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Legislative Assembly for the ACT: 2005 Week 06 Hansard (Friday, 6 May 2005 2005) . . Page.. 2019 ..


Mass curve studies are an outdated tool. They were developed in pre computer times and are subject to very specific assumptions. ACTEW now use very sophisticated computer modeling to determine our water requirements.

The modeling approach overcomes many of the limitations of the mass curve approach by the use of a simulation model that reflects changes in water demands due to climate differences, interdependence of different water supply sources and different climatic sequences. Accordingly, the level of complexity in the approach adopted by ACTEW is vastly improved to a mass curve approach.

The results of these studies suggest that better use of existing resources, and eventually an additional water supply, is needed for the ACT to avoid long periods of water restrictions with their associated economic costs and inconvenience. This is outlined in ACTEW’s first Future Water Options report An Assessment of the Need to Increase the ACT’s Water Storage, released in December 2004. The studies were also used in preparing ACTEW’s second Future Water Options report, released in mid April 2005.


Water—Murray Darling Basin Commission negotiations(Question No 344)

Mrs Dunne asked the Minister for the Environment, upon notice, on 5 April 2005:

Is the Murray Darling Basin Commission involved in discussions on the provision for a water cap; if so, what discussions have taken place so far; if not, why not;

What progress has been made on finalising a memorandum of understanding with the Commonwealth and NSW about provision for a water cap;

Why is the ACT Government negotiating with the Commonwealth and the NSW Governments over the water cap instead of negotiating with the Murray Darling Basin Commission;

When will the ACT Government finalise the memorandum of understanding with the Commonwealth and NSW about provision for a water cap.

Mr Stanhope: The answer to the member’s question is as follows:

No. The ACT will be required to negotiate a water cap as part of our obligations for full membership of the Murray Darling Basin Council. The arrangements are that the ACT will work with NSW and the Murray Darling Basin Council to resolve the matter.

The ACT is not involved in finalising a memorandum of understanding with the Commonwealth and NSW about provision for a water cap.

See (2) above.

See (1) above.



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