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  • A very good fishery, 20 April 2009 - Lakes Need Water
    bracking as a boy in the 30 s He used to catch mullet school mullaway etc in the viaduct pool above the old Currency Creek bridge The Murray Darling has dried completely during my family s time line of holding lands on this river system In the late 1800 s driving cattle etc along the dry Murray Darling the lakes were always salt brackish Surely the real environmental issue was

    Original URL path: http://www.lakesneedwater.org/letters/seawater-fishery-20-april-2009 (2016-02-09)
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  • The Times, 9 April 2009 - Lakes Need Water
    is shocking that the water that could protect and restore it the River Murray is not being released for political reasons But this outrageous statement is probably not entirely her fault as she would have believed what she was told by her hosts the River Lakes and Coorong Action Group I wonder if they told her about the drought At the end of March the total water held in the major upstream storages for all purposes was only 1 161 gigalitres and it does not take a rocket scientist to consider the area of the Lower Lakes and calculate how much water is needed to raise the water level to their pre drought condition somewhere near 1 300 gigalitres If this last available water had been released months ago only some of it would be here now the lakes would be half full but with levels still falling all irrigation would have ceased and towns and cities across NSW Victoria and South Australia would have run dry Now that would be shocking and if the drought continues it may yet happen Ms Barlow also said The construction of weirs dams and desalination plants is the worst set of solutions possible

    Original URL path: http://www.lakesneedwater.org/letters/the-times-9-april-2009 (2016-02-09)
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  • Advertiser, 4 March 2009 - Lakes Need Water
    across the exposed lake bed towards my home one thing is very clear to me Those who argue against opening the barrages to let seawater take its natural place are arguing in support of the environmental disaster that is happening out there right now because there are no other alternatives The seawater remedy is available immediately but without it conditions will worsen as water levels continue to fall and this

    Original URL path: http://www.lakesneedwater.org/letters/advertiser-4-march-2009 (2016-02-09)
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  • Southern Argus, 12 February 2009 - Lakes Need Water
    overlook difficult facts but for an experienced politician to ignore readily available data and to perpetuate myths for his own political gain is highly irresponsible and in my view a disgrace These lakes are very large and it would take eight Gigalitres to raise their level by a mere one centimetre With Lake Alexandrina about a metre below sea level and falling fast Mr Brokenshire is telling us that a

    Original URL path: http://www.lakesneedwater.org/letters/southern-argus-12-feb-2009 (2016-02-09)
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  • Sunday Mail, Feb 2009 - Lakes Need Water
    who think there is a fresh water solution have not checked the facts There is currently around 1850GL in active storage in the Murray Darling Basin In July 2006 Lake Alexandrina held 1600GL and Lake Albert 280GL now they hold 940GL and 100GL so just to return to 2006 levels would require 800GL Most experts claim only 20 percent of upstream water released will reach the lakes so 4200GL would

    Original URL path: http://www.lakesneedwater.org/letters/sunday-mail-feb-2009 (2016-02-09)
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  • Seawater flows - Lakes Need Water
    travel at that speed eg 5km in one hour Therefore in a channel 1km wide and 1 metre deep 5 gigalitres would have passed a given point in one hour These figures can be adjusted to suit for example a fifth of a km 200 metres by 1 metre deep would result in 1 gigalitre passing by at 5km hour However the tide only rises for 6 hours Therefore from half way up on a rising tide to halfway down takes in the period of six hours total at the upper half of the tide The other half of the tide is halfway down through the bottom of the tide to half way up again so there is only about 6 hours of tide pushing available in each 12 hours Six hours at the 5km hour equals 30km distance But we have already said in our scenario that the upper or Northern Lagoon of the Coorong is 50km long and therefore the water doesn t quite reach the end In truth though only the top 2 hours either side of high tide would be still high enough to maintain the flows in at 5km per hour The balance is slowing down So it didn t make it much past the halfway mark down the North Lagoon on a single tide even if the mouth area had been wide and deep It s too long and narrow and a little like tipping a bucket of water out into a gutter where it takes a while to move along But if it s long and narrow then the wind will also push it along In the North Lagoon scenario it does When the wind blows from the north west over a period of about two days it tends to hold incoming high tide water in the North Lagoon by pushing it down towards Hells Gates where it holds it while the particular wind prevails often over several days The levels at Hells Gates rise and some of the flow manages to squeeze through the much reduced and very narrow channel of here The NW wind then holds the water against a falling tide and slows its escape through the mouth When SE winds blow the other way around Northern Lagoon water is then blown towards the mouth where some is expelled on outgoing tides In real terms the health of the Southern Lagoon of the Coorong was previously maintained by contributions of freshwater as seasonal flows from the South East through Salt Creek mixing with the tides from North Lagoon Sadly for many years the S E drainage scheme has denied the Coorong of this freshwater injection Rehabilitation of the Coorong can therefore be achieved by restoration of the South Lagoon freshwater flows and with manipulation of tidal flows from areas fronting the Tauwitchere barrage to the Murray Mouth region to clear unwanted silt currently restricting the system River Murray freshwater has never contributed significantly to the Coorong s health which means

    Original URL path: http://www.lakesneedwater.org/vision/seawater-flows (2016-02-09)
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  • Loveday Bay - Lakes Need Water
    an area adjacent to Lake Alexandrina Scientists have identified the acidic water in Loveday Bay in the southern region of the lake Testing by the Environment Protection Authority found pH levels of less than 3 Loveday Bay showing iron precipitate at pH 2 3 The Courier reports that Acidic water strong enough to dissolve mussel shells has been discovered Click here for a map of the exact location of Loveday Bay For comparison purposes 200 hectares is approximately 1km by 2km in area Another site further up the river where the acid problem got out of control is at Bottle Bend Lagoon View our information page on Bottle Bend Lagoon here Review the CSIRO acid soils map of the Lower Lakes 2MB showing the extent of acid sulfate soils in the region at 1 5 AHD See the sidebar at left for current AHD levels The diagrams below from the latest CSIRO report 4MB show the extent of ASS soils to be exposed at varying AHD levels Current water levels in Lake Alexandrina are now lower 0 69m AHD in lateAugust 2009 than the 0 5m AHD in the middle map labelled as current and have been lower earlier in

    Original URL path: http://www.lakesneedwater.org/remediation-journal/Loveday-Bay (2016-02-09)
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  • Lake Albert - Lakes Need Water
    Lake Albert to inundating it with seawater Government plans on what to do about Lake Albert have varied from pumping to drying out to back to pumping water again from Lake Alexandrina Read the October 2009 community update Check this page for current water levels of Lake Albert Governmental plans have probably changed as a result of the conditions at Loveday Bay A recent government decision to stop pumping water to Lake Albert and instead allow it to dry out is wrong Especially when there are economic and environmentally sustainable alternatives available There are various ideas that can be explored One is to utilize existing drains as explained here Another is for Lake Albert to be connected to an adjacent Ramsar site the Coorong or even possibly the sea Here is the latest government information on Lake Albert To allow Lake Albert to dry out is in breach of the Ramsar convention charter which intends to preserve nominated wetlands by whatever means possible Read more about the Ramsar and Lake Albert The town of Meningie which is on Lake Albert is suffering Read this article Receding lakes leaves town high and dry and this one Stopping the pumping of water

    Original URL path: http://www.lakesneedwater.org/lake-albert (2016-02-09)
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