Gippsland and Yarra Ranges have been affected by rising flood levels overnight, and people in the Traralgon area are subject to an evacuation order.
Emergency services are inspecting the damage, having forecast increasing flood levels on the Yarra River in Yarra Glen, the Thomson River near Sale, and Traralgon Creek near Traralgon.
Anyone living, working or vacationing in the Traralgon Creek area was ordered to evacuate before dark Friday.
Major flooding is possible in the city of Traralgon beginning Saturday afternoon, with the creek expected to reach the “moderate” flood level of 4 meters by mid-morning.
Some 300 buildings in the area have already been affected by the floods and 14 roads have been closed.
Moderate flooding is also occurring along the Thomson River near Sale and Wandocka.
River levels are falling, but increases are likely to resume with more rain forecast for the basin on Saturday.
Sections of the South Gippsland Highway are now closed due to flooding.
Residents along the Yarra River from Millgrove to Coldstream are advised to evacuate if necessary.
The Yarra River in Yarra Glen peaked overnight at moderate flood levels, but the river is still rising in Christmas Hills and Warrandyte.
Victoria has been relentlessly battered by gusts of wind and heavy rain since Wednesday night and two people have died in the dangerous conditions.
A young woman was found in a vehicle amid flooding in Glenfyne, 200 kilometers southwest of Melbourne, on Friday, and the body of a man was found in his submerged car in the Gippsland town of Woodside on Thursday.
SES Victoria has received more than 7,400 requests for assistance, with about 5,800 related to fallen trees.
Victoria SES CEO Tim Wiebusch said that as of mid-afternoon on Friday, more than 100,000 homes were still without power and 100 roads were closed, particularly through the Dandenong Ranges.
A strong wind warning was also issued on Friday for Lakes Gippsland and the east and central shores of Gippsland.
Those already in safety in Gippsland are urged to stay there for the next 24 to 48 hours, when most of the flooding is expected to pass.
Authorities are asking locals not to drive through the floods.