Applied Groundwater Studies in Africa: IAH Selected Papers by Segun Adelana, Alan MacDonald

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By Segun Adelana, Alan MacDonald

Groundwater is Africa’s Most worthy normal source, offering trustworthy water provides for lots of people.  additional improvement of groundwater assets is prime to expanding entry to secure water around the continent to fulfill assurance ambitions and decrease poverty. there's additionally an expanding curiosity within the use of groundwater for irrigated agriculture because the weather turns into extra variable.  Sustainable improvement of the source isn't a trivial activity and relies crucially on an realizing of the hydrogeology and other people with the talents to make educated judgements on how groundwater can top be built and controlled in a sustainable style. regardless of those visible wishes, even though, little recognition has been paid to the systematic collecting of data approximately groundwater assets long ago few a long time, with the outcome that info are patchy, wisdom is restricted and funding is poorly targeted. 
This booklet was once written to begin to bridge the information hole. The 29 chapters are written by way of a mix of practitioners and researchers in general from inside Africa utilizing event from fresh and ongoing projects.  The chapters spotlight the complexity and diversity of matters surrounding the advance and administration of groundwater assets throughout Africa, and supply a photograph of groundwater study and alertness within the early twenty first century.  Chapters variety from strategic discussions of the position of groundwater in improvement and poverty relief, to case stories on suggestions used to advance groundwater, and modelling equipment for dealing with groundwater systems. 

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Additional info for Applied Groundwater Studies in Africa: IAH Selected Papers on Hydrogeology, volume 13

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Waterlines, 25(1) 4–6. Edmunds, W. M. 2008. Groundwater in Africa – palaeowater, climate change and modern recharge. This volume. Elson, R. & Shaw, R. 1995. Technical Brief No 43: Simple Drilling Methods. Waterlines, 13 (3) 5–18. Getachew, H. 2004. UNICEF Study on Groundwater and Requirements for Drilling and Other Systems Tapping Groundwater in Ethiopia. Paper for International Groundwater Conference, Addis Ababa, 25–27 May 2004. Haysom, A. 2006. A study of the factors affecting sustainability of rural water supplies in Tanzania.

The aquifers can be complex, often with lenses of sand, gravel and silts, depending on the depositional environment. Flood plains of big rivers like the Zambezi, and the inland Okavango delta in Botswana are examples, and freshwater lenses can often be distinguished by subtle vegetation changes (Woodhouse, 1991), as well as by more sophisticated geophysical techniques. Concentrations of metals such as iron can be a concern in shallow unconsolidated aquifers, and faecal contamination from latrines or diffuse pollution from the intensification of agriculture is also an issue.

This is formed predominantly of lava flows and basalt sheets that were associated with the opening of the Rift Valley system. The volcanic rocks can be jointed and fractured, have weathered areas, and are interleaved with ash layers and palaeosoils, which are often porous and are good aquifers. Water is generally accessed from springs or from deep boreholes that can cut across several more permeable layers, but in some areas such as the Kenyan tablelands, shallow hand dug wells in volcanic terrain are often found.

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