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New draft stormwater flood maps for the Banyule and Moonee Valley Local Government Areas are now available online for community feedback, giving residents a detailed and accurate picture of flood risk.
Melbourne Water encourages all Banyule and Moonee Valley households to check their address for the latest flood information.
The maps show that the overwhelming majority of properties in both LGAs are not at risk from stormwater flooding. In Banyule, 89% of properties are unaffected. In Moonee Valley, around 84% of the LGA’s approximately 71,411 properties are not at risk.
In Banyule, approximately 7,400 properties, around 11% of the LGA, could be affected by stormwater flooding in a significant rainfall event. Of those, 44% are in the two lowest hazard categories, rated H1 or H2, which are generally considered safe for people and buildings. For those households, the practical response is awareness and preparedness rather than significant action. The remaining flood-affected properties are spread across the higher hazard bands, with detailed information available for each address through the online maps.
In Moonee Valley, approximately 11,730 properties, around 16% of the LGA, could be affected. Of those, more than four in five (81%) are rated H1 or H2, generally considered safe for people and buildings. A further 12% are rated H3, where flooding may be unsafe for children, the elderly and vehicles. Properties rated H4 and above account for just 7% of flood-affected parcels in Moonee Valley.
The maps replace information from older flood models and were developed using modern flood modelling techniques aligned with current national standards. They include local drainage systems never previously modelled and show flooding for regional and local drainage mapped together for the first time.
“We encourage every resident in Banyule and Moonee Valley to check their address,” said Melbourne Water Executive General Manager, Service Futures, Chris Brace. “For most people, the maps will confirm they are not at flood risk, or that their risk is lower than they might have expected. For those who are affected, we want to make sure they have clear and practical information about what that means for their property.”
Residents whose properties are identified as potentially at flood risk will receive a letter from Melbourne Water during the consultation period. The letter will explain their property’s specific hazard rating, what it means in practice, and how to find out more or provide feedback.
Melbourne Water experts will also be available at community sessions to answer questions, explain what hazard ratings mean in practice, and hear local knowledge that could help refine the final maps.
The draft maps are open for community feedback. They do not change planning controls. Any future changes to planning controls involve a separate formal process, including public exhibition and independent panel review, in which residents can have their say.
The Banyule and Moonee Valley maps are part of the Greater Melbourne Flood Information Program, which will cover all 38 council areas across Greater Melbourne. Updated draft stormwater flood maps have already been released for Darebin, Yarra, Glen Eira and Merri-bek.
View the maps and register for a community session at:
