21 Apr '12, 8am

Groundwater resources in Africa mapped | - #Africa #groundwater #water #watersupply #boreholes #drought

Groundwater resources in Africa mapped | - #Africa #groundwater #water #watersupply #boreholes #drought

Groundwater storage for Africa based on the effective porosity and saturated aquifer thickness. Panel (a) shows a map of groundwater storage expressed as water depth in millimetres with modern annual recharge for comparison. Panel (b) shows the volume of groundwater storage for each country; the error bars are calculated by recalculating storage using the full ranges of effective porosity and thickness for each aquifer, rather than the best estimate. Annual renewable freshwater availability, (calculated by the FAO in 2005) generally used in water scarcity assessments is shown for comparison; Credit: IOP Science/Environmental Research Letters

Full article: http://www.earthtimes.org/scitech/groundwater-resources-a...

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