With the community's valuable input, the Clifton Springs and Drysdale Flood Study has helped identify flood-prone areas within the catchment. This will guide future development, planning controls and emergency planning to help keep the community safe and thriving.

Understanding the impact of storm events

To better prepare for storm events, we need to map where stormwater goes and its likely depth.

We can then use these maps to:

• assign flood-related planning overlays and building controls to protect homes and other infrastructure;
• prepare flood mitigation options; and
• investigate Integrated Water Management opportunities.

The 1% (1 in 100 year) and 20% (1 in 5 year) AEP flood extents have been developed by our consultant Cardno, using the current best practices for hydrologic and hydraulic modelling. The maps were then further refined following our first round of community engagement.

What does this mean for me?

Properties that are at risk of flooding in a 1% AEP event will be designated as land liable to flood.

The flood designation does not change the likelihood of flooding but recognises the existing risk of potential inundation in certain rainfall, storm or extreme high tide events.

Unlike most other natural hazards, floods are to a great degree predictable in terms of their location, depth and extent. This means that appropriate measures can be developed to reduce flood damage.

If your property is identified as liable to flooding it does not mean that building permits and building works will not be approved. The flood information is used to ensure that any building works are carried out in a manner that recognises the areas liable to flooding.