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	2026
Jobs	Up to 110 (construction)

Date	Activity
15 May 2023	Coordinator-General stated a new lapse date for the Coordinator-General’s Evaluation Report on the IAR of 20 May 2025.
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 ( 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 ( 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 ( 3.2 MB), submitted.