tim31 wrote:
Just so I know what to say when I pitch this to my local member, what are some possibilities to replace the cotton and rice growing industries so as to maintain that slice of the economy they represent?
They could choose to grow practically any other crop, just like they do now when there's less rain than usual. I remember some Queensland farmers were complaining last year because they had to grow sorghum instead of rice, the poor diddums. I showed the article to my family and we all laughed at their pain and hoped they would all jump in a lake.
One other thing that could help the Murray Darling is upgrading to modern irrigation methods (I'm looking at
YOU Victoria). There's a stupid situation where South Australia leads the world in irrigation technology, and Victoria still uses the same techniques that they used in ancient Egypt (open channels - in an area that regularly gets temperatures in excess of 40 degrees). The Victorian State government is also the one that's blocking any attempt to nationalise the river system. South Australians hate Victorians so much.
Not that SA isn't doing stupid stuff either. We have permanent plantings (which have to be watered all year round) in an area that would be a desert if it weren't for the river, though in SA's defence, that's because the constitution guarantees us a fixed amount of Murray flow every year, which shows that some people, at least, were thinking about the water problem over a century ago. Most of SA's water allocation actually goes into keeping the Lower Murray Lakes fresh water, though, so that a few farmers near the Coorong can get water. That's in the process of changing, however, because the water level in the lakes has receded to below the level of the pump. That means that the government can cut them off and say "see? not our fault - nature did it."
As for urban use, we don't even have to recycle waste water in order to provide for everyone. In a normal year, enough rain falls on Adelaide, the driest capital, to support 2 million people. We know we can collect it, because we already do collect some and use it in Salisbury (a suburb). We also know that Salisbury water tastes better than regular Adelaide water. We also know from Salisbury that collecting the rainwater would be a lot cheaper than a desalinisation plant. I have no idea why the state government isn't pushing the idea of stormwater reclamation more, except for desal being the word that all the cool kids use at the moment.