Showing posts with label Murray. Show all posts
Showing posts with label Murray. Show all posts

Tuesday, December 06, 2011

Submission on the proposed Basin Plan

TO: Murray Darling Basin Authority
DATE: 6 December 2011

TO WHOM IT MAY CONCERN

I have visited the Murray Darling basin on many occasions, from the headwaters of the Murray River at Cowambat Flat all the way to the lower lakes of the Murray mouth and the Coorong.

The river system is remarkable. Its natural systems are unique in Australia and irreplaceable.

It has been obvious for decades that too much water was being drawn from the system, mainly for agricultural use. I studied Agricultural Science at Latrobe university, during which I learnt that much of the irrigation infrastructure was very wasteful of water, including open channels, flood irrigation of dairy pastures, sprinkler irrigation systems and even rice cultivation.

South Australia has born the brunt of the problems with drastic depletion of the river flow in its lower reaches and serious pollution of the water by heavy salt burdens and agricultural chemicals. Adelaide still sources the majority of its drinking wate from the Murray River.

The drastic impacts on the lower Murray, its lakes and the Coorong during the recent 10 year drought were unacceptable. Some lakes drained, exposed soils became acidified and toxic, and sea water threatened to invade the freshwater system and severly impact its freshwater ecosystem.

Regular flushing of the river system - as used to happen during regular floods - is essential for its health.

Appropriate regular ecological flows are essential for preserving the integrity and life of the Murray Darling system. I understand that scientists have recommended a minimum of 4000 gigalitres.

Reducing ecological flows in response to political campaigns and pressure from industries that continue to demand unsustainable quantities of water from the system will damage and even kill the system. When this happens, the industries will be forced to reduce their water use - they cannot use water that is not there.

The 2750GL now recommended by the Authority is not enough to save the system.

In addition, the doubling of extraction from groundwater resources is also likely to deplete aquifers.

The low environmental water flow and more extraction of groundwater will put ecosystems, communities and industries at risk.

The Plan must halt the decline of waterbirds, fish, red gums, flora and fauna, reduce blue-green algae outbreaks and improve water quality. A minimum of 4000 gigalitres is necessary to achieve this.
Peter Campbell

Information about how to make a submission is here: Murray-Darling Basin Authority

Saturday, October 16, 2010

Water and the Murray Darling river system

We have recently seen the Murray Darling river system - Australia's greatest river system - drastically affected by reduced water flow due to the combined effects of climate change and irrigation from the river.

For several years the Murray River stopped flowing into the sea.  Barrages (like dams) are in place to stop seawater  moving backup through the lower lakes and river systems, including the wonderful Coorong.  If saltwater were to do this, the freshwater ecology of these parts of the system would be greatly damaged.

The drought that lasted over 10 years exceeded all wort-case estimates by climatologists and weather experts.  It has been broken in 2010, but the underlying causes for it have not gone away, and this cycle could be repeated within the next decade.

The drought drastically reduced water flows.  Many farmers with water allocations ("rights") along the river simply could not get their water.  Orchards, vineyards and dairies relying on water from the river had to shut down or close, and many commercial trees and agricultural crops died.

There is no point having water rights if there is no water.

The Wentworth Group of Scientists warned of this scenario over a decade ago, but their warnings and recommendations were ignored by governments and policy makers.  There has been much talk about "doing something" to restore desperately needed environmental flows to the river system, but very little effective action to date.

The Murray–Darling Basin Authority (MDBA) has now commenced community engagement about actions and recommendations to restore environmental flows the river system.  They have released the a Guide to the Basin Plan document.

Some of the proposal and information on the guide include:
  • Proposed basin-wide cuts to water extraction of 27 to 37 per cent.
  • $9 billion has been allocated to buy back water allocations
  • No one will be forced to sell water
  • In many river valleys a lot of the reductions in water allocations has already occurred
  • Two-thirds of the minimum 3000-gigalitre reduction will be achieved by 2014 through programs already in train.
  • The amount of additional surface water needed for the environment is between 3,000 GL/y and 7,600 GL/y (longterm average).
  • The current average volume of water provided to the environment is about 19,100 GL/y, so this range of additional water would mean that the long-term average volume of water provided to the environment would be between 22,100 GL/y and 26,700 GL/y.
The guide details possible water reductions required in numerous regions within the basin.  This has generated major concern within rural communities within many regions, who fear that reduced water allocations will have drastic financial impacts on agricultural producers and the local economy and towns they support.
This will certainly be the case - but similar impacts have occurred, and will occur again, when water in the river system becomes scarce again.

There have been loud and irrational outbursts at public consultation and meeting and directed and the Federal Government , the Water Minister and numerous other members of parliament.

It is worth noting that so far only a guide to the plan has been release, not any binding plan or commitments.  This is being misrepresented by emotive claims by some rural commentators - and federal politicians such as Senator Barnaby Joyce - that "this plan (sic) will lead to the decimation of rural agriculture and country towns".  This is not consultation or a debate - this is a beat up.

Cotton, rice and vineyards all produce crops and products that require vast amounts of water (more information).  Ditto for dairies. I think it is clear that this type of production should happen in regions that have sufficient available rainfall, rather than chronically depleting a river system.

It is not hard to see why there has been no effective action on restoring environmental flows in this river system to date.  Any attempts to do so are met with a barrage of emotion and accusations, which in the past have  lead to major water reforms being shelved.

It is to be hoped that the current water reform process doesn't suffer the same fate.  Otherwise the next severe drought will cause decimation of rural agriculture and country towns along with like death of much of the ecology of the river system.

The new parliamentary committee for regional Australia, chaired by independent MP Tony Windsor whose electorate will be affected by the plan, appears  likely head up a parliamentary inquiry into the social and economic effects of the proposed cuts.  Let's hope he acts in the best interests of all Australians in doing so.

External links
This post is part of Blog Action Day: blogactionday.change.org

Petitions by Change.org|Start a Petition »

Sunday, April 05, 2009

The Victorian Government's water strategy is all at sea

This is a letter to the editor from Brian Wilson of Doncaster East published on April 5, 2009 [link]

I think it describes concerns about the Victorian Government's obsession with large scale water projects, and the overlooking of more sensible, sustainable water options such as water tanks and recycling. It highlights to me too that many in the community want more focus on sustainable water options, and the government that is supposed to represent us is not listening or consulting, and that the government's agenda is driven by the "big end of town".

Recycling washes best

"Water projects 'not needed' " (29/3) included reference to the consultants' (ignored) recommendation that recycled water for drinking should get "serious consideration", but that this would require a large public education campaign. Unfortunately, the only "education" campaign by this government to date has been to reinforce the public misconception that water recycling is somehow unsafe; the reality is that the reverse is true.

Water recycling is being used with complete safety in many parts of the world, and Queensland is also well down that path (an initiative that, it could be argued, the voters in that state have recently endorsed).

And just think of the advantages that recycling, rather than desalination, would achieve. The waste water treatment plant (or plants) would be located at or near existing treatment facilities. So no need for the Wonthaggi site and connecting pipes and power lines.

And waste water would no longer contaminate the ocean at Gunnamatta as it would be recycled. And the end result would be exactly the same — pure water!

Recycling uses the same reverse-osmosis process as desalination, so much of the current design would be retained. But because it is far less energy intensive, running costs (and therefore the impact on the environment) would also be less.

And as for the north-south pipeline, its only possible redeeming feature, given it now appears to have passed the point of no return, is that one day it may be used to pipe north some surplus recycled water to help relieve the stressed Murray-Darling system.

Video
Check out this video about the desalination plant, and visit http://www.getrealonclimatechange.org/

Thursday, August 07, 2008

The death of the Murray Lakes

I could not really believe reading today that Climate Change and Water Minister Penny Wong has written of the lower Murray Lakes. This is a monumental and catastrophic failing of our political system - which has now compromised our environment and water supplies to the point where irreversible damage has been done - and worse is to come.

At the same time, in today's newspapers Victorian Planning Minister Justin Madden has given approval for the Brumby Government's "north south pipeline" - to take water from the Goulburn river (and hence the Murray Darling system) - even though there is no water there for them to take! If it was a comedy it would be funny. But they are serious!

89% of voters in the Heraldsun online poll on this topic:

Certainly oppose this lunacy.



On Q&A on ABC TV tonight, Federal Environment Minister Peter Garrett defended the Rudd Government's manifestly inadequate emission reduction targets (60% by 2050) AND the north south pipeline "because Melbourne needs the water".

The best Garrett and Wong can do is claim they are better than the opposition - who are still basically stuck in climate change denial and rubbery non-commitments.

And the emissions trading scheme shows every sign of being ineffective in reducing carbon emissions - it is too complicated and won't price carbon enough to drive reductions.

We really need to get water, climate change and energy policy out of the political arena and in the hands of a taskforce who can really do something - before our politicians preside over the total collapse of our ecosystems, our climate and our economy.

Blaming the Howard government is just not good enough.

Links:

Thursday, June 26, 2008

The Brumby government has got it wrong on water

The Brumby government has announced their strategy for coping with the now chronic water shortage due to Victoria's greatly reduced rainfall.

Rainfall in the state has reduced 75% over the last ten years, which far exceeds the worst case predictions by the CSIRO when they modeled the effects of climate change.

It is therefore appropriate that the Victorian government take fairly urgent action to address this very serious issue that now impacts all Victorians. The question is, have they got the right strategies in place?

The government's Water Plan, also labeled as “Our Water Our Future” details the following key initiatives:

    1. A new desalination plant for Melbourne
    2. Modernising Victoria’s Food Bowl irrigation system to capture lost water for farms, the environment and Melbourne
    3. Expansion of Victoria’s Water Grid
    4. Upgrading Melbourne’s Eastern Treatment Plant to provide over 100 GL of recycled water in 2012 and assessing a range of alternative uses of this water
    5. Supporting new and existing water conservation programs for homes and industry.

    While elements of this plan seem reasonable, the projects arising out of it to date are highly questionable.

    The desalination plant

    The proposed desalination plant at Wonthaggi is supposed to provide 150 gigalitres of water per year – enough for one third of Melbourne's consumption. However, this plant will require 90 megawatts of power to run. This translates to 1 terawatt hour per year (1,000 gigawatt hours).

    The government has stated that they will source renewable energy for this, but there is significant risk that they won't be able to get enough.

    Premier John Brumby stated on ABC Radio 774 on 26 June 2008 that the desalination plant would cost less to install and use less energy than installing domestic rainwater tanks with electric pumps. The information he based this claim on appears to be incorrect. Calculations on domestic pumps supplying one million households indicated that they would only consume 365 gigawatt hours per year, less than half the amount required to power the desalination plant.

    More energy is also need to pump water from the desalination plant to Melbourne.

    Stopping logging in Melbourne's water catchments would yield about another 30 gigalitres per year.

    Modernising Victoria's irrigation system

    This $750 million project is part of a government water strategy, which would also modernise infrastructure in the region to save 225 billion litres of water now lost through evaporation, seepage and system inefficiencies.

    While replacing fixing leaks and water losses in irrigation infrastructure is a good thing, the Victorian government has announced a plan to pump water from the Goulburn River, which is in the water-deprived Murray Darling catchment, over the Great Dividing Range to Melbourne.

    The two glaring problems with this are:

    1. There is not enough water in the Goulburn River to take more out without critically endangering both the Goulburn and Murray Rivers.

    2. The water taken out, estimated to be 75 gigalitres, will be pumped over the Great Dividing Range to Melbourne, which will result in more carbon emissions

    Expansion of Victoria’s Water Grid

    The concept behind “expanding the water grid” is to provide interconnections between river systems and storages across the state of Victoria.

    The claimed benefits for this include:

    • Increase the security of water supplies by diversifying the sources of water available for communities connected by the Grid

    • Enable water to be traded more readily, by making it easier to transfer water to where it is most needed and valued

    • Increase the value of supply options (current and future) by increasing the flexibility and diversity of uses.
    • The expanded Victorian Water Grid will allow more water to be transferred between water systems.

    However, around 10,000km of expensive new pipeline is required to create this network.

    There are social equity issues with taking scarce water from rural areas to for Melbourne's domestic water supply.


    Environmental flows have not been provided to the Yarra River which flows through Melbourne, contrary to scientific recommendations and a previous government commitment. This environmental flow should be provided to ensure the health of the river.

    Carbon emissions are generated every time water pumped through a pipeline unless renewable energy is used for this.


    Upgrading Melbourne’s Eastern Treatment Plant to provide over 100 GL of recycled water in 2012 and assessing a range of alternative uses of this water

    This proposal is a good one. However, Melbourne produces around 320 GL of wastewater per year. Around 400ML per day is pumped out from Gunnamatta Beach outfall alone.

    The government should set a higher target for recycling water of at least 200GL, and eliminate ocean outfalls.

    Latrobe Valley power stations consume 140 billion litres (GL) of water per year, so recycled water could be used for this purpose rather than drinking water.

    Supporting new and existing water conservation programs for homes and industry

    This initiative is commendable. However, Melbourne's daily water usage is still quite high at 277 litres per person per day. A reduction to 150 litres per person per day is achievable, which would greatly reduce demand for water, and expensive new infrastructure to provide it.

    Summary

    The Brumby government has embarked on an expensive plan to address Victoria's water shortage, with a particular focus on ensuring Melbourne's water supply, with some severe impacts on rural areas resulting. In particular, the loss of water from the ailing Goulburn River, and the building of an energy hungry and polluting desalination plant at Wonthaggi will have major impacts to these regions.

    The entire Murray Darling River is now at risk. Rather than taking more water from the Goulburn River, increased environmental flows should be provided to both the Goulburn and Murray rivers.

    The $4.9b spending on these water projects will be passed onto Victorian taxpayers, with water bills increasing by about 15% already in 2008. It is projected that water prices will double by 2012 to pay for these projects.

    Simple proven measures to increase water supply by protecting water catchments from logging are being ignored.

    Melbourne's water supply needs would be better and more cheaply met by:

    • reducing water consumption through increased efficiency measures

    • stopping logging in water catchments

    • major investment in domestic water tank systems, which have the added advantage of being installed incrementally

    • harvesting, storing and using more of the 450 GL of storm water Melbourne loses per year

    • recycling at least 200GL of sewerage per year and stopping ocean outfalls.

    These initiatives can be funded from recurrent spending at cheaper rates (10%) than funds for giant projects such as the proposed $3b desalination plant (20%) under a Public Private Partnership.

    The other worrying aspect of the government's water strategy is the apparent lack of supporting information on how their decisions were made, and grossly inadequate public consultation during its development.

    The water strategy has been delivered as a fait accompli by government; they are not showing any signs of investigating lower risk and cheaper, more distributed alternatives.





    Thursday, April 19, 2007

    Murray Darling water and climate change are linked

    Prime Minister Howard’s warning today that no water would be available for irrigation in the Murray Darling Basis unless the drought breaks in the next eight weeks is an admission of serious Government policy and process failure.

    Howard and Turnbull’s recently announced 10 billion water reform package will not address primary causes of the drought such as climate change.

    Howard has repeatedly claimed that Australia cannot reduce carbon emissions or coal exports because it will affect our level of income and standard of living. He is terribly wrong – the reverse is the case.

    Ignoring climate change and refusing to address it has now exposed Australia to the very real risk that our food production will be greatly compromised due to lack of water. The Murray Darling Basin provides about 40 percent of Australia’s food production, and relies very heavily on irrigation. If the drought continues, many farmers and rural towns will go broke, and food prices will rise for everyone, which will have a major impact on both incomes and lifestyles.

    We cannot afford to have short-term partisan political imperatives compromising our environment and our collective future. Warnings by scientists of an impending crisis have been ignored for over three decades.

    We need a vision, long term planning and new approaches for sustainable living. A dedicated taskforce of scientists and community representatives is required to address the technical and social factors outside of the political arena.

    Links
    Irrigation levels at 'dangerous' lows, warns PM

    This was published as the lead letter in The Weekend Australian on April 21-22, titled "An empty Murray is a result of policy and process failure"