Six Mile Creek Dam Safety Upgrade project

Project overview*

Status Approved with conditions
Description Proposal to upgrade the Six Mile Creek Dam to meet modern safety standards
Proponent Seqwater (Queensland Bulk Water Supply Authority)
Location/s Lake Macdonald, approximately 4km from Cooroy in Noosa Shire Map
Local government/s Noosa Shire Council
Investment $100 Million
Key features
  • staged and temporary lowering of the dam’s water level
  • construction of a temporary sheet pile coffer dam
  • decommissioning and demolition of the existing spillway and embankments
  • construction of a temporary concrete batching plant
  • construction of the replacement spillway in the current dam footprint with new structure built to modern safety standards with the same capacity and area
  • reconstruction of the right and left embankments
  • construction of an auxiliary dam, to prevent flood water discharging from the lake along Collwood Road.
Expected completion 2022
Jobs Up to 110 (construction)

IAR process

Date Activity
7 November 2019 Commonwealth Minister for the Environment’s approval of ‘controlled action’ subject to conditions.
20 May 2019 Coordinator-General’s report on the IAR (PDF icon 6.6 MB) released.
30 April 2019 The Coordinator-General accepted the draft IAR as the final IAR. Impact assessment report submitted. Supplementary information to the IAR submitted.
11 February 2019 to 11 March 2019 Draft IAR submission period.
22 December 2017 Gazettal (PDF icon 250 KB) of ‘coordinated project’ declaration.
6 December 2017 A delegate of the former Commonwealth Minister for the Environment and Energy decided the project is a ‘controlled action’.
18 October 2017 Project referred to the former Commonwealth Minister for the Environment and Energy.
15 September 2017 Application, including initial advice statement (PDF icon 3.2 MB), submitted.

Read more about the IAR process.

* Project information supplied by proponent and subject to change.

Last updated: Friday, Nov 15, 2019