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Flood Prone Land is land that is susceptible to flooding. It is also known as flood liable land. The Australian Bureau of Meteorology determines the greatest depth of precipitation that is meteorologically possible for locations across the country and the flooding that this rainfall produces determines the flood prone land extent. The full extent of flood prone land defines the floodplain and is used for emergency response planning purposes to address the safety of people and property.

Flooding can occur in rivers and streams flowing across the area, as coastal flooding due to tidal or storm-driven coastal events, including storm surge and wind-induced wave generation, exacerbated by rising sea levels. Flooding can also occur through urban areas and overland flow paths where local drainage systems can't cope with the rainfall. This type of flooding often occurs quickly and subsides faster than mainstream flooding.

It is recommended that critical infrastructure or vulnerable development (such as hospitals, emergency services, evacuation centres, group homes or seniors’ homes) are not located on flood prone land. Increasing our community's resilience to flood risk generally involves a combination of flood mitigation, emergency management, flood forecasting and warning measures, land-use planning, and infrastructure design considering the local flood situation and the associated hazards across the entire floodplain.

Flood Hazard Maps

Council’s Flood Hazard Maps are currently being updated to incorporate the latest data from recent Flood Studies.

The most up-to-date flood information is available as follows:

  • from Flood Studies listed in the Flood Management Program
  • from the NSW Flood Data Portal which makes available Council’s data from flood projects under the current NSW Floodplain Management Program
  • from a Flood Certificate. Customers seeking detailed flood information (including the Flood Planning Level and the flood hazard category) are encouraged to request a Flood Certificate for their particular lot to obtain current flood information.

Development Engineer
Phone: 02 4988 0255
Email: Development.Engineering@portstephens.nsw.gov.au