Bendigo SES deputy controller Natalie Stanway says 30 volunteers have been active in the past 24 hours, with 50 requests for assistance since 8pm on Friday night.
"The bulk of those requests have been for building damage and flood," Ms Stanway said.
Fallen trees and two rescue operations, including at the scene of a double fatality in Harcourt North were also attended by SES volunteers.
The second rescue was a person trapped inside their vehicle on Browning Street, Kangaroo Flat at about 8.30pm on Friday night.
Ms Stanway said that flash flooding in Bendigo is dangerous and offered some tips for people looking to barricade their homes.
"It is important to barricade entry points," she said.
"You don't need to make a sandbag fortress.
"Just barricade the doors and windows that might be entry points for water."
If you don't have sandbags, it is possible to use reusable shopping bags and garden soil, Ms Stanway said.
"If people can do something like this as best they can to protect their property it does help," she said.