Grendel wrote on Nov 22
nd, 2008 at 8:52am:
I thought you agreed that bad water management and usage as well as drought (which is a natural occurance in Australia) were the main factors in the problem. Well that is my assessment of the situation and has been for years.
We have water management problems in Australia. We have usage issues that should be regulated by government properly. We have growing salinity problems also associated with these issues. We have very little to no technological and infrastructure intervention in dealing with these problems.
We don't... because all levels of government are bereft of ideas and look only to the next election and keeping the political status quo.
Put it this way. Australia is the driest continent on Earth, but we could easily reduce water consumption. We proved that in Brisbane in the last 18 months by reducing water consumption by half. For one thing we could save an enormous amount if we didn't flush our poo down the toilet with 7- 15 litres of the best potable water in the world every single time.
Water resources issues are mainly due to mismanagement and the pressures of increasing population, although the latest round of regional predictions show that in the future, things are not going to get any better as a result of climate change. I'll let you read the IPCC regional predictions (which are worth reading), but generally the wet climates will become wetter and the dry climates will become drier.
As far as climate change is concerned, the main global consequences are yet to occur. India right now is self sufficient in food - so is China, but if the global temperatures increase by 2 degrees, that translates to about a 25- 35% drop in rice production alone. The water from the melting glaciers in the Himalayas feeds 5 major rivers in Asia, and right now, China is installing dams and pipelines. As the glaciers continue to melt, you can bet your bottom dollar that military conflicts will arise as a result of dwindling water resources. China with a population of 1.5 billion will look to the increasingly viable and unpopulated agricultural lands of Siberia (which they don't own) as temperatures increase.
- but that's for the future. Let's not confuse that with the mess we've gotten into due to lack of planning and management. Maybe if we can start to use water resources better now, it will help us in the future.