Tag Archives: flood

Floods in Brisbane and Brazil

The near simultaneous floods in Brazil and Brisbane provide a contrast in terms of their impact (and media coverage).  Brisbane is experiencing huge property damage, but relatively little loss of life – while Brazil is experiencing large loss of life, without as much property damage.

In Brazil experienced much smaller area flooded, but due to the rapidity, terrain and vulnerability of people much more death.  Recent reports state the death toll exceeds 500 people, making it Brazil’s most deadly natural disaster (see also BBC). The Christian Science Monitor writes:

Less than a year ago, just a few miles from where this week’s devastation occurred, 160 people died when houses built on top a hillside garbage dump gave way. Another 250 were killed by mudslides in other parts of the state.

In São Paulo, the two rivers that ring the city routinely burst their banks causing traffic chaos and some neighborhoods spent several weeks under water last year.

Government officials vowed they would review the current procedures that ensure much more money is spent on cleaning up disasters rather than stopping them from happening, with leading Civil Defense official Humberto Vianna telling the government news agency: “[Our] logic needs to be inverted. We are going to prioritize prevention.”

Meanwhile, in Brisbane Dan Hill from architecture and urbanism blog city of sound writes about a long reflection filled post about details and feeling of the flood:

Part of all this is just Queensland. It comes with the territory, as they say. Comes with the terrain might be a better way of putting it, as Brisbane is basically built in a flood plain. You can’t help but consider the folly of building Australia’s third largest city in a flood plain, but then Melbourne is built on a big old swamp too, so that’s two of them. And Sydney will hardly be immune to rising sea levels.Brisbane is characterised, like perhaps no other city on earth, by a particular kind of domestic architecture: the Queenslander. This is typically a wooden house with a pitched tin roof overhanging a wrap-around veranda, a cruciform internal layout to enable air flow, and elevated high on stilts to catch the breeze and avoid the bugs. Designed to create good air flows under and through the building, and originally enable people to sleep outside, you see them everywhere across the city. It’s uniquely identified with the city. Over time, they’ve become both coveted and replaced, with good examples being preserved and becoming expensive, and yet many demolished in favour of new builds done in the cheaper ‘slab on ground’ model of building, which is the easiest way of doing it. But guess which is most appropriate for these conditions? Those wooden houses on stilts are often sitting pretty above the rising water at the moment.

There will be much finger-pointing after this, from insurance companies refusing to pay up due to the releases from dams not technically being floods (what on earth else are they then?); from those who point out that, as memory of the ’74 floods faded, developers were allowed to build in flood plains earmarked for further dams; from those pointing out that the floods are a result of climate change (even if these ones aren’t, future ones will be); from those pointing out that the entire fragile mode of suburban development of Australian cities is particularly unsuited to the resilience required of the near-future; that development should not have been allowed on the riversides and basins of floodplains, and so on.

There will be a time for discussing how to achieve more resilient patterns of settlement in Australia. I’m not at all convinced that Australians have the appetite for genuinely addressing this, even despite the floods. Most people are apparently incapable of thinking about the future on the scale required for investment in things like urban resilience, even accepting we need to get better at communicating all this. I’m not sure people see the connection between devastating flooding and a culture where property developers call the shots, where cost drives aspiration in building and infrastructure, and where a car-based fabric of dispersed tarmac’ed low-density communities is virtually the Australian dream. But if it’s not events like this, I’m not sure what else it would take to make this clear and force the issue.

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Flooding in Pakistan from the ground and from space

An aerial view of floodwater covering the land as far as the eye can see, around Taunsa near Multan, Pakistan, Sunday, Aug. 1, 2010. (AP Photo/Khalid Tanveer)

A boy sits on a bed as his family members salvage belongings from their destroyed house in Pabbi, Pakistan on August 5, 2010. (REUTERS/Faisal Mahmood)

From the Big Picture photoblog from the Boston Globe Severe flooding in Pakistan and  Continuing Pakistani floods.  Also National Geographic.

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured these images of the Indus River around the city of Jacobabad. Acquired August 18, 2009

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured these images of the Indus River around the city of Jacobabad. Acquired August 17, 2010

Views from space of Flooding in Pakistan from NASA EOS.

A Pakistans flood FAQ

Kate Larkin writes Pakistan’s floods: is the worst still to come? in Nature News

What is the main cause of the intense rainfall?

It is weather, not climate change, that is to blame, according to meteorologists. An unusual jet stream in the upper atmosphere from the north is intensifying rainfall in an area that is already in the midst of the summer monsoon (see animation showing the growing extent of the flood waters). “What sets this year apart from others is the intensity and localisation of the rainfall,” says Ramesh Kumar, a meteorologist at the National Institute of Oceanography, Goa, India. “Four months of rainfall has fallen in just a couple of days.”

Has human activity exacerbated the flooding?

Yes. The high population growth rate in Pakistan has contributed to a rapid deterioration of the country’s natural environment. This includes extensive deforestation and the building of dams for irrigation and power generation across tributaries of the Indus river. Years of political unrest have also left their mark, and flood waters are transporting land mines, posing an extra danger to the relief mission.

Is the humanitarian crisis larger than the 2004 Asian tsunami, as some media reports have claimed?

Not in terms of the death toll. With 1,600 people reported dead, this remains 100 times less than the 2004 Indian ocean tsunami. However, the scale of the tragedy continues to increase, with around 14 million people in immediate need of emergency aid. Many of Pakistan’s bridges and roads have been destroyed, and severe weather is grounding helicopters, slowing relief efforts.

On 11 August the UN and its partners launched an appeal for aid, and the World Bank has announced a grant of $900 million for relief and reconstruction.

What about disease?

The harsh reality is that waterborne diseases are linked to floods — and with cholera outbreaks reported in the northern Khyber Pakhtunkhwa province of Pakistan, this flooding event seems to be no exception. The fear is that a lack of sanitation will see the fatal diarrhoeal disease spreading. And stagnant water may pose other threats. “The Pakistan floods and stagnant waters may also cause an increase in malarial cases,” says Sandy Cairncross, public health engineer at the London School of Hygiene & Tropical Medicine.