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  • Murray Darling Basin Plan - Lakes Need Water
    released in the year 2000 for the Murray Darling Basin Commission A few excerpts below are from this report and clearly acknowledge that the Lower Lakes were once part of a much larger estuary that included the Coorong Separating the Coorong from the Lower Lakes with the barrages has caused all kinds of environmental problems that were known ten years ago From page 10 Key Issues The Scientific panel identified four key issues driving the serious degradation of environmental values in the Lower Lakes and Coorong These are the reduced area of the estuary changed water regimes of the lakes and river freshening of brackish and saline habitats reduced habitat for aquatic plants The first two issues are the most significant in terms of their impact and their influence in driving the other key issues From page 43 The reduction in the size of the estuary has reduced the size of the tidal prism by around 90 of its original pre barrage size In 1914 the lake area affected by tides was 97 3 km2 75 000 hectares with a spring tidal prism of 20 000 ML Walker 1990 These figures indicate that the original tidal prism produced a twice daily exchange of similar magnitude to the flows of 20 000 ML day for a month or more which would now be required to substantially clear the mouth of accumulated deposition Harvey 1988 From page 44 Opportunities for Improvement Options for rehabilitation measures to address the key geomorphological issues Long Term Enlarge the diversity of habitat in the estuary by increasing the size of the tidal prism and the flushing effects of tides at the mouth An option for management is to relocate the barrage system to Wellington or to Pt Sturt Pt McLeay From page 62 Ecological Needs The

    Original URL path: http://www.lakesneedwater.org/murray-darling-basin-plan (2016-02-09)
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  • Mandurah Photos - Lakes Need Water
    The 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 Maps Peel Harvey Estuary Mandurah Photos Photos of Mandurah Western Australia by Steve

    Original URL path: http://www.lakesneedwater.org/maps/peel-harvey-estuary/mandurah-photos (2016-02-09)
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  • Regulator Updates - Lakes Need Water
    the remaining units should be pumping by the middle of next week Most of the water in the Goolwa channel to date is as a result of runoff from the Finniss River and to a lesser degree Currency Creek 5 September 2009 Photos of the progress on the Currency Creek Regulator 16 August 2009 Photos of the finished Clayton Regulator 10 August 2009 Photos of the Currency Creek regulator 9 August 2009 Photos of the Clayton Regulator 1 August 2009 Currency Creek regulator back under construction this time with sand 31 July 2009 Clayton regulator information and photos Lateline video on the Clayton regulator 21 July 2009 Signs recently erected by the DEH have been vandalised 20 July 2009 In an interview on 891 Morning today click here 15 July 2009 The latest news reaching LakesNeedWater this morning is that the Currency Creek and Finniss regulators have been abandoned click here 17 June 2009 News release from the office of Hon Karlene Maywald 17 June 2009 Construction of Goolwa regulators starts this week Extracted from the document above Public information sessions outlining the construction schedule and details will be held this Thursday June 18 at the Clayton Bay Community Hall

    Original URL path: http://www.lakesneedwater.org/regulators (2016-02-09)
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  • Bioremediation - Lakes Need Water
    beds and these are increasing in area daily as we move on into late summer without rain in the catchment and soaring temperatures exacerbating the evaporation River Murray levels at Murray Bridge on February 13 2008 were 1 3m below sea level The amount of lime that would be needed even now let alone in the future when the exposed areas are likely to be much greater would be enormous and probably only treat the top few cm of soil leaving the sulphides in the metres o f sediment below untreated and waiting to be oxidized should there be an event that kills the plants eg extreme heat or lack of rain The actual process of spreading the lime would be a huge job and very expensive Also to be considered is the process o f production of lime which is formed by heating limestone releasing carbon dioxide to leave the calcium oxide It is therefore an energy intensive process and greenhouse unfriendly Seeding the soils depends on the availability of correct species of seed in huge quantities Where will this come from how soon can it be obtained and how much will it cost Collecting seed for revegetation is

    Original URL path: http://www.lakesneedwater.org/debate/bioremediation (2016-02-09)
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  • Bio-remediation, 15 June 2009 - Lakes Need Water
    Act Now Remediation Journal Bio remediation 15 June 2009 Currency Creek 15 June 2009 Photos taken near The Narrows Currency Creek SA by Ken Jury The initial limestone trials that involved placing mounds of limestone across the lakebeds have proven successful to neutralise small amounts of acid that were mobilised in parts of the Finniss River but are too slow to deal with the scale of the problem we are

    Original URL path: http://www.lakesneedwater.org/remediation-journal/bioremed15June (2016-02-09)
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  • Bio-remediation 12 June Finniss River - Lakes Need Water
    Letters and Submissions More Reading Maps About Us Links Act Now Remediation Journal Bio remediation 12 June Finniss River Near Wally s Landing on the Finniss River SA 12 June 2009 photos taken by Ian Rowen Where the Finniss River

    Original URL path: http://www.lakesneedwater.org/remediation-journal/bio-remed12junefinniss (2016-02-09)
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  • Bio-remediation, 1 June 2009 - Lakes Need Water
    Now Remediation Journal Bio remediation 1 June 2009 Currency Creek 1st June 2009 Machinery possibly amphibious involved with initial work to the Currency Creek regulator A small barge is nearby B oth units are close to the nearby historic Mill on the northern side Top left A shallow crushed limestone embankment over acid sulphate soils Authorities say that future flows will spread the limestone and treat the acid soils Top

    Original URL path: http://www.lakesneedwater.org/remediation-journal/bio-remed1June (2016-02-09)
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  • Bio-remediation, 22nd May 2009 - 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 Remediation Journal Bio remediation 22nd May 2009 Currency Creek A semi attached unloading limestone

    Original URL path: http://www.lakesneedwater.org/remediation-journal/may-22-2009 (2016-02-09)
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