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When the rivers don't run

07 Jul, 2009 10:07 AM
ONE of Australia's top scientists has urged federal and state governments to ''reset the Snowy Mountains scheme'' and run it with less water.

The cost of upgrading the scheme's ageing infrastructure, and increased competition following federal reforms to the national electricity market are also raising doubts about the future cost effectiveness and reliability of the Snowy hydro-electric scheme.

The head of the NSW Natural Resources Commission, John Williams, said a 60 per cent cut in water use across the Murray Darling Basin is required, and the Snowy scheme which diverts water for irrigation to the Riverina cannot be exempt from the push for water savings. ''The gold rush that was fed by water is over. The gold is drying up.''

Dr Williams, a former NSW chief scientist and head of CSIRO Land and Water, has called for federal and state governments to urgently renegotiate the volume of water diverted from the Snowy for irrigation.

The NSW Government is currently reviewing the Snowy Hydro Corporation's water licence, with Victorian independent MP Craig Ingram calling for changes to tighten licence conditions. The scheme is jointly owned by the Commonwealth (13 per cent), NSW (58 per cent) and Victorian (29 per cent) governments.

Mr Ingram, a former fisherman, won his East Gippsland seat from the Nationals 10 years ago with a high-profile campaign to save the Snowy. In a submission to the Snowy Hydro water review, he said the company ''has been manipulative, deceptive and has caused the NSW and Victorian governments to lose credibility with the local community''.

Mr Ingram said the river was being operated ''like an irrigation channel [with] no variability or environmental benefit''.

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Former fisherman and Victorian MP Craig Ingram would be well advised to revisit the parable of the loaves and fishes.

We need the loaves to feed ourselves.

Substitute the word 'irrigation', which the MP uses pejoratively, for 'food and fibre production' employing tens of thousands of people and producing the bulk of the nation's sustenance and Craig the fisherman's simple world view is suddenly less clear cut.

Do we really need a miracle for Craig and co to see the light?

Posted by Mike Cahill, 8/07/2009 4:59:32 AM
Take a look at "Snow Job on the Snowy River" at http://jennifermarohasy.com/blog/2007/01/snow-job-on-the-snowy-by-ian-mott/

Note the adjusted flow volumes after the increase in catchment water yield from clearing in the NSW part of the Snowy catchment.

"And that means that the current mean annual flow (of the Snowy River) of 1.644 million Ml is actually 96 per cent of the pre-settlement flow. In effect, all but 44,000Ml of the 513,000Ml that is diverted from the Snowy to the Murray is already compensated for by the increased runoff (into Victoria) from clearing in the NSW portion."

Note also that the upper portion of the river goes through a large 270 degree loop that would enable the full restoration of river flows in that section by pumping each days normal flow back to the starting point for the next days flow.

As long as the pumping cost of a megalitre is less than the price per megalitre of irrigation water, then this form of multiple recycling is fully viable.

It is doubly viable when the existing flows down into Victoria can be used to drive hydraulic rams for the recycled portion.

The current Snowy River policy is being driven by ignorance and predatory, anti-farmer agendas.

Posted by Ian Mott, 8/07/2009 7:30:28 AM
All of our rivers are being run like irrigation channels. Officials talk about "transmission losses", when they are really referring to the natural uses of water along a river.

They should instead talk about "irrigation losses", that is unnatural water losses. Rivers are being treated like drains to carry water between irrigation schemes.

Inter-valley water trading is a classic example - just because all the Murray-Darling Rivers meet at the end, it does not mean that you should pull large amounts of water out of one river, just because there is water in another one.

We should probably take a leaf out of Peter Andrews' book, and slow down the flows in some of our rivers. Replacing rock bars in the Darling would be a good start. They were blasted in the paddle steamer days, and now the river runs unnaturally fast, with fewer remnant pools at low levels.

Posted by Barney, 8/07/2009 11:20:06 AM
The problem, Barney, is that irrigation water that flows the entire length of the system to be used by SA Farmers and Adelaide gardeners is still being treated as if it were a 100pc loss of flow in the system.

This is clearly 98pc wrong and one must ask when, if ever, so-called experts like Williams will stop making serious misrepresentations of fact to the policy process.

Posted by Ian Mott, 9/07/2009 2:14:07 PM

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Dr Williams, a former NSW chief scientist and head of CSIRO Land and Water, has called for federal and state governments to urgently renegotiate the volume of water diverted from the Snowy for irrigation.
Dr Williams, a former NSW chief scientist and head of CSIRO Land and Water, has called for federal and state governments to urgently renegotiate the volume of water diverted from the Snowy for irrigation.
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MULTIMEDIA
29 June, 2009
03 July, 2009
POLL
Q: Many federal politicians are overseas on trade missions and study tours, during Parliament's winter recess. Is the cost to taxpayers justified?

Yes, the trips are worthwhile.
(26.7%)

No, they're not justified.
(73.3%)

Total Votes: 435
Poll Date: 06 July, 2009

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