Managing stormwater

Stormwater is rainwater that runs off surfaces such as lawns, roads, roofs, car parks and natural ground. We maintain stormwater infrastructure to drain rainwater away to prevent flooding in built-up areas. Stormwater is not wastewater – it flows into our waterways untreated.

We maintain over 2500 kilometres of stormwater drains. Each year we implement a range of projects to maintain and upgrade our stormwater infrastructure. This program of works aims to:

  • improve safety and functionality of stormwater systems
  • reduce flood risk during rainfall events
  • improve water quality
  • reduce ongoing maintenance requirements and costs.

Stormwater drainage

Landholders and developers are legally responsible for managing stormwater runoff from their properties.

The City provides a service to property owners experiencing stormwater problems that are caused by flow from stormwater installations – faulty gutters, downpipes, or piping – being redirected on to your property.

For more information, go to our Stormwater drainage page.

Water sensitive urban design

Water sensitive urban design is an approach to the planning and design of urban environments that supports healthy ecosystems through smart management of water.

We maintain over 450 water sensitive urban design devices, including detention basins, constructed wetlands and stormwater quality improvement devices. These devices improve the quality and control the flow of stormwater runoff into the city's creeks and channels.

Stormwater quality improvement devices are extremely expensive to build and maintain and are only a small part of the solution. They treat the problem, but they do not fix it.

Stormwater drainage and water sensitive urban design standards are applied to new development and other activities through the City Plan.