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  • Bio-Remediation, May 21 2009 - Lakes Need Water
    each time traveling from the dumped source in a side street in Nth Goolwa to about a km or more out to the spreading site on the western edge of the 2 3km wide Currency floodplain It is estimated 600 tonnes overall is needed in the Currency Creek and Finniss River areas The shallow mounds of crushed limestone are only about two meters wide and in some instances 30 50cm high It is being placed across depressions in the bed of the system selected by DEH The depressions are many hundreds of meters apart again leading to the question of how much water do they expect down the Currency system to spread it out And how much do they believe these small mounds will cover when spread In addition to the limestone dumping aerial seeding of approximately 5000 hectares around the barrage islands in Lake Alexandrina and exposed areas in Goolwa Channel has started click on any photo for a larger view Locals are referring to the dropping of rye grass seed as planting the lawn The drivers try to select a new path out and in for every trip Thats because first time over the spongy muds and silt

    Original URL path: http://www.lakesneedwater.org/remediation-journal/bio-remedmay21 (2016-02-09)
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  • Bio-remediation - Lakes Need Water
    the Lower Lakes 18th of May 2009 Currency Creek click on any photo to enlarge A home test kit shown here provides an indication while an official test on the same day in the same area produced a Ph level of 2 75 Acid bearing pyrite rich acid soil on the surface of lower Currency Creek Crushed limestone introduced as a measure to contain acid sulphate soils These mounds of

    Original URL path: http://www.lakesneedwater.org/remediation-journal/bio-remediation (2016-02-09)
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  • Capt Sturt's Journal - Lakes Need Water
    journal the water as he approached Lake Alexandrina at Pomanda Point in 1830 Sturt writes Thus far the waters of the lake had continued sweet but on filling a can when we were abreast of this point it was found that they were quite unpalatable to say the least of them The transition from fresh to salt water was almost immediate and it was fortunate we made the discovery in

    Original URL path: http://www.lakesneedwater.org/feature/capt-sturt-s-journal (2016-02-09)
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  • The Idea of a Freshwater driven Estuary - Lakes Need Water
    of habitats and shallow areas around the edges Estuaries being near sealevel ranging with freshwater and with tidal influences Estuaries are very productive ecosystems In fact they are the second most productive type of ecosystem when measured by diversity quantity and resiliency of the lifeforms it supports With an estuary water levels would be lower than typical Lake Alexandrina and Goolwa full pool levels 75AHD and closer to sealevel Users around the lakes would need to adapt to changing water levels for recreation How much freshwater do we need Dr Geddes discussed historic water levels and flows He said the river had been getting 10 000 GL instead of the small amounts of late Also that the flows down the river can vary a lot Estuarine health involves large volumes of water but not steady volumes How much water should end of the river get What s natural Dr Geddes said that 40 of river flow is what SA should get through to the Murray Mouth or to the end of the system The amount will vary between dry and wet years What sort of salinity would we see in the estuary All areas of the estuary should be connected with recent regulators removed A better connection to the ocean and up through barrages is needed The barrages should introduce fish passage SA should manage barrages differently and make them transparent Improve connectivity between all parts of the system He then discussed what he calls the Virtual Weir and explained how it would work With enough freshwater coming down the river the seawater would be kept out It should be easy to work out what flows are needed to prevent incursion of salt water We could also modify water channels to help water flows protect the fresh water needed for

    Original URL path: http://www.lakesneedwater.org/letters/The-Idea-of-a-Freshwater-driven-Estuary (2016-02-09)
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  • French Visit - Lakes Need Water
    based hovercraft on Lake Alexandrina where they were able to reach several highly acidified locations to be studied and filmed Travel by hovercraft to reach the hard to access locations on Lake Alexandrina The crew interviewed Garry Hera Singh of Meningie at his commercial fishing patch in the Coorong south of Tauwichere barrage The dramatic contrast from the elevated position near the barrage looking down at the pristine blue waters of the Coorong on one side while on the other a highly acidified orange coloured putrid sometimes dry lake bed was to say the least striking It made an impression on the French In between interviews Garry soon produced an unforgettable picture of the Coorong and what it stands for by catching a few Coorong mullet These were deftly filleted By now we realised that this was an integral part of the Garry show because what happened next is what he enjoys as a commercial fisher every day of his life Literally dozens of pelicans seemed to immediately materialise from nowhere They moved in close to the filleting table for the inevitable morsels while nearby Garry s fishing boat gently tugged at its moorings in a slight breeze while the sound of these majestic birds endured This was picture book viewing at its best and the cameraman new it Ken Jury said With fillets prepared everyone adjourned into Garry s one room fisherman s shack where the catch was cooked and served on a dinner plate to all A coffee to round off and the journey continued The French team will have lasting memories and no less are my memories of how captivating the upper Coorong can be for its visitors At nine on the following morning the film crew met with a representative from the Department of Water Land Biodiversity Conservation to be escorted onto the temporary Clayton regulator The controversial 250 000 tonne earthen structure spanning the river between Clayton Bay and Hindmarsh Island was built to contain water in the downstream Goolwa Channel and to control acid in the Currency Creek and Finniss River tributaries of Lake Alexandrina Three huge pumps sit atop the regulator to shift 530 mega litres of Lake Alexandrina water into the Goolwa Channel every day The pumps will stop when 27 5 gigalitres have been pumped into the channel French tv interviews Ken Jury at the Clayton Regulator During the interview with the French reporter Richard Brown from the department said that four to five centimetres of water would be pumped from the top of Lake Alexandrina during the exercise Previous modelling showed that the Goolwa Channel would have been naturally cut off from the lake this summer due to evaporation Brown said The Goolwa channel level below the regulator has risen by about 1 6 metres in recent weeks Much is the pity that water levels in the lower River Murray are not increasing Having next journeyed to Sturt reserve near Murray Bridge it soon became apparent to the French team

    Original URL path: http://www.lakesneedwater.org/letters/french-visit (2016-02-09)
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  • ABC Landline, 18 Oct 2009 - Lakes Need Water
    Submissions More Reading Maps About Us Links Act Now Videos ABC Landline 18 Oct 2009 Lakes Need Water members interviewed by Prue Adams on ABC Landline 18 Oct 2009 The video Opportunity Crops deals primarily with bioremediation efforts related to

    Original URL path: http://www.lakesneedwater.org/videos/landline-18-oct-2009 (2016-02-09)
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  • Page not found - Lakes Need Water
    for an Estuary Lower Lakes Facts Vision Statement The Barrages Photo Gallery Latest News Letters and Submissions More Reading Maps About Us Links Act Now Untitled Untitled Page not found We re sorry but we were unable to locate the

    Original URL path: http://www.lakesneedwater.org/system/errors/NodeNotFound?suri=wuid:gx:1606b85c1c011f6f (2016-02-09)
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  • Lakes Did Contain Salt - Lakes Need Water
    Case for an Estuary Lower Lakes Facts Vision Statement The Barrages Photo Gallery Latest News Letters and Submissions More Reading Maps About Us Links Act Now Latest News Lakes Did

    Original URL path: http://www.lakesneedwater.org/media/lakes-did-contain-salt-28-march-2009 (2016-02-09)
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