The City of Greater Geelong Stormwater Services Strategy 2020–30 establishes a 10-year program focused on improving long-term management of floods, protecting the environment from stormwater pollution, and increasing stormwater reuse through integrated water management. The overall aim is to support Greater Geelong’s growth, health, and liveability.

We've completed several stormwater studies across the municipality with more underway (see below).

These studies help us to better understand flood risk and the opportunities for stormwater and integrated water management. Understanding flood risks mean we can better prepare the community in the event of a large^ storm.

We have 25 catchment management units (see map) across the municipality with high priority catchment areas studied first.

Large refers to a 1% Annual Exceedance Probability (1% AEP) which means that a flood of this size has a 1% chance of occurring in any year.

A common misconception is that a 1-in-100 year event can take place only once every 100 years. However, it actually has a 1 in 100, or 1%, chance of occurring at any single location in any given year.

A better term is Annual Exceedance Probability (AEP). This refers to the probability that a flood event of a given magnitude will be equaled or exceeded in any one year. For example, a 1% AEP means the chance of a 1-in-100 year flood occurring this year, next year, or in any year is always 1 percent.

Our active projects

Our completed stormwater studies

FAQ's & key terms explained