Wednesday, June 27, 2007

Another Big Flood?



Almost a decade after The Big Flood, floods hit East Gippsland again.


I've been listening the reports and interviews with SES personnel for the last few days,
I undertook my first ever extensive research project in part of East Gippsland - and my focus happened to be "The Big Flood" of 1998.

In late June 1998, the Shire of East Gippsland (which lies in the far east of the state of Victoria, Australia) was declared to be in a State of Emergency following a one-in-100 year flood event. Media coverage of the “flood mayhem” ( "Flood mayhem: Gippsland braced for worst in 40 years". Herald Sun. Melbourne Wednesday June 24) tended to blame the “natural disaster” on “a record flood on top of a…drought” ("Natural disaster and a loss of hope". The Age. Melbourne Friday 3 July).

During the course of my research, I found that a historical analysis of the conditions creating and shaping vulnerability reveals that the disaster was not the result of an unusual coincidence of abnormal events in nature, but entirely foreseeable. While torrential rain may have provided the trigger for a ‘1-in-100 year flood’, the disaster that resulted was shaped by underlying conditions and processes which had existed for well over a century. These include the physiographic features that characterise much of East Gippsland, such as the harsh climatic conditions, steep terrain and poor soils, and characteristics of local economic and social activity, including limited access to transport, restricted access to markets, a small economic base, and depopulation. What a historical analysis reveals, however, is that at the core of flood disasters in the region, there has always been the coincidence of and interaction between drought, low commodity prices, and poor land management practices. This observation is articulated by A. M. Pearson in his book, Echoes from the Mountains, and has also been noted by local Landcare groups (Gippsland Community Reference Group, 1993, 20).

A historical analysis also revealed that while the biophysical, economic and social environment has always limited the ability of many of East Gippsland's residents to respond to further shocks, many of the conditions affecting vulnerability were heightened by changes occurring since the 1970s and accelerating during the 1990s. Factors that stood out included impact of economic liberalisation on farmers, the discovery of Ovine Johnes' Disease in the area, drought, and low commodity prices - the latter two of which contributed to overstocking, over-grazing, the growth of rabbit populations, and the difficult of feeding families let alone looking after fences and pastures. By the time rain fell in June 1998, a situation of extreme vulnerability had arisen.

Flood disasters are so often blamed on "chance" and "unusual weather events", yet the floods of 2007 have arisen as they did in 1998, 1990, and many times before that...a severe weather event with an intense low pressure system built across the east-coast of Victoria, moved back in on itself and dumped rain on areas suffering from drought. Snows have fallen in alpine areas, and the great rivers of East Gippsland have flooded. Residents of East Gippsland are familiar with flooding...in many areas, rivers flood every spring, and every 2-3 years, a particularly heavy fall of rain will cause flooding that results in erosion, and fence and pasture damage. The difference between a severe weather event and a "disaster" is the extent to which social, political, economic and pre-existing environmental pressures interact to structure and compound the impacts of the severe weather event.

The statistics this year indicate that this weather could surpass that of 1998. Some parts of East Gippsland are already experiencing more severe floods than they did in 1998. At present the damage appears to be far less severe than it was in 1998, and the floods are certainly not being called "a disaster", but it remains to be seen whether this will be the case, and if so, why. Many of the residents of East Gippsland have already experienced bushfires in 2003 and 2007, and damage caused by fire will, in some instances, have compounded the ongoing economic (and social) vulnerability arising from the ongoing drought, as well as pre-existing sources of vulnerability mentioned above. In addition, the effect of bushfire on the landscape exacerbates flooding in numerous complex ways (not least of which is obviously the denundation of land caused by fire).

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