UPDATE: A floodwater levee in danger of collapse in Wangaratta, in Victoria's northeast, is being reinforced to prevent water flooding the city.
As Victoria enters the seventh day of the flood emergency, the suspect levee bank in Wilson Road, Wangaratta, is holding back floodwater that is threatening about 60 homes.
Excavation work to strengthen the leaking levee bank started this morning and will continue through the night and over the weekend.
State Emergency Service spokesman Lachlan Quick said it had people on stand-by in the area with boats and vehicles on active watch.
He said the levee was at the active degradation stage, was getting worse and the next stage after that was a breach.
"If the levee does breach significantly it could create as much as a two metre wall heading through there, which is obviously of enormous danger to anyone in that area," he said.
Meanwhile, residents of the Murray River town of Echuca are preparing for a flood peak around Tuesday.
It has been given a moderate flood warning for the Murray River downstream of Yarrawonga and a major flood warning for the lower Goulburn River which meets the Murray just upstream from Echuca.
Mr Quick said the Australian Defence Force had provided it with two platoons who will help prepare 10,000 sandbags for Echuca and Moama, on the NSW side of the river.
"The main challenge will probably come from the Murray early next week sometime between Monday and Wednesday when the increase in the waters further upstream come down and affect Echuca," he said.
"At this stage it is only moderate, but we have to keep a really close eye on it."
The SES is also keeping an eye on some towns in the state's north-west, including Dimbooka, Warracknabeal, Quambatook and Kerang.
