Malinauskas said on Monday that Treasury is putting the “finishing touches” on a financial support package for River Murray communities ahead of an announcement in the Riverland today.

He also said the state government was in “active discussions” with the federal government on a financial recovery package.

The Riverland and communities further downstream around Mannum are preparing for River Murray flows of 175GL a day across the border in early December – predicted to inundate 3500 to 4000 properties.

The flood peak, declared a major emergency on Monday, still has a “moderate likelihood” of reaching 200GL a day and a “low likelihood” of 220GL. The prospect of a second flow peak in late December was also revealed yesterday.

The state government will today appoint a local recovery coordinator to manage the local response.

“The entirety of the cabinet will be on the ground in the Riverland,” Malinauskas told reporters on Monday.

“I decided to make arrangements for that last week given the expanding scope of the event and of course the fact that multiple government agencies now have a degree of responsibility across a suite of areas regarding this emergency response, but also the impact on Riverland communities more broadly.”

Police commissioner Grant Stevens – who has new powers under the major emergency decleration to direct resources, evacuate communities and cut off utilities – is also travelling to the Riverland today.

Malinauskas said this financial support package would be a “first step”.

“It won’t necessarily be the last iteration of the support package. We stand ready to provide support where we reasonably can as new information comes to hand,” he said on Monday.

“In the context of normal major emergencies, this is a slow-moving event and we’ll have to respond to it as we receive more information.

“If there are tourism operators that are hit for one month that is one thing, but if they are hit for a four-month exercise that’s a different thing again.

“We don’t know what that looks like yet because it will evolve over time and the modelling will change.”

The next flow modelling update is expected on Thursday.

Malinauskas is due to meet with councils in the Murray today to inspect flood protections across the Riverland and Mannum.

Almost eight kilometres of flood barriers and 1.5 million sandbags have been secured to help protect flood-affected River Murray communities.

A resupply of 200,000 sandbags is expected on November 24, and further deliveries of 25,000 will also be received that day with an additional 168,000 to be delivered later in the month via road freight.

The state government said it has committed $4.8 million for flood defence resources including more than $3 million for levee bank restoration works.

“We’re not now just looking at restoring existing levees, we’re also looking at building brand new ones as well,” Malinauskas said.

“Which means more money, which the state government is ready to contribute towards if not fund exclusively.

“We’ll have more detail around that at the package we announce on [Tuesday].”