UPDATE: A FLOOD barrier at the northern end of Nathalia was reinforced with sandbags after springing leaks today.
The town's main levee continues to hold but with the floodwater at its peak of 3.25m authorities are worried it may not hold under the pressure.
A SES spokesman told weeklytimesnow about 11am today crews were "continuing to monitor and conduct maintenance" on the main levee under the instruction of an engineer.
"There has been some leaks in the temporary barrier in the north near the cemetery and DSE, CFA and the army are working to reinforce it."
An incident control centre spokeswoman said six panels of the northern barrier had begun leaking and the crews had used sandbags.
She said the water was expected to remain above 3m for the next 48 hours.
More than 1400 residents were told yesterday the SES recommended they evacuate but only a small number had decided to leave.
The spokeswoman said 165 people had registered with police as they left the town but it was believed several people had returned to the town today.
More than 140,000 sandbags are in place in Nathalia, with close to 400,000 deployed throughout northern Victoria.
Four houses in Nathalia's east have been flooded, with about three farmhouses in the north also believed to have been inundated.
A community meeting will be held at the Nathalia hospital carpark at 36-44 McDonell St at 5pm to update the community on the situation.
Meanwhile, floodwaters in the nearby town of Numurkah are continuing to slowly recede.
About 90 homes there have been flooded and some areas remain isolated.
The State Government has set up a flood response centre in the nearby farming town of Tatura and says it aims to contact all farmers affected by floods by the end of next week.
Department of Primary Industries staff are making hundreds of phone calls a day to local farmers to assess losses and damages, Agriculture minister Peter Walsh says.
"Not only will flood damage and loss be assessed but if the farmer has any agricultural or urgent animal welfare issues or other immediate problems they will be put in touch with the relevant person or agency for assistance," Mr Walsh said in a statement.
A community meeting will be held tomorrow at 10am in Barham to update residents.