MDBA acting chief executive Andrew Reynolds said releases would be stepped up ahead of what was expected to be a sustained wet-weather event spanning several days from Wednesday.
"These airspace releases are expected to remain in-channel over the weekend; however, this is subject to change, as information about this weather system improves and our river operators make adjustments accordingly," Mr Reynolds said.
Above-average rainfall is expected in the upper Murray catchment in late September and October and there is an increased chance of flooding, particularly on the floodplains between Hume Dam and Yarrawonga Weir.
The MDBA is working closely with the Bureau of Meteorology, Water NSW and the NSW and Victorian State Emergency Services to provide flood preparedness safety messages.
Mr Reynolds said the basin authority's aim was to share important information with people who either lived, worked or holidayed on a floodplain.
"There are some things people need to know about when it comes to being prepared for potential floods," Mr Reynolds said.
"There are three things you can do to be prepared.
"The first is to develop your personalised flood emergency plan for your home and property by going to the State Emergency Service website for your state."
The site details are www.ses.nsw.gov.au and www.ses.vic.gov.au/plan-and-stay-safe
"People should also sign up, or check their details are up to date, for Water NSW’s Early Warning Network to be notified by SMS, email or landline about dam and supply activities during periods of flooding or high releases."
You can achieve this at www.waternsw.com.au/supply/ewn
"And, finally, check the Bureau of Meteorology to receive the latest weather information including warnings, river conditions and rainfall in your area," Mr Reynolds said.
Those details are www.bom.gov.au/australia/warnings and www.bom.gov.au/australia/flood
Hume Dam’s primary purpose is water security — it plays a crucial role in managing flows and securing water along the Murray River, including to Adelaide.
The MDBA needs to fill Hume Dam before irrigation demands start to exceed inflows, and the level starts to drop. This ensures water allocations are maximised.
The MDBA operates the Hume Dam in accordance with the rules set by state governments.
When the dam fills, all flood waters will pass through the dam and head downstream along with the water entering from the tributaries such as the Kiewa River.
The Bureau of Meteorology is responsible for issuing flood warnings to the public.
