Use the map to share your knowledge

There are two maps you can comment on - both are DRAFT models only. The knowledge you share will help us test the accuracy of these draft models, and improve and validate any final map models.

Map 1 is a draft model to represent the 2022 flood event.

Map 2 is a draft model to represent a large scale flood event. We use the 1% Annual Exceedance Probability (AEP) standard. This is used by the Victorian Government to represent a flood that has a 1% chance of occurring, or being exceeded in any given year. For example, a 1% AEP indicates that there is a 1% change in any given year if the event occurring, which means that on average one event of this size or larger will occur every 100 years - this model also factors in future climate change impacts.

The ask:

Add your comments, evidence or photos directly on to either map - please provide as much detail as possible.

Map 1: 2022 flood event draft model

Map 2: Large flood event draft model

FAQ

We produce flood maps to assess flood risk.

Our maps must adhere to standards from the Department of Energy, Environment and Climate Action (DEECA) and also:

Be developed in consultation with the local community
Make use of local knowledge
Be vetted by the North Central Catchment Management Authority and local Traditional Owners, Djaara
Provide flood information at a property scale that can be used, understood and shared with flood emergency services agencies
Use hydrologic and hydraulic models to determine flood flows, levels and velocities for a range of flood extents, from moderate to extreme, as well as historic floods.

1% AEP modelling

The Annual Exceedance Probability (AEP) is measured as a percentage and is a term used to describe flood size.

It is a means of describing how likely a flood is to occur in a given year.

For example, a 1% AEP flood is a flood that has a 1% chance of occurring, or being exceeded, in any one year.

The 1% AEP is the Victorian Government standard used to inform floodplain management and waterway design so that any new developments through state planning and building systems are as protected as possible.

The final maps will be used to determine flood hazard, flood damages and ultimately flood risk.

We will use the maps to develop flood mitigation strategies which may include new planning controls for Newstead.

How to use the maps

Learn about the map tools here

Map 1: 2022 flood event draft model

Map 2: Large flood event draft model

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