FAQs

The Strategy articulates how we intend to manage stormwater into the future. This supports Council in developing a mature stormwater infrastructure pipeline which delivers value to the community.

Stormwater management is the term used for planning and implementing actions that manage urban stormwater runoff and overland flows from areas such as roofs, roads, pavements, and green space. Flooding can result from multiple sources including rivers, creeks, coastal storm surge and overland flows. The management of overland flooding and stormwater is the subject of this strategy.

Overland flooding occurs when urban stormwater runoff and overland flows exceed the capacity of the drainage system and usually occurs with little or no warning. When this occurs, water begins to flow over the surface of the land along natural flow paths or valleys towards the nearest creek or river. This type of flooding may be hazardous and presents a risk to the community.

Flooding only presents as a hazard where it exceeds the coping capacity of the environment or community.

Flood risk refers to (and is a measure of) the likelihood and consequence of the flood hazard eventuating.

Projects will be prioritised based on risk and value based on a multicriteria assessment (MCA) framework as shown below.  This MCA framework captures the benefits, deficits and costs associated with each project using a simple scoring system. The score for each project is summarised in a ranked list which will support decisions regarding future stormwater investment.