How many of you were aware of the 7.6 kilometres of concrete barrages that maintained Lake Alexandrina as an artificial elevated fresh water system by keeping out the sea water thus destroying Australia’s largest barrier island estuary ? Just remember the Coorong once flowed into Lake Alexandrina from the south prior to the construction of the barrages in 1940 after which the flows were directed straight to the Murray Mouth, these flows have now been reversed with the collapse of the south east unconfined aquifer and this is why the Coorong has been dying and the Murray Mouth now requires frequent dredging. The lie about the natural state of these systems was the reason for the 2007 Water Act and 2012 Murray Darling Basin plan.