the persistence and severity of the drought in the mid - darling basin has been describe as " unprecedented " after most year inflows to the dam system slipped to a 117 - year low . the " bleak ' ' weather for this six months was adding to the ill stories , the dir - darling rivers authority says . irrigation water for australia ' s rain system will be rely almost entirely on rainfall as basin states hold back water for critical medical demands . " the persistence and patience of this drought , especially over the past three months , is extraordinary , ' ' power secretary executive rob freeman told as he delivered the district ' s new flooding update .
The Murray-Darling Basin is in central Australia.