Recall that the latest Intergenerational Report (IGR) from the Australian Treasury predicts that Australia’s population will grow by 13.1 million people (~ 50%) over the next 40 years to reach 38.8 million people. It’s the equivalent of adding another Sydney, Melbourne and Brisbane to Australia’s existing population.
In addition, 74% of this growth will come directly from net overseas migration (NOM), which is expected to increase to 235,000 per year from 2025-2026 against 215,000 per year in the 2015 IGR:
However, in making these heroic assumptions, the IGR also warned that Australian immigration must be at a level that is “At or below capacity” cities or regions of destination to absorb them, and requires “Careful planning by all levels of government”:
The economic and social pressures and capacity constraints that result from an influx of migrants also need to be carefully managed. Migration must be maintained at or below the capacity of the city or region of destination to absorb new migrants, taking into account the impacts on the populations in place …
It requires transparency, consistent decision-making and careful planning on the part of all levels of government.
Against this background, it is disturbing to read that the Murray-Darlin Basin, which produces nearly 40% of Australia’s food supply, is desperately lacking in water – a situation expected to worsen with climate change:
Climate change since the 1990s has dramatically reduced the amount of water available in the southern part of the Murray-Darling Basin, new research shows.
According to the Sydney University of Technology, the height of the Murrumbidgee River has dropped by about 30% during the growing season from April to May.
Report author Milton Speer said there were about 300 million liters less water flowing past the regional town of Wagga Wagga every day …
Dr Speer said changes would be needed as there was less water available to share.
âThe viability of the basin is at stakeâ¦
âContinued drying and warming in Australia will result in an even greater drop in water availability, further inflicting suffering on communities, irrigation companies, animals and the environment. “
“There will be less and less water, and tough decisions will have to be made, and that probably means less water for irrigation and agriculture.”
The âBig Australiaâ mass immigration policy guarantees chronic water shortages.
The additional 13.1 million people predicted by the IGR will massively increase the demand for water at the same time as the supply is reduced due to the decrease in precipitation and increased evapotranspiration rates due to climate change.
So the best thing our policymakers could do to protect the country’s water supply is to ensure that immigration does not return to its pre-COVID manic level, nor is it elevated to the insane levels (235,000 annually) projected by the IGR.