Map of Northern Territory
Storage improvements
Location
Darwin
NT
Estimated cost
$327.59 million
Project status
underway
Funding

The $327,590,000 project is jointly funded by the Australian Government ($300,590,000) and the Northern Territory Government ($27,000,000). Australian Government funding is provided through the National Water Grid Fund.

Image of Manton dDam, surrounded by green bush land, with a semi-circular concrete dam wall in the foreground and blue sky and clouds above.

The project will see Manton Dam returned to service for the region. Image credit: Power and Water.

Project overview

The project includes:

  • returning the Manton Dam to service
  • preconstruction works for the Adelaide River Off-Stream Water Storage (AROWS) project.

Existing infrastructure at Manton Dam will be upgraded to return the dam to service. The project will also build the first phase of the Strauss water treatment plant and distribution network.

Returning Manton Dam to service will increase usable water storage capacity by 14,000 megalitres (ML) and will provide 7,300 ML of water per annum to the Darwin supply network. 

Construction to return Manton Dam to service commenced in July 2024 and is expected to be completed in mid-2026. 

Pre-construction work on the AROWS project is underway and includes:

  • an environmental impact assessment
  • pre-tender concept design
  • delivery model assessment
  • re-confirmation of financial and economic outcomes.

AROWS has the potential to provide 250,000 ML of water storage and supply an additional 60,000 ML of water to the Darwin supply network.

Key project benefits

Climate change resilience
Economic
Increased storage capacity
Water security