Review of Bungendore Floodplain Risk Management Study and Plan

  • Project value$207,000
  • Contractor nameAdvisian
Localised flooding in Bungendore village

This project involves a review of the Bungendore Floodplain Risk Management Study and Plan (FRMS&P) completed in 2014. An update of the Bungendore FRMS&P is required to include land identified in the recently adopted Bungendore Structure Plan which is being investigated for future urban uses beyond the current town boundary. The Bungendore FRMS&P will also be updated to comply with recently revised national guidelines for flood estimation.

The study area for the project encompasses the entire village of Bungendore and the surrounding floodplains of Turallo, Halfway and Mill Post Creeks.

Funding has been obtained from NSW Department of Planning, Industry and Environment (DPIE) as part of the 2019/20 NSW Floodplain Management Program, with Council to provide 2/3 of the project funds to a maximum value of $138,000.

Advisian have been engaged to produce the updated Bungendore FRMS&P.

Update May 2024

The following are the next stages of the project:

  • Consultant to investigate and develop floodplain management options based on feedback from the Bungendore Floodplain Management Committee
  • The Bungendore Bungendore Floodplain Management Committee will be meet to review and discuss developed options
  • Revised draft Bungendore Floodplain Risk Management Study and Plan will be developed with floodplain management options
  • Public exhibition of draft Bungendore Floodplain Risk Management Study and Plan. This Plan will be finalised based on comments from public exhibition and presented to Council for endorsement

Community Consultation

The initial consultation for this study encompassed a newsletter and questionnaire. As the study progresses, preliminary results will be placed on exhibition in the form of a draft report. The community will be invited to view and provide comment on this document.

In addition, public forums were held to present and discuss the results of the study.

What's been completed

  • Data collection and review
  • Stage 1 community consultation
  • Update of flood models to ARR2019
  • Flood model calibration and validation based on August 2022 flood event

What's next

Delays have been experienced on the project, particularly during the model development and calibration/validation stage. The primary reason for this was to incorporate the August 2022 flood event in the updated flood models, which meant revisiting the model updates after they had been completed.

During the August 2022 flood event, a considerable amount of data was able to be gathered by Council, NSW SES and the local community. Previous flood events in Bungendore have limited rainfall and flood level information, making data from the 2022 floods valuable for model development and calibration/validation. 

The next stages are:

  • Application of calilbrated flood models
  • Draft updated Flood Study report
  • Flood mitigation options development (including a meeting with the Bungendore Floodplain Risk Management Committee) 
  • Draft Floodplain Risk Management Study report produced
  • Public Exhibition of Draft Floodplain Risk Management Study
  • Finalise Floodplain Risk Management Study

 

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