Flood study for South Warrnambool

Warrnambool City Council will undertake new flood modelling of the Merri River catchment in South Warrnambool.

The South Warrnambool Flood Investigation will cover an area from Rutledges Cutting to the mouth of the Merri River.

The new study will expand on a 2007 study by adding storm tide flood risk mapping and looking at how development in the area is affected by flooding.

“The investigation will look at the risk risks posed by large storm tide events and by the worsening flood risk profile due to the effects of climate change,” Mayor Cr Vicki Jellie said.

“Updated knowledge on climate change-induced extreme events, sea level rise and storm tide flooding will enable more effective planning for South Warrnambool.

“Ultimately the investigation will result in an amendment to the Warrnambool Planning Scheme that will include revised flood mapping and land use controls.”

The investigation will also:

  • assess the feasibility of establishing flood alerting/warning arrangements (including for significant storm tide events);
  • provision of reliable flood risk information for insurance purposes;
  • provision of flood mapping and intelligence products for the entire project area to inform and develop emergency response planning and build community flood resilience; and,
  • assess the feasibility of structural flood mitigation works.

“Council is encouraging South Warrnambool residents to become involved in the project,” Cr Jellie said.

“Along with the scientific data we’re also wanting to know about anecdotal and lived experiences.

“Residents will soon be invited to go online to www.yoursaywarrnambool.com.au and share flood information and images to help build a complete picture of flooding across the South Warrnambool area, including Merrivale.

“We will also set up a listening post for residents where residents can drop in and provide information – we’ll announce the date and time for this in coming weeks.”

The Glenelg-Hopkins Catchment Management Authority is managing the project on behalf of Warrnambool City Council with technical work including flood modelling to be carried out by Venant Solutions.