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Stats: 1077156 members, 1265816 topics. Date: Thursday, 20 June 2013 at 09:23 AM
|Africa Will Be The Site Of Water Wars by Nebeuwa(m): 2:31pm On Apr 22, 2012|
I believe Africa will be the site of water wars in the near future as countries around the world who are in need of this precious resource will flock to the continent and extract this resource which will be worth its weight in gold.
'Huge' water resource exists under Africa
By Matt McGrath
Science reporter, BBC World Service
Scientists say the notoriously dry continent of Africa is sitting on a vast reservoir of groundwater.
They argue that the total volume of water in aquifers underground is 100 times the amount found on the surface.
The team have produced the most detailed map yet of the scale and potential of this hidden resource.
Writing in the journal Environmental Research Letters, they stress that large scale drilling might not be the best way of increasing water supplies.
Across Africa more than 300 million people are said not to have access to safe drinking water.
Demand for water is set to grow markedly in coming decades due to population growth and the need for irrigation to grow crops.
Freshwater rivers and lakes are subject to seasonal floods and droughts that can limit their availability for people and for agriculture. At present only 5% of arable land is irrigated.
Now scientists have for the first time been able to carry out a continent-wide analysis of the water that is hidden under the surface in aquifers. Researchers from the British Geological Survey and University College London (UCL) have mapped in detail the amount and potential yield of this groundwater resource across the continent.
Helen Bonsor from the BGS is one of the authors of the paper. She says that up until now groundwater was out of sight and out of mind. She hopes the new maps will open people's eyes to the potential.
"Where there's greatest ground water storage is in northern Africa, in the large sedimentary basins, in Libya, Algeria and Chad," she said.
"The amount of storage in those basins is equivalent to 75m thickness of water across that area - it's a huge amount."
Due to changes in climate that have turned the Sahara into a desert over centuries many of the aquifers underneath were last filled with water over 5,000 years ago.
The scientists collated their information from existing hydro-geological maps from national governments as well as 283 aquifer studies.
The researchers say their new maps indicate that many countries currently designated as "water scarce" have substantial groundwater reserves.
However, the scientists are cautious about the best way of accessing these hidden resources. They suggest that widespread drilling of large boreholes might not work.
Dr Alan MacDonald of the BGS, lead author of the study, told the BBC: "High-yielding boreholes should not be developed without a thorough understanding of the local groundwater conditions.
"Appropriately sited and developed boreholes for low yielding rural water supply and hand pumps are likely to be successful."
With many aquifers not being filled due to a lack of rain, the scientists are worried that large-scale borehole developments could rapidly deplete the resource.
[b]To Read More See: [/b]http://www.bbc.co.uk/news/science-environment-17775211
|Re: Africa Will Be The Site Of Water Wars by antartica(m): 3:59pm On Apr 22, 2012|
The 21st century scramble for africa is for real.It is already happening in our very eyes as if africans are living dead.The chinese and indians are creeping in like locusts,while the europeans and americans are hanging on strongly to their strongholds and wanting more.
And as always the unfortunate african children suffers in the midst of bleak future.
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