Police are asking sightseers to stay out of Victoria's flood-prone areas as waters continue to move towards the Murray River town of Swan Hill.
The State Emergency Service (SES) said the floodwaters were moving at a rate of one to two kilometres a day, with Swan Hill expected to experience major flood levels on Friday or Saturday.
Police have banned swimming and the use of boats around Swan Hill until further notice due to safety concerns. Fines of $191 will apply.
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They have also asked sightseers to stay away from flood-prone areas for fear they could become trapped if conditions deteriorate unexpectedly and so they don't hamper emergency services.
A contingent of 90 army personnel and two Sea Hawk helicopters are helping locals to defend the township.
Emergency workers and volunteers are focussing a lot of attention on Lake Boga on Thursday where up to 50 houses are expected to be affected.
With the help of army personnel, they are building a 1.5-metre-high and three-kilometre-long levee at Lake Boga to try to reduce the impact.
North of Kerang, in Murrabit, some houses are expected to be inundated by flood waters on Thursday.
"Locals are aware and remain vigilant in the area," an SES spokeswoman said.
"An emergency alert has not been issued yet."
