Warragamba Dam Raising - Members' Views Sought


30th September 2021

The NSW Department of Planning, Industry and Environment (DPIE) is exhibiting a State Significant Infrastructure application, Environmental Impact Statement and accompanying documents for the Warragamba Dam Raising project.

This project is a controlled action under the Environment Protection and Biodiversity Conservation Act 1999 and will be assessed under the bilateral agreement between the NSW and Commonwealth Governments, or an accredited assessment process.

Warragamba Dam Wall raising would provide temporary inflow storage at Lake Burragorang to facilitate downstream flood mitigation in the Hawkesbury-Nepean Valley, west of Sydney. The Project comprises the following main activities and elements:

  • Demolition or removal of parts of the existing Warragamba Dam, including the existing drum and radial gates
  • Thickening and raising of the dam abutments and raising of the central spillway
  • New gates or slots for discharge of water from the dam and modifications to the auxiliary spillway
  • Other infrastructure and elements including new roads, bridges, ancillary facilities and installation of environmental flows infrastructure.

Further information is available at: planningportal.nsw.gov.au/major-projects/projects/on-exhibition

Comments can be provided to DPIE until Friday 12 November.

FMA has previously advised that raising the dam wall appears to be the only feasible flood mitigation measure for the Hawkesbury-Nepean Valley, however there would be environmental and aboriginal heritage impacts. To assist in preparing FMA comment on the proposal we would appreciate Members’ views on the benefits and costs.

Please provide comments by Friday 5 November to Executive Officer Glenn Evans: eo@floods.org.au
 

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