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Irrigate central Australia ............ (Read 4373 times)
Sprintcyclist
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Re: Irrigate central Australia ............
Reply #45 - Jan 17th, 2018 at 9:26am
 
Prime Minister for Canyons wrote on Jan 17th, 2018 at 9:04am:
Sprintcyclist wrote on Jan 16th, 2018 at 9:06pm:
What would you do with it ?




LEave it. Work on increasing the efficiency of our current farming land.


thanks for a meaningful answer.


will the current salination problem spread unless  addressed ?
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Re: Irrigate central Australia ............
Reply #46 - Jan 17th, 2018 at 9:32am
 
Sprintcyclist wrote on Jan 17th, 2018 at 9:26am:
Prime Minister for Canyons wrote on Jan 17th, 2018 at 9:04am:
Sprintcyclist wrote on Jan 16th, 2018 at 9:06pm:
What would you do with it ?




LEave it. Work on increasing the efficiency of our current farming land.


thanks for a meaningful answer.


will the current salination problem spread unless  addressed ?


It is being addressed.
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In a time of universal deceit — telling the truth is a revolutionary act.

No evidence whatsoever it can be attributed to George Orwell or Eric Arthur Blair (in fact the same guy)
 
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Re: Irrigate central Australia ............
Reply #47 - Jan 17th, 2018 at 9:47am
 
that's good news.

do you know what is being done about it and by who ?
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Re: Irrigate central Australia ............
Reply #48 - Jan 17th, 2018 at 10:26am
 
Government scientists etc.
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lee
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Re: Irrigate central Australia ............
Reply #49 - Jan 17th, 2018 at 11:02am
 
So will irrigating Central Australia bring any salt there to the surface?
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Re: Irrigate central Australia ............
Reply #50 - Jan 17th, 2018 at 11:17am
 
lee wrote on Jan 17th, 2018 at 11:02am:
So will irrigating Central Australia bring any salt there to the surface?




I couldnt say for certain, but I would assume so.
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Re: Irrigate central Australia ............
Reply #51 - Jan 17th, 2018 at 11:59am
 
could be a problem still happening.

Quote:
.............Impacts by state[edit]
New South Wales[edit]
Currently 5% of New South Wales is affected by dry land salinity, and around 50% is under threat.[9] 15% of current irrigated land is impacted, and up to 70% is currently under threat.[9] The main regions currently affected, and at high risk, are The Murrumbidgee River catchment near Griffith, and Jemalong River Catchment near Forbes, as well as the Murray River irrigation area near Deniliquin.[9]

Victoria[edit]
The current levels of salinity in Victoria are relatively small, with the main impact expected to occur in high risk areas in the coming years. These high risk areas include the Campaspe, Loddon, Corangamite, Glenelg-Hopkins, Goulburn-Broken catchments, and Wimmera and Mallee regions.[10] The current cost to Victoria is estimated at $50million per year. This is expected to rise significantly with the impacts on agricultural land, wetlands and infrastructure in high risk areas to increase, mainly in part to an anticipated 10 fold increase in salt levels by 2050.[9]

Western Australia[edit]
Western Australia contains the majority of land affected by salinity in Australia, with around 70%. Over 2 million hectares are currently affected, and around 4 million hectares of land are currently listed as high risk, and 50% of divertible water is already considered overly saline.[9] Around 450 plant species are endemic to areas that are at high risk of salinisation[11] 75% of water bird species in decline, a 75% reduction in sealed road life, and $400million in lost profits.[9]

South Australia[edit]
Salinity in South Australia is a problem in all principal agricultural areas, with 370000 hectares of land and wetlands impacted. At current rates, this is expected to increase by 60% by 2050.[12] It is expected to cost the state around $47million per year in lost agricultural profit, and is expected to taint more than 20% of ground water to levels above those safe for human consumption.[9]

Tasmania[edit]
Tasmania is relatively unaffected by salinity, with around 1% of agricultural land, and 8% of farm land adversely affected by salt, resulting in a current cost to the state of around $5million per year, rising to around $13million by 2050. The majority of this salinity is irrigation based.[9]

Queensland[edit]
Queensland is the least affected state of Australia, due to its unique seasonal rainfall. Around 15000 hectares are currently affected, with 3.1million hectares considered highrisk.[9] At current rates however, salinity is predicted to have moderate scale impacts on land and infrastructure by 2050, with 12,000 km of roads, 1500 km of rail lines, and around 2.8million hectares of agricultural land, remnant vegetation, and wetlands and streams negatively affected[13]............

............. The final report for the NAPSWQ states that ‘With few exceptions the massive efforts involved in delivering NAPSWQ and NHT programs have at best halted the degradation of these resources. This has reinforced the view of the State of Environment (SoE) Report that concluded that the condition of these resources continues to decline despite the best efforts of the community and government'.[18].............


https://en.wikipedia.org/wiki/Salinity_in_Australia


yep, seems a problem
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Re: Irrigate central Australia ............
Reply #52 - Jan 17th, 2018 at 12:11pm
 
he Murrumbidgee River catchment near Griffith, and Jemalong River Catchment near Forbes, as well as the Murray River irrigation area near Deniliquin



And what do these three areas have in common?
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Re: Irrigate central Australia ............
Reply #53 - Jan 17th, 2018 at 12:40pm
 
they are all in NSW
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Re: Irrigate central Australia ............
Reply #54 - Jan 17th, 2018 at 5:29pm
 
So will irrigating Central Australia bring any salt there to the surface?

There are two main ways to  make saline soils.

If there is an underlying saline water table and you raise that water table (most of Australia's problem)

OR

If your irrigation water is ever so saline and you can not flush and drain the soil the salt will build up.

In Carnarvon WA they have to monitor the salt levels in irrigation water very closely and stop using it if the salinity builds up. There is bugger all rain and also poor drainage means you can bugger up the soil with irrigation.
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Re: Irrigate central Australia ............
Reply #55 - Jan 18th, 2018 at 9:22am
 
miketrees wrote on Jan 17th, 2018 at 5:29pm:
So will irrigating Central Australia bring any salt there to the surface?

There are two main ways to  make saline soils.

If there is an underlying saline water table and you raise that water table (most of Australia's problem)

OR

If your irrigation water is ever so saline and you can not flush and drain the soil the salt will build up.

In Carnarvon WA they have to monitor the salt levels in irrigation water very closely and stop using it if the salinity builds up. There is bugger all rain and also poor drainage means you can bugger up the soil with irrigation.



I agree with that
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Re: Irrigate central Australia ............
Reply #56 - Jan 18th, 2018 at 6:41pm
 
Only 1 Party had policies contained in a platform called WATERING AUSTRALIA.
The Greens...  nope
The Libs... Nope
The ALP... nope
The Nationals... nope...
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Re: Irrigate central Australia ............
Reply #57 - Jan 19th, 2018 at 8:35pm
 
...

Lake Mackay
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Re: Irrigate central Australia ............
Reply #58 - Jan 19th, 2018 at 8:41pm
 

...

and this map
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Re: Irrigate central Australia ............
Reply #59 - Jan 19th, 2018 at 8:47pm
 
and this thought .........

miketrees wrote on Jan 17th, 2018 at 5:29pm:
So will irrigating Central Australia bring any salt there to the surface?

There are two main ways to  make saline soils.

If there is an underlying saline water table and you raise that water table (most of Australia's problem)


OR

If your irrigation water is ever so saline and you can not flush and drain the soil the salt will build up.

In Carnarvon WA they have to monitor the salt levels in irrigation water very closely and stop using it if the salinity builds up. There is bugger all rain and also poor drainage means you can bugger up the soil with irrigation.


So we could initially lower the water table level.

Lake torrens is 30M above sea level.
about 200 + kms from the ocean.

draw underground watertable water from there, pump it to the ocean in  SA.

we have a 30m M drop. Which is lot better that a 30M rise over 200 kms
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« Last Edit: Jan 19th, 2018 at 9:44pm by Sprintcyclist »  

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