Wyangala Dam Upgrade
Preferred bidder announced
Greenfield (construction) or brownfield (government asset divestment) projects needed or likely to occur within the next five years, but is not formally proposed by a state, territory or major local government.
The project or divestment is supported by a state, territory or major local government, is subject to studies or other processes (such as pre-feasibility or scoping studies or business case development), and is likely to proceed to formal announcement.
The project has a firm commitment and timeline from a state, territory or major local government, but has not yet entered the market.
The project or transaction is under procurement (such as a call for Expressions of Interest, requests for tender, or another offer to the market).
Preferred bidder announced
A preferred bidder has been selected and is in exclusive negotiations.
Projects that have progressed to contractual close remain on ANZIP for 12 months.
ANZIP is focused only on major infrastructure activity, above the following thresholds:
Construction projects: > AUD$300m
Investable greenfield & brownfield: > AUD$100m
All greenfield and brownfield projects and divestments: > NZD $100 million
Wyangala Dam ensures water security and flood management in the Lachlan Valley. It also supports irrigated agriculture across the valley around Cowra, Forbes, Condobolin and Hillston. The dam has an existing storage volume of 1,218 gigalitres. The upgrade will include:
- Raising of the embankment and downstream rockfill to add an additional 650 gigalitres of storage
- Raising the spillway and intake towers of the dam by 10 meters, and
- Work to ensure safe access and maintenance on the crest and downstream areas.
2020: Commence community engagement
2020: Concept Design & Environmental Assessment
2021: Project Determination
2022: Detailed Design and Pre-Construction enabling work
2023 – 2025/27: Construction (2 – 4 years, dependent on design)
In October 2019, the NSW Government introduced legislation to fast track water infrastructure projects where there is a critical town water supply need. This legislation will attempt to shorten the approval process for the project.
WaterNSW is the state-owned corporation who operate and maintain the State’s rivers and water supply systems. It is expected they will conduct the procurement process for the upgrade.
$650 million funding was announced by the NSW Government as an election commitment in 2019
So far $32 million of the total funding pool has been allocated over three years within the 2019-20 NSW Budget, to investigate raising the dam wall.
In October 2019, a drought assistance announcement was made by the Commonwealth Government and the NSW Government to provide $650 million in funding on a joint basis. Half of the Commonwealth's commitment will be funded from the National Water Infrastructure Development Fund; the other half of the Commonwealth commitment will be financed from the National Water Infrastructure Loan Facility and ultimately repaid by NSW Government. Due to the use of the loan facility, the ultimate funding split between Commonwealth and NSW Government's will be 25:75.
In 2019, $650 million in funding was announced for the project by the NSW and Commonwealth Governments.
In 2014, the Lachlan Valley Water Security Study was undertaken by WaterNSW identifying a range of different options to improve regional water security. Raising of the Wyangala Dam wall was a key recommendation of the study.
The proposal to raise the Wyangala Dam wall follows the NSW Government’s announcement to fund a business case for building a 12 kilometre pipeline from Lake Rowlands Dam to Carcoar Dam, which was also identified in the Lachlan Valley Water Security Study.
Proceeds from the Snowy Hydro Legacy Fund will be used to fund the upgrade.
Last reviewed: 18/10/2019