The letter provides information for a flood with a 1 per cent chance of occurring in any year (known 1% Annual Exceedance Probability), both currently and in the year 2100.

This includes your property’s:

  • flood level – in metres from sea level (Australian Height Datum, or AHD)
  • flood depth – maximum and minimum across your property, in metres from the ground level.

For comparison, we’ll also provide the flood level from any previous modelling. If your property was not previously considered at risk of flooding, this information will not be available.

Request a letter

Complete the form below to receive a flood information letter within 14 days.

How to use this information

Even if your property is affected by flooding, the impact on individual buildings can differ. It depends on the depth of floodwaters, which can vary across a property, and how far the floors are from the ground.

If you need help understanding the information we provide, you can:

Plan and prepare

Information on current flooding can be used to develop your home or business flood emergency plan.

Building and renovations

The year 2100 flood level should be used if you plan to renovate or redevelop your property. You may need to change your designs to be flood resilient – such as setting appropriate floor levels to reduce the risk of damage.

To find out your property’s floor level, you may wish to engage a licensed surveyor. They can also advise if any buildings or structures on your property are below the flood levels that we’ve provided.

We’ll be working with local and state governments to translate this information into land use planning controls, through the Planning Scheme Amendment process. Once this is done, any new builds or property modifications that need a planning permit will be assessed against this new flood information.

Insurance and property values

Melbourne Water is not best placed to speculate or comment on property values or insurance premiums. Climate change impacts are global issues that the insurance industry has been dealing with and considering when setting their premiums.

We advise you to engage with your insurance company to understand your own circumstances.