Flows of 180 gigalitres per day are possible, though unlikely, the Department of Environment and Water projected on Tuesday afternoon just weeks after indicating 135GL was the expected peak.
The flooding will still be a long way short of an estimated 340 GL a day that drove the highest flood on record in 1956, although local folklore suggests that before records were kept even higher flooding events used to occur.
DEW estimates are that there is a moderate probability of 165GL/day, and a low probability of 180GL/day peaking in December.
Premier Peter Malinauskas visited Renmark on Tuesday to oversee flood levy preparation after the long calls from the Renmark Paringa Council for funding assistance to improve their flood defence were at last heeded prior to the flood event. The Premier said in Renmark:
"These new flow predictions are a concern for river communities and people need to be prepared for increasing rises in river levels.
"I urge people to keep informed through the SES website so they can prepare and give themselves the best possible chance to get through this difficult period."
Emergency warnings eased in Victoria and New South Wales on Wednesday after serious flooding in the communities of Forbes, Echuca and Wagga Wagga. Downstream on the River Murray, the north west Victorian city of Mildura was preparing for flooding from saturated upstream tributaries anticipating flood levels similar to the 1974 flood event.
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