Meanwhile, additional cracks have shown up at the Yallourn coal mine, with fears remaining that swollen nearby rivers could flood the site.

More than 25,000 Victorian homes remain without power on Monday, down from 300,000 immediately after Wednesday's heavy storms.

Most will have power back on by week's end, authorities say.

Emergency Management Commissioner Andrew Crisp confirmed 98 homes to date have been deemed uninhabitable, with 84 significantly damaged.

Of the nearly 9000 requests for assistance amid the floods, most due to trees falling or building damage, less than 100 call-outs are outstanding.

But Mr Crisp told reporters that rain would return to the Latrobe Valley from Wednesday and continue at varying intensities through the weekend.

This could cause major issues for flood-affected communities and prompt the upgrading of flooding at numerous rivers, including the Latrobe River.

Moderate flooding is currently occurring along the Latrobe north of Traralgon.

"Given we've already got extremely saturated ground and flooding in particular areas, there's a very real chance we'll move from minor to moderate and in some areas from moderate to major flooding," Mr Crisp said.

Energy Minister Lily D'Ambrosio said the mine fuelling Yallourn power station, currently evacuated, could be flooded in a worst-case scenario.

She said more cracks had appeared in the mine overnight near the Morwell river diversion and operators Energy Australia were seeking to relieve the water pressure, including by diverting water from the river.

"All those workers have been evacuated and will remain evacuated until there's confidence the area is safe to work on," Ms D'Ambrosio told reporters.

She said there were no current Victorian electricity supply concerns.

Mr Crisp said a number of different agencies were continuing to work together to clear roads and fix damaged poles and transformers.

Victoria has been lashed by gusty winds of up to 125km/h and heavy rainfall since Wednesday night, and two people have died in the dangerous conditions.

A young woman was on Friday found in a vehicle in floodwaters at Glenfyne, 200km southwest of Melbourne, and a man's body was found in his submerged car at the Gippsland town of Woodside on Thursday.

Two State Emergency Service volunteers were hospitalised during recovery works, with one suffering a broken shoulder blade and the other a broken wrist.

Emergency assistance funded by the Commonwealth and state government assists those with damaged properties with grants of up to $42,250.

Australian Associated Press