DesiGuy
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ELIZABETH JACKSON: There's been speculation for some time that future wars will be fought over water.
Now a study published in the journal Nature has raised concern that the issue of water resources could make India's already-fraught relationship with Pakistan even worse.
The NASA study shows that aquifers in north-western India, bordering Pakistan, are being depleted at a much greater rate than they're being replenished.
Carly Laird reports.
CARLY LAIRD: India's north-western region is known as the country's breadbasket. And if the rate of groundwater depletion there is anything to go by, there's a lot of food production happening.
Matt Rodell is a hydrologist at NASA's Goddard Space Flight Centre in the United States. He and his colleagues have been using satellites to determine how much water is being depleted from below the Earth's surface.
MATT RODELL: One of the places that stands out is north-western India, where there's sort of a bullseye of red, where red is like a decrease in water storage.
And so we knew that north-western India has had issue with using too much groundwater and peoples' wells going dry and people needing to find clean sources of water.
We also knew that that was one of the most heavily irrigated areas of the world for cropland irrigation, so our hypothesis was that the groundwater's being depleted due to pumping for irrigation and so we decided to take a little closer look.
CARLY LAIRD: They found that between 2002 and 2008, the north-western region of India had lost over 100 cubic kilometres of groundwater. That's double the capacity of India's surface water reservoir.
MATT RODELL: And we know that the really heavy irrigation of the land began in the 1960s when they had what they called a green revolution, where they tried to increase agricultural output by using Western agricultural practices such as irrigation and synthetic fertilisers.
CARLY LAIRD: And he sees this as a potential problem for India's north-western neighbour.
MATT RODELL: Potentially if India's using a lot of water and drawing down the water table and it affects Pakistan, that could irritate the tensions that are already there.
CARLY LAIRD: Water is something that's already been a source of conflict between the two countries. Dr Sandy Gordon is a Professor at the ANU's Centre of Excellence in Policing and Security.
SANDY GORDON: India has built an enormous hydro dam on the Chennai River. Now Pakistan claims that this has drastically reduced the flow of the river and Pakistani farmers are saying that this also depleted the surrounding groundwater.
So this has become a serious cause for concern between India and Pakistan.
CARLY LAIRD: And he thinks the problem could escalate.
SANDY GORDON: As water is depleted in recent years I think it's going to come much more to the fore in terms of its sources of tension between the two.
CARLY LAIRD: But hydrologist and NASA scientist, Matt Rodell, argues the Indian Government should actively try to prevent conflict from arising by encouraging farmers to change their practices.
MATT RODELL: Rice is one of the major crops in this region and rice requires a huge amount of water to grow. They could also try to implement more efficient irrigation techniques.
AM - Potential for water conflict between India and Pakistan 15/08/2009
Now a study published in the journal Nature has raised concern that the issue of water resources could make India's already-fraught relationship with Pakistan even worse.
The NASA study shows that aquifers in north-western India, bordering Pakistan, are being depleted at a much greater rate than they're being replenished.
Carly Laird reports.
CARLY LAIRD: India's north-western region is known as the country's breadbasket. And if the rate of groundwater depletion there is anything to go by, there's a lot of food production happening.
Matt Rodell is a hydrologist at NASA's Goddard Space Flight Centre in the United States. He and his colleagues have been using satellites to determine how much water is being depleted from below the Earth's surface.
MATT RODELL: One of the places that stands out is north-western India, where there's sort of a bullseye of red, where red is like a decrease in water storage.
And so we knew that north-western India has had issue with using too much groundwater and peoples' wells going dry and people needing to find clean sources of water.
We also knew that that was one of the most heavily irrigated areas of the world for cropland irrigation, so our hypothesis was that the groundwater's being depleted due to pumping for irrigation and so we decided to take a little closer look.
CARLY LAIRD: They found that between 2002 and 2008, the north-western region of India had lost over 100 cubic kilometres of groundwater. That's double the capacity of India's surface water reservoir.
MATT RODELL: And we know that the really heavy irrigation of the land began in the 1960s when they had what they called a green revolution, where they tried to increase agricultural output by using Western agricultural practices such as irrigation and synthetic fertilisers.
CARLY LAIRD: And he sees this as a potential problem for India's north-western neighbour.
MATT RODELL: Potentially if India's using a lot of water and drawing down the water table and it affects Pakistan, that could irritate the tensions that are already there.
CARLY LAIRD: Water is something that's already been a source of conflict between the two countries. Dr Sandy Gordon is a Professor at the ANU's Centre of Excellence in Policing and Security.
SANDY GORDON: India has built an enormous hydro dam on the Chennai River. Now Pakistan claims that this has drastically reduced the flow of the river and Pakistani farmers are saying that this also depleted the surrounding groundwater.
So this has become a serious cause for concern between India and Pakistan.
CARLY LAIRD: And he thinks the problem could escalate.
SANDY GORDON: As water is depleted in recent years I think it's going to come much more to the fore in terms of its sources of tension between the two.
CARLY LAIRD: But hydrologist and NASA scientist, Matt Rodell, argues the Indian Government should actively try to prevent conflict from arising by encouraging farmers to change their practices.
MATT RODELL: Rice is one of the major crops in this region and rice requires a huge amount of water to grow. They could also try to implement more efficient irrigation techniques.
AM - Potential for water conflict between India and Pakistan 15/08/2009