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Discussion in 'Alpine & Snow' started by Claude Cat, Jun 3, 2016.
Drone footage of the southern end of the 'photoshopped' footage above.
The properties at Collaroy for sure. Not certain about those at Narrabeen. And the Collaroy Services club, that's on Pittwater Road.
Severe damage also at Shelley Beach, a protected area, well from the south at least. This was a north easterly storm.
The rebuild commences. How much this week , 20 is just not enough.. It's to look the goods.
yeah just saw on ABC news a report of 618mm since Friday for Robertson
Waves over North Narrabeen Surf Club I think not. Half the Northern Beaches wouldn't be here me included if that was the case.
Had just over 1.5cm in the gauge so far at Mt P. Might see more than 20 this week.
Whatever you think mate, UNSW are fraudsters? I think not.
You are so correct, a big cycle, The Gold Coast 1972 & 1974 & 1968 .. will happen again. This has been a memorable event.
Falls Creek now confirms it is snowing therrrr.
Just checked out the lodge camera in Davenport, Hotham - very wet flakes falling down.
Feel sorry for those who've lost their properties. But not sorry enough to want to subsidise a land reclaimation excercise to prop up the values of these properties.
Absolutely agree, those waterfront Collaroy properties are a poisoned chalice.
A dusting settling at Cedarwood at Falls
All this rain and resulting chaos everywhere and what do I get at Tumbarumba ? 62.2mm , thats all. Got fairly cold late this arvo with decent clouds rolling over now.
That'd be almost a month's worth, right? Not too bad, and without the associated flooding.
I never said the video was fake only the photo, so you believe waves were breaking over North Narrabeen Surf Club.
If you need to undertake major rock revetment works to protect Pittwater Road, why not protect the properties as well?
Same cost, less legal angst.
I see your point. But when the public bail out private landholders for their own poor decisions then you just encourage stupidity.
They did it on the Gold Coast 40km of rock walls under that sand.
A decent drop I guess. However my dams are recovering from the poor last 18 months and as a 100% grazier more would have been appreciated. Local croppers are wanting it to stop now , some poor sods never got seeded up so are really in the poo right now. Rain came about 7 to 10 days too early for them.
I figure it just gives the infrastructure we care about (road, power, sewer, telecoms) another 20m of protection.
If you build a rock wall in front of the properties the beach in front disappears permanently. It's because the waves in big seas hit the rock wall and reflect, carrying sand out so far most does not return.
So it's ugly wall to save millionaires their properties and no beach, or no wall, no house but you keep the beach.
They put rocks in front of the Collaroy homes and it bought another 42 years, of generally increasing beachfront.
I'd expect a well designed and installed revetment to last even longer.
Costs a metric ****tonne though.
cheaper to knock down houses and plant heaps of vegetation?
Nah never happened...
Phil Franks springs to mind. His rocks didn't work this weekend.
It's starting to look very promising IMO.
Demo is expensive.
What would the vegetation do? Just blocks the views of the surf, same as the bloody houses...
Sink piers, build revetment, minimise rebuilds.
If you look at aerial pics of Collaroy you'll see a nick in the beach after big seas where the rock wall is. It's just a few spots so the effect of the walls are not permanent, but if they build a decent length of wall the beach will be lost.
I did an MSc with some coastal geography.
Anyway, snowing still at Perisher and that's far more important!
I dunno Phil,
but looking at the pics a heap of places were protected to some extent by the rocks placed there post-1974.
They aren't done the way one would design it now for a long-term solution but it's hard to say they didn't help write a bit. 40 odd years is a few family lives at a home.
I did a BSc in hons, all in geography. Look at the pics... it's not a forever solution but it's managed solution. I've been slightly involved (folks in my office) with some reasonably major revetments that are a big step up from the 'dump a lot of basalt rocks and wait' scenario. They can design em pretty good. Will have to see how they went over the weekend. Protecting infrastructure is expensive, houses or no. Pittwater Road is a major traffic, PT, power, telecom and sewer route. Worth protecting.
Concrete wall at 1:12 in the above video seems to have worked best.......
Seriously think those properties are a lost cause. Why throw good money after bad. Its just a matter of time. best to invest in protecting infrastructure ie roads etc. Pittwater rd is more valuable than properties that are fighting a long lost battle. Might give Pittwater rd an extra 20 years. Who in all reality, would buy those properties in collaroy? Its sad for the current land owners, but does anyone really expect Warringah council to invest in saving those properties? they might think about saving the infrastructure. then again, what council (considering amalgamation) would throw money at it when none in the past has really bothered?
Just letting the houses fall apart won't save Pittwater Road.
Active protection will.
Why not protect properties as well, or at least some of them?
Can't imagine the cost differential is too far apart.
Anyway, food for thought.
Sea level is only on the way up, events like this are only going to become worse for the beachside properties.
Sets costly precedents, hard engineering often refers problems elsewhere continuing the cycle of re-active 'patch' up works.
Natural systems are generally going to provide much longer term, cost effective solutions. But in heavily built coastal areas....
Many of Sydney's ocean beaches are semi-enclosed sediment cells, with high levels of social significance and the affluence to achieve it, you would expect a decent combination of hard and soft solutions would do the best job in protecting key areas longer term.
My partner is completing her pHD in this very topic. Damage to the built environment greatly excites me, and I love nothing better than rebuilding natural systems, the legal side bores me bollockless.
Trevallyn Dam (on the South Esk in Tassie) has risen an astounding 9.5m in the last 24 hours!! Already spilling 2.5m over the wall.
Now I know it's a small run of the river impoundment, with a big river flowing into it, but that is still impressive. And the South Esk with it's low gradient in the upper catchment, tends to have a delayed flood response when compared to other Tassie rivers, ominously it looks like the bulk of the water still fairly high up in the system at present.
I wonder if there is a few ex-hydro engineers double guessing how much strain their concrete masterpiece can actually take?
Wow how is any of the above relevant to wx obs in the date range?!?
5mm in the gauge overnight for Perisher with margin temps. 2-3cm possible up high in seems.
Tend to agree. It looks like a "this is what will happen in 30 years time if we don't do something about climate change" comparison. Happy to be proved wrong.
Hey, I didn't say it was easy!
But it's all getting poo-pooed and all I can look and think is.... if not for the post 1974 work we wouldn't have to worry about the houses at all because they'd be in the sea. Just because these are expensive properties doesn't make it not a social problem!!
You partner doing their work under Short? I nearly went back and looked at doing something under him many years ago.
Cams looking better than yesterday!
I remember that north narrabeen comparison photo from a few years back
It was in the manly daily, it was a terrible photoshop at the time too
I found a link to a coastal watch article that used it in 2010
even Racecourse at Selwyn is being hit now....
snowing heavily in Perisher from looking at the mountainwatch cams.
BOM Victoria @BOM_Vic 1m1 minute ago
Rapid rises in the Snowy may lead to major flooding, be safe and stay away from floodwater: http://www.bom.gov.au/cgi-bin/wrap_fwo.pl?IDV36120.html…
I observe the v8 at Perisher having a test run on live cam and still snowing! Woohoo
Showers hitting just at Calder Park. Heading NE.
probably a good thing to flush out the lower reaches of the Snowy a bit.