Bungendore Floodplain Risk Management Plan - Implementation

Project typeCapital works
Project valueMeasure 1 - $1.2 million | Measure 2 - $600k | Measure 3 - $3.2 million
Project scheduleMeasure 1 - completed December 2020 | Measure 2 - TBC | Measure 3 - completion by mid 2026
Contractor nameMeasure 1 - Guideline ACT | Measure 2 - TBC | Measure 3 - TBC

Measure 3

The Bungendore Overflow Channel is a recommended flood risk management measure from the adopted 2014 Bungendore Floodplain Risk Management Study & Plan (FRMSP). The Overflow Channel is the next priority floodplain risk management implementation measure of the adopted study and plan.

The work involves construction of an Overflow Channel of Turallo Creek, Bungendore that bypasses the bridge on Tarago Road. This will provide flood relief by diverting higher flowing floodwater through new box culverts beneath Tarago Road upstream of the Turallo Creek bridge crossing so that they will re-enter the creek downstream of the confluence of Turallo and Halfway Creeks.

This will direct flood waters away from properties in the Bungendore town centre and reduce the backup of flood waters where Turallo and Halfway Creeks join. Flood storage will also be provided during major events, decreasing the flood impact on nearby properties. The proposed channel has been designed and will be grass lined with a trapezoidal shape.

Grant funding has been obtained through the NSW Flood Recovery and Resilience Grant Program, with NSW Government covering 75% of the project cost.

Council will engage a contractor to construct the channel through an open tender process.

Measure 2

This project involves completing part of the Bungendore Levee Upgrade, which is one of the recommended flood mitigation measures from the adopted Bungendore Floodplain Risk Management Study & Plan (2014).

Funding has been obtained for a partial upgrade of the levee from the Federal Government’s Emergency Response Fund. NSW Public Works (NSWPW) will manage the project and will be the Principal. Council's role on the project is the determining authority and key stakeholder.

The project does not include the eastern section of the Bungendore Levee Upgrade (east of the Bungendore Bowling Club) due to insufficient funding. Following completion of the western section, Council will seek grant funding opportunities and our required contributions in future Council budgets for the remainder of Measure 2.

Implementation Measure 1 - completed

We engaged a contractor to carry out the Bungendore Flood Risk Management Plan Implementation Measure One works. This stage involved clearing of non-native vegetation and reshaping the area where Turallo and Halfway Creeks meet. The reshaping works will help with increased storage for flood water help improve flows. The work has included planting of over 30,000 native trees and shrubs to rehabilitate the creeks.

Flooding of Turallo and Halfway Creeks results in economic and social impacts to residents and business owners in Bungendore. In 2014 Council adopted a Floodplain Risk Management Plan for Bungendore which recommended a variety of flood mitigation measures be implemented. This led to the production of designs for various flood mitigation measures aimed at reducing the impacts of flooding in Bungendore. The Measure 1 flood mitigation works will enhance the capacity for floodwaters to escape more rapidly from the confluence of Turallo and Halfway Creeks during major flood events.

The project has received funding from the NSW Department of Planning, Industry and Environment (DPIE) under the 2019/20 Natural Disaster Resilience Program’s Floodplain Grants Scheme. Under the funding agreement Council provided 1/3 of the funding.