Climate change, urbanisation and ageing infrastructure are increasing the frequency and severity of flooding.

Melbourne Water is working with local councils to update flood maps across the Greater Melbourne area using the latest computer modelling, current and forecast rainfall data, and local knowledge. This will help us better plan and prepare for future flood events.

The flood maps will provide a more accurate and consistent approach to identifying the location and severity of flood risks. The maps can assist with:

• Emergency response to flooding
• Council stormwater drainage management, maintenance and capital works programs
• Reducing flood risks for future development.

We want to find out more about your local experiences with flooding in Monash. Share your knowledge by Sunday 13 April 2025.

Click the Follow button at the top of the page and you will receive notifications via email on the flood mapping project.

Council is continually working to reduce the risks and impacts of flooding in the municipality.

We provide maintenance to our stormwater drainage network which includes kerb and channel, drainage pipes and pits in the street and most easements.

Maintenance can include street sweeping, removal of rubbish, silt, tree roots and other blockages.

We also upgrade and replace our drainage system as required. Council has multiple projects to manage stormwater which include:

• Rehabilitation works – replacing failed drains
• Local drainage program - for minor storm events less than 5% Annual Exceedance Probability (AEP)
• Strategic drainage program - for major storm events greater than 5% Annual Exceedance Probability (AEP)
• Development Contribution Program – where new developments contribute to the upgrade of drains in the area generally greater than 5% Annual Exceedance Probability (AEP).

Some major drainage projects include:

• Ashbrook Court, Kaybrook Court, Redpath Close and Scotsburn Avenue, Oakleigh South - $2.05 million completed
• Riversdale Golf Club, Mount Waverley - $2 million completed
• Bogong Reserve, Glen Waverley - $330k litter trap completed
• Luke Street, Clayton - $305k completed
• Gemini Court, Domino Court, Rochelle Court and Aquarius Court, Wheelers Hill - $430k completed
• Hinkler Reserve retarding basins - $770k completed.

Council provides flood management and prevention advice to the community and supports the State Emergency Services in preparing for emergency flood events, assistance during events and clean up.

We apply building and planning controls on developments to appropriately consider flooding, and address and mitigate flooding risk.

It is not feasible to completely stop flooding from occurring especially during extreme weather events. Upgrades to stormwater drainage systems may not be feasible for several reasons such as high costs and budget constraints, land availability and underground services, the capacity of drainage systems and waterways further downstream, and other social and environmental impacts.