Why doesn't Australia rely on groundwater as much as California?

The world's largest underwater ground aquifer is in the eastern half of Australia. California drills up to one mile into the ground for water. Why doesn't Australia do the same? Why doesn't Australia have a large agricultural sector like California? Why isn't Australia's population higher than... show more The world's largest underwater ground aquifer is in the eastern half of Australia. California drills up to one mile into the ground for water. Why doesn't Australia do the same? Why doesn't Australia have a large agricultural sector like California? Why isn't Australia's population higher than California's?
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