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NSW Flood Data Portal

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Flood study

Minnegang Creek Flood Study

Minnegang Creek is situated approximately 8.5 km south of Wollongong. Significant flooding has previously occurred within parts of the Minnegang Creek catchment. Halliburton KBR Pty Ltd (Halliburton KBR) was engaged by Wollongong City Council (Council) to undertake the preparation of a Floodplain Risk Management Plan for the Minnegang Creek catchment. The Floodplain Risk Management Plan is being developed in three stages; a Flood Study, Floodplain Risk Management Study and Floodplain Risk Management Plan. This is consistent with the approach recommended in the NSW Government’s Floodplain Management Manual: the management of flood liable land (2001). This Flood Study, as the first stage of the above process, aims to define the existing flood behaviour in the Minnegang Creek catchment for the 20%, 5%, 2% and 1% Annual Exceedance Probability (AEP) floods as well as the Probable Maximum Flood (PMF). Flood behaviour has been defined by; design flows, flood surface profiles, flow velocities, flood extents and flood contours.

In some locations, Minnegang Creek and its larger tributaries are piped under residential properties with little or no provision for overland flow. The properties in these areas have been identified as having suffered, or at risk of, flood damage. Areas specifically affected are:

  • where Minnegang Creek passes under Lake Heights Road and Barina Road
  • where Minnegang Creek’s tributary passes under Gilgandra Street
  • where Minnegang Creek exits Barina Park
  • where Minnegang Creek passes under Mirrabooka Road and Weringa Avenue.

Additional Information

Field Value
Title Minnegang Creek Flood Study
Publication Date 18 October 2002
Themes Land and Resource Management
Spatial Extent
Map data © OpenStreetMap contributors
Council/LGA Wollongong City Council
Author/ Prepared by KBR
Publish date 1 July 2019
Update date 1 July 2019
Approval State Approved
Submitted for approval 1 July 2019
Submitted by Akhil Sud
Approved 1 July 2019
Approved by dstazic
Identifier c0d1c308-daf9-471c-b7b7-1066aea3f98f