Floods and Landslides-like New Zealand now?
Ok so there is no risk here at the moment,... but when it does rain ( We live in the wettest part of Victoria with over 15 million litres to be "bottled" off some of our hectares each year ) What's at risk ? How likely is it we could get what's happening in New Zealand at the moment ?
Houses moving and falling over?
Where? Shallow slides in soil and road fill are common in wet periods . Big slides are possible, especially around Apollo bay, but not always easily predicted . The best examples being the slide in 1952 that created Lake Elizabeth ( great new walk there with platypuses and all) ., one large one on Halls ridge in the 1990's and the slide which damned Wye river several hundred years ago .
When ?
October is when things are wettest, but high saturation of soils is common in August through to November. Along the coast risk of high 24hr rainfall totals is possible throughout the year due particularly to easterly influences. more info mreforce@ telstra.com
Why? Even though we live in the biggest landslide risk area in Australia ,our land forms are much older and generally more stable. But that doesn't mean complacency in the Otways and Heytsbury areas. There after all some big old slides that are still just sitting on the sides of hills waiting for that very wet period to move them along a bit.
As for flooding damage , there is one house featured in the paper this week , that is in a gorge - likely to go sometime in the next few decades.
Houses moving and falling over?
Where? Shallow slides in soil and road fill are common in wet periods . Big slides are possible, especially around Apollo bay, but not always easily predicted . The best examples being the slide in 1952 that created Lake Elizabeth ( great new walk there with platypuses and all) ., one large one on Halls ridge in the 1990's and the slide which damned Wye river several hundred years ago .
When ?
October is when things are wettest, but high saturation of soils is common in August through to November. Along the coast risk of high 24hr rainfall totals is possible throughout the year due particularly to easterly influences. more info mreforce@ telstra.com
Why? Even though we live in the biggest landslide risk area in Australia ,our land forms are much older and generally more stable. But that doesn't mean complacency in the Otways and Heytsbury areas. There after all some big old slides that are still just sitting on the sides of hills waiting for that very wet period to move them along a bit.
As for flooding damage , there is one house featured in the paper this week , that is in a gorge - likely to go sometime in the next few decades.
posted by Malleebull at 6:06 AM
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