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NSW Flood Data Portal

Floodplain Risk Management Study and Plan

Mullet and Brooks Creeks Floodplain Risk Management Study & Plan


Bewsher Consulting Pty Ltd was commissioned by Wollongong City Council, with financial assistance from the Department of Environment, Climate Change and Water
(DECCW), to prepare a Floodplain Risk Management Study and Plan for the floodplains of Mullet Creek and Brooks Creek, which are located near Dapto. Council also separately undertook investigations to consider and manage the West Dapto Release
The study was overseen by the Mullet and Brooks Creeks Floodplain Management
Committee, which comprises councillors and staff from Council, officers from DECCW, the State Emergency Service and the Department of Planning, business stakeholders and several community representatives.

Principal Outcomes

The principal outcomes of this study include:
* A revision of the former Flood Study, with improved estimates of flood extents, levels and depths for the 20%, 10%, 5%, 2% and 1% Annual Exceedance Probability (AEP) events and the probable maximum flood (PMF) (BMT WBM, 2010);

  • Estimation of the high, medium and low flood risk precincts used for planning control (Chapter 4);
  • Definition of the flood problem by construction of a Flood Damages Database, which quantifies flood damages and records information on existing potentially flood affected properties within the study area up to the PMF (Chapter 5);
  • An evaluation of potential floodplain management measures to reduce flood damages to existing development, incorporating input from the community (Chapter6);
  • A summary of work done to assess and mitigate the impacts of flooding associated
    with development of the proposed West Dapto Release Area (Chapter 7);
  • Assessment of the potential impacts of climate change on flood behaviour, and a
    re-evaluation of potential floodplain management measures in view of those impacts (Chapter 8);
  • A recommended Floodplain Risk Management Plan (FRMP) for the Mullet
    Creek and Brooks Creek floodplains (Chapter 9).

Additional Information

Field Value
Title Mullet and Brooks Creeks Floodplain Risk Management Study & Plan
Publication Date 1 February 2010
Themes Land and Resource Management
Spatial Extent
© OpenStreetMap contributors
Council/LGA Wollongong City Council
Author/ Prepared by Bewsher Consulting Pty Ltd
Publish date 15 September 2017
Update date 10 November 2017
Place Name Dapto
Approval State Approved
Submitted for approval 20 September 2017
Submitted by Don Stazic
Approved 30 September 2020
Approved by ses-sysadmin
Data Comment

Report only.

Identifier 4f468800-0d66-411b-9374-30dd063147b5