned too close to the shoreline. A conspicuous case in point being Tennyson Beach 14km from Adelaide CBD. Tennyson locals recall that a stretch of its celebrated coastal dunes was washed away by massive storms in the 1960s…after it was restored to its previous height, amazingly houses were built on the same vulnerable dunes! Erosion at nearby West Beach has become so problematic that the West Beach Surf Life Saving Club has given consideration to moving the location of its clubhouse [‘Adelaide beachfront housing “facing erosion risks” like those at Collaroy, Sydney’, ABC Radio Adelaide, ABC News, 08-Jun-2016, www.abc.news.net.au

Coastal inundation
As elsewhere the fear for Adelaide coastal watchers is the inexorable rise of sea levels – scientists have predicted that its low-lying coastal land will be inundated with the bulk of the city’s beaches under water by 2050! Geologists and coastal experts such as Dr Ian Dyson have predicted that the great majority of Adelaide’s sandy beaches are at risk of being reduced to the same denuded state as Hallett Cove – once a glistening sandy beach, now a rocky foreshore bereft of sand¤. Dyson forecasts that the only beaches likely to survive, albeit as “pockets of beaches” on the metropolitan coast beyond 2026 will be at Glenelg, Henley Beach and Semaphore [Thomas Conlin, ‘Expert says key Adelaide beaches could disappear within a decade because of rising sea levels and erosion’, Sunday Mail (SA), 24-Jun-2016, www.adelaidenow.com.au

Notwithstanding the pessimism of scientific experts, the state government’s Coastal Protection Board maintains its sand-replenishment programs are effective in meeting the challenges which are undeniably formidable. Dr Dyson however has been critical of the authorities’ over-reliance on rock wall defences, contending that “retaining beaches (were) a losing battle without angled breakwaters or groynes at the southern end of erosion hot spots to slow sand movement [Conlin, ibid.]

Endnote: A dynamic problem – the natural drag of sand by the elements
An important factor contributing to beach erosion is the natural tendency of the ocean to drag coastal sand in a northward movement. This affects both Adelaide and the Gold Coast. On the GC’s southern beaches where sand is plentiful, the drift north to replenish the northern GC beaches is impeded by the presence of rock walls and groynes which interrupts the free flow of sand northwards [Tanya Westthorpe, ‘Sand erosion threat to prime Gold Coast tourist beaches’, Gold Coast Bulletin, 02-Aug-2012]. the top of the Gulf St Vincent. Sand replenishment and maintenance thus is a major challenge for the more southern lying beaches like Kingston Park and Seacliff which are in continually peril of being sand ‘starved’. Aside from the logistics of managing this, sourcing sand from quarries is proving an increasingly expensive exercise for the authorities [‘Sand carting plea to save Adelaide’s vulnerable beaches, including Seacliff and Kingston Park’, (E Boisvent), 12-Oct-2016, www.news.com.au]

See related post King Canute Battling the Relentless Tide*: The Dilemma of Rampant Beach Erosion – Collaroy and South Narrabeen (Nov. 2017)

_____________________________________________________________
* The title is of course a symbolic nod to King Canute (Cnut the Great) 11th century Anglo-Saxon ruler of the North Sea Empire, and the apocryphal anecdote of his futile but persistent efforts to turn back the tide on the seashore
❖ prompting sections of the media to jocularly re-label Broadbeach as “Steep Beach”
¤ Dyson blames ill-considered development and the construction of a beach marina for the degradation of Hallett Cove

The Arlington Amusement Hall, Collaroy’s Architectural Jewel from Yesteryear

Posted on by Sloane Snodgrasse
Built Environment, Cinema, Heritage & Conservation, Local history

Over recent months Sydney “Pub Tsar” Justin Hemmes’ Merivale Group acquired the Collaroy Hotel on Pittwater Road for a reported $21 million⋇. The hotel (currently closed for renovation) is situated in one of the Northern Beaches’ finest old and best preserved buildings, the Arlington Amusement Hall✦. A hotel since the late 1990s the Arlington’s premises has traded under various names including ‘The Collaroy’ and the ‘Surf Rock Hotel’. Earlier than this the building had housed the Northern Beaches’ first wine bar called ‘1066’. The building also contains the separate Collaroy Beach Club.

(Photo: Northern Beaches Council)

The iconic building with its asymmetrical Federation brick facade has a commercial life story dating back to the First World War. It was built by Herbert Williamson for his wife Christina somewhere between 1915 and 1919. It was officially opened as the Arlington Amusement Hall in 1921 although it had already been used a cinema showing silent feature movies from 1919.

The Collaroy in 2017

At the time of the Arlington’s public opening the local newspaper described it thus: “The hall is situated right on the beach and attached to it are four shops … The hall is commodious, and is approached by a fine vestibule, a stage and dressing rooms and also a gallery add to the comfort of both entertainers and patrons …” Originally the building contained a row of (four) retail shops with attached 1st floor residences. We know that the business enterprises of three of these shops comprised a draper, a chemist and a stationer.

Collaroy, a beachhead prone to sand erosion
Arlington Amusement Hall’s location, built right on to the beachfront has made it and other buildings around it on that side of Pittwater Road susceptible to storm damage. In 1944 huge storms lashing the beach washed away some three metres of the Hall’s foundations. Fortunately the large building was spared the worst of the2016 onslaught when many nearby properties had their frontages, fences and walls uprooted in the massive winter storms…not so fortunate was the Collaroy Beach Club premises affixed to the Arlington Hall/Hotel which lost a balcony in the violent onslaught of savage nature.

The Arlington in the 1920s

PostScript: Collaroy’s other building relic
It is interesting that Arlington Hall started its life as a picture theatre because today when people associate Collaroy with cinema, they think of another old historic building on the opposite side of Pittwater Road – the still operating, independent Collaroy Cinema (trading as ‘United-Cinemas” in conjunction with Avalon and Warriewood cinemas further up the peninsula). Collaroy Cinema, an Art Deco building from the 1930s, with its garish and (to some tastes) sickly blue-painted exterior, stands out from the modern beach shopfronts around it. The Art Deco building retains its elegant design, but its tired, slightly battered appearance representing nearly 80 years of lived-in experience is in stark contrast with the “tender loving care” bestowed on The Arlington. Collaroy Cinema remains one of the relatively few surviving and operating picture houses of its kind in New South Wales.

‘Indy’ picture house in Pittwater Road

Nomenclature: the name of both the suburb and the beach derives from the paddle steamer SS Collaroy which was stranded off the beach for three years in the 19th century (1881-84).

≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍≍
⋇ coming on top of Merivale’s 2016 acquisition of another Northern Beaches’ landmark, the even more historic Newport Arms (rebranded by Hemmes as ‘The Newport’)
✦ Amusement Hall seems to be a bit of a misnomer…rather than being a place where you’d expect to find penny arcade machines and games of fun and luck (the domain of English style seaside piers), these amusement halls, also common in the US in the same era, could simply be large buildings which functioned as multi-purpose community halls

References:
John Morcombe, ‘Arlington Amusement Hall a Collaroy icon for almost a century’, Manly Daily, 31-Oct-2014
‘Collaroy/Narrabeen, Voices from the Past’, Australian Heritage Festival, 01-May-2017, www.nationaltrust.org.au
‘The Collaroy hotel’, Architects Nicholas + Associates, http://anplusa.com/projects/the-collaroy-hotel/
‘Art Deco Cinemas, Picture Palaces and Movie Theaters’, www.decolish.com

Cursed Movies II: ’The Conqueror’ Film’s Catastrophic Afterlife

Posted on by E Curb Nottus
Cinema, Media & Communications, Popular Culture

The Conqueror (1956) was a doomed film, both cinematically and in terms of its devastating human cost. Its reception critically was abysmal and its performance at the box office was less than mediocre. Reviews for the movie disaster have been consistent in assigning it an unenviable position as one of cinema’s worst ever pictures, one of Hollywood’s greatest “turkeys”¹.

Yahoo!Movies described The Conqueror as “the most toxic movie ever made”…tarnishing the careers of those who appeared in this egregious stinker, especially its star John Wayne, effectively bankrupting RKO Pictures (costing a blown-out $6 million) and contributing to the deaths of an inordinate number of its cast and crew².

John Wayne, faced with the need to fulfil the third and final picture of his contract with RKO, apparently fished the discarded script out of the rubbish bin and convinced the assigned director Dick Powell (who in turn convinced RKO’s owner Howard Hughes) to make the film with Wayne playing the role as Mongol warlord Genghis Khan (a role intended apparently for Marlon Brando). By all accounts Wayne was grossly miscast⋇, interpreting the great Mongol leader as a cowboy (probably an entirely natural notion for the Duke!). The script (by Oscar Millard) was terrible and vacuous as the following inane, awkward samples of the dialogue illustrate:

Temujin: I feel this Tartar wo-man is for me, and my blood says, take her. There are moments for wisdom and moments when I listen to my blood; my blood says, take this Tartar wo-man.
૱…………૱…………૱

Temujin: She is wo-man, Jamuga…MUCH wo-man!

૱…………૱…………૱

Snow Canyon, radioactive movie set

The Conqueror was a patently absurd vehicle by any standard – as an attempt at film art or as a plausible historical reconstruction…but as disastrous as the movie was, it was to have far more serious and far-reaching tragic consequences. Most of the filming took place at Snow Canyon¤ near Saint George in Utah, 130 odd miles from a nuclear test site where the US Government detonated 11 above-ground nuclear explosions in 1953. By the time location filming took place, June-August 1954, winds had shifted the still highly radioactive soil downwind to Snow Canyon. The shooting of the action sequences (in an adventure movie this was most of the film!) necessitated that the performers wallowed in the carcinogenic dust day after day.

The film’s producers (Hughes and Powell) were aware of the proximity of the atomic testing before shooting started but had been assured by the government that the atomic tests posed no risks to public health, a gross deception (self-deception?). Compounding the dilemma, at the end of the location work Hughes ordered that 60 tons of the radioactive reddy-brown dirt from the Snow Canyon site in Utah be carted back to the RKO film set at Culver City for re-takes!

Human Fallout
Consequently, by about 1980 it could be shown that 91 of the 220 individuals who made up the film’s location staff had contracted cancer including its stars Wayne, Susan Haywood, Agnes Moorehead and Pedro Armendáriz (one of Wayne’s sons who had a small part in the movie later also died of cancer). There is no definitive way of proving that the contaminated soil was 100% to blame for the cancer deaths…Wayne had a heavy smoking habit (up to seven packs a day!), as did others in the cast, which could have been a contributing factor to the malignancies⍔. The harmful effects of the area’s radiation however is undeniably part of the explanation for such an aberrant outbreak of disease. Robert Pendleton, professor of biology at the University of Utah, concluded that the toxic fallout of Saint George was of epidemic proportions, that the toll was about three times what might be expected³. In addition it is well documented that health checks on ordinary residents of Saint George similarly revealed higher incidences of cancer than other comparable areas⁴.

PostScript: Howard Hughes’ own private purgatory
As is well-known, The Conqueror’s Producer Hughes lived as a recluse, (literally) hermetically sealed off from the rest of humanity, for his last years. It is believed that he deeply regretted his decision to go ahead with The Conqueror project. Hughes delayed the film’s theatrical release and attempted to purchase every single print to try to keep it out of the public eye. Part of his penance in his hermit mode of existence, it has been claimed, was to watch and re-watch the disastrous movie every day (along with Ice Station Zebra⁵).

╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼╾╼
⋇ Wayne as a 13th century Asiatic warrior was a ludicrous choice, as the casting was overall – only two of the entire performers were of Asian descent. Many of the doomed extras were undisguised Navajo Indians
¤ Howard Hughes thought the rolling red hills would be similar in appearance to the steppes of Mongolia
⍔ although ‘Duke’ Wayne did not die from his lung cancer (which went into remission) but from the subsequent stomach cancer he contracted [Gaggiano, below]

¹ included in H & M Medved & R Dreyfuss’ 1978 The Fifty Worst Films of All Time
² ‘The Conqueror: The story of the most toxic movie in Hollywood history’, (Yahoo!Movies, 09-Nov-2016), www.uk.movies.yahoo.com
³ Pendleton: “…in a group this size you’d expect only 30-some cancers to develop. With 91, I think the tie-in to their exposure on the set of The Conqueror would hold up even in a court of law” – Karen G Jackovich & Mark Sennet, ‘The Children of John Wayne, Susan Hayward and Dick Powell Fear That Fallout Killed Their Parents’, People, originally posted 10-Nov-1980, www.people.com
⁴ Rory Carroll, ‘Hollywood and the downwinders still grapple with nuclear fallout’, The Guardian,, 06-Jun-2015, www.guardian.com
⁵ Greg Caggiano, ‘The Conqueror (1956): The Film That Killed John Wayne … Literally’, Reel to Real, 26-Jul-2010, https://gcaggiano.wordpress.com/2010/07/26/the-conqueror-1956-the-film-that-killed-john-wayne-literally/

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