Eastern Victoria and southern NSW are bracing for further downpours after some areas recorded more than 150mm of rain in a day.
Kameruka Estate near Bega copped 200mm in 24 hours to Thursday evening, while Mallacoota over the Victorian border - where a landslide earlier cut off the town - registered 112mm.
The Bureau of Meteorology warns a low pressure system will begin moving inland but rain will continue to fall on waterlogged areas throughout Friday and into the weekend.
Floodwater blocked a road and covered paddocks in Heyfield, Victoria. (Diego Fedele/AAP PHOTOS)
The big wet is expected to hit soaked parts of Victoria for the next day or two, with some areas of the state's east likey to record falls of 200mm.
Several flood warnings are in place in Victoria, with major alerts for the Thomson River, the Genoa River, the Buchan River, the Macalister River and the Bemm River.
The Bemm River is expected to peak by Friday afternoon and if it floods, access to the community will be cut, the SES said.
Moderate flood warnings are in place for the Cann River and Snowy River downstream of McKillops Bridge.
A severe weather warning was in effect for heavy rain and damaging winds for parts of East Gippsland, as well as the northeast, west and South Gippsland forecast districts as of Thursday.
Several advice-level flood warnings were in place for NSW, with some southeastern parts of the state expected to record up to 300mm of rain by the end of Friday.
A severe weather warning for heavy rainfall for people in parts of the south coast and Snowy Mountains remained in place on Thursday night before conditions were expected to ease.
The bureau warned flooding could persist after rain subsided in NSW and Victoria.
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