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Water Planning for Sydney
Water planning for Sydney

Water for people and water for the environment

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Water for the environment

The dams for greater Sydney have been built specifically to capture water that can be used for supply to people. Recognising the importance of maintaining some flows down stream has resulted in major works to modify dams and weirs to allow for these environmental flow releases.

The NSW Government also recognises the importance of improving and protecting the quality of water in the rivers upstream of Sydney’s major water reservoirs by caring for catchments.

Metropolitan Water Plan initiatives to help improve the health of our rivers include:

  • a new fishway at Tallowa Dam to allow for the upstream and downstream migration of native fish, including the endangered Australian Grayling
  • modifications to infrastructure to allow environmental flow releases at Avon Dam for the first time in 2008
  • modifications to Cataract, Cordeaux and Nepean dams allowing for new environmental flows from 1 July 2010
  • modifications to weirs along the Hawkesbury-Nepean River to provide improved downstream flows and allow for fish passage
  • development of water sharing plans for the rivers and groundwater systems of the greater Sydney region to define how naturally occurring fresh water must be shared between the environment, agriculture, industry and urban consumers

To find out more visit the Sydney Catchment Authority website, or view Chapter 7 of the 2010 Metropolitan Water Plan (PDF)