DOZENS of houses remain isolated and thousands of properties have been severely affected by current flooding, with the Murray River yet to reach its peak.

The river level is now forecast to reach maximum height on Wednesday, slightly below the devastating 1975 floods, but with similar impact, however the damage and clean-up bill to the community may not be known for months until floodwaters recede.

Senior Western Region members of Victoria Police flew over the vast floods across Sunraysia this week, raising concerns about the region's future recovery and lingering "hidden" community impacts.

Western Region Assistant Commissioner Michael Grainger said the aerial view of the crisis was "absolutely remarkable" and allowed he and Western Region Commander Sharon McKinnon to gain a strategic awareness of the magnitude of the floods.

"It was really important for us to see; it's very difficult to image the breadth and extent of it when you are looking at it in the paper or on the TV," Mr Grainger said.

"It was about building situational awareness and getting a sense of the challenges ahead for the community ... and thinking about how we might support that at a state level, if not regional level."

Mr Grainger said that while the role of Victoria Police during the flood was to support control agency the State Emergency Service, as well as having strong responsibilities around community leadership and community safety, the impact the water would have on local roads was an "underlying concern".

"There are about 500 roads closed across the region at the moment ... and while not our bailiwick so much, it's our role to make sure that people aren't breaching those road closures," he said.

"We get a strong sense that the community has been very compliant with that at the moment, but for us the underlying concern is the impact that the water will have on roads and what that means longer term for heavy transport and access for the community."

However, Mr Grainger said the social implications of the floods, following two years of COVID restrictions, was also concerning.

"Police in the border towns, particularly, committed to those road blocks that we had in place for some time. That was not where we wanted to be, but that's where we were in terms of managing movement within the community.

"That had an impact on the community and our people, so across the whole community people are a bit weary of the natural events that we are experiencing and that's as true for police as anyone else.

"These social impacts, we have a sense of, but we can't truly foresee what those impacts will be.

"Some of it will play out in family violence and road trauma and violent crime and alcohol and drug abuse.

"I'm sure some statistics will point to it, but I'm confident there is a hidden impact across the entire community.

"What we are looking at today, this community – particularly if their livelihood is affected, if their properties are inundated – these things have long, long-term effects."

Commander McKinnon said additional resources deployed to Sunraysia would remain "as long as they are needed".

"One thing that we are really, really mindful of is the remoteness of the community up here and ... this has been going on for such a prolonged period," she said.

"The fatigue can impact anyone living in the community so it's really important for us to continue to support the local police who are supporting the community.

"As long as it is needed, we will continue to support them."

The police said some decisions had already been made about on how to resource the ongoing policing effort.

Mildura police Superintendent John O'Connor said the high waters were expected to remain throughout the region "for a long period of time" and cross-border agencies were working collectively to minimise the impact.

"Everyone here is in for the long haul," he said.

"We understand it is going to be a very long time before the flood actually leaves us after peaking next week, and after it starts to go down we are going to have high water for a long period of time.

"We are working together and using our joint resources to continue to make the community safe."