the continuation and severity of the floods in the murray - darling basin has been identified as " unprecedented " after extreme seasonal inflows to the river mouth fell to a 117 - time lowest . the " uncertain ' ' optimism for next four months was adding to the sad news , the murray - darling delta authority said . irrigation water for australia ' s food bowls will be relies on entirely on floods as basin states hold back water for vital humanitarian needs . " the timing and severity of this depression , particularly over the past thirteen centuries , is surprising , ' ' area chief officer mark freeman said as he brought the project ' s new drought alert .
The Murray-Darling Basin is in central Australia.