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Author Abiye, T.
Title Synthesis on groundwater recharge in Southern Africa: A supporting tool for groundwater users Type Journal Article
Year (down) 2016 Publication Groundwater for Sustainable Development Abbreviated Journal
Volume 2-3 Issue Pages 182-189
Keywords Arid and semi-arid areas, Groundwater recharge, Recharge estimation methods, Southern Africa
Abstract This synthesis on groundwater recharge targets the Southern African region as a result of the dependence of the community and economic sector on the groundwater resource. Several literature based recharge studies were collected and assessed in order to find out the main controls to the occurrence of recharge. The Water Table Fluctuation and Base flow separation methods have been tested in the catchment that drains crystalline basement rocks and dolostones close to the city of Johannesburg, South Africa. Based on the assessed data the Chloride Mass Balance method resulted in groundwater recharge of less than 4% of the rainfall, while it reaches 20%, when rainfall exceeds 600mm. For the classical water balance method, recharge proportion is less than 3% of rainfall as a result of very high ambient temperature in the region. Based on the Saturated Volume Fluctuation and Water Table Fluctuation methods, recharge could be less than 6% for annual rainfall of less than 600mm. Observational results further suggest that sporadic recharge from high intensity rainfall has important contribution to the groundwater recharge in the region, owing to the presence of permeable geological cover, which could not be fully captured by most of the recharge estimation methods. This study further documents an evaluation of the most reliable recharge estimation methods in the area such as the chloride mass balance, saturated volume fluctuation and water table fluctuation methods in order to successfully manage the groundwater resource.
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ISSN 2352-801x ISBN Medium
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Call Number THL @ christoph.kuells @ abiye_synthesis_2016 Serial 101
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Author Benito, G.; Rohde, R.; Seely, M.; Külls, C.; Dahan, O.; Enzel, Y.; Todd, S.; Botero, B.; Morin, E.; Grodek, T.
Title Management of alluvial aquifers in two southern African ephemeral rivers: implications for IWRM Type Journal Article
Year (down) 2010 Publication Water Resources Management Abbreviated Journal
Volume 24 Issue 4 Pages 641-667
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Publisher Springer Netherlands Place of Publication Editor
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Call Number THL @ christoph.kuells @ Benito2010management Serial 25
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Author Dahan, O.; Tatarsky, B.; Enzel, Y.; Külls, C.; Seely, M.; Benito, G.
Title Dynamics of flood water infiltration and ground water recharge in hyperarid desert Type Journal Article
Year (down) 2008 Publication Groundwater Abbreviated Journal
Volume 46 Issue 3 Pages 450-461
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Publisher Blackwell Publishing Inc Malden, USA Place of Publication Editor
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Call Number THL @ christoph.kuells @ Dahan2008dynamics Serial 27
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Author Klock, H.; Külls, C.; Udluft, P.
Title Estimating recharge values using hydrochemical and geological data: a case study from the Type Conference Article
Year (down) 2001 Publication Impact of Human Activity on Groundwater Dynamics: Proceedings of an International Symposium (Symposium S3) Held During the Sixth Scientific Assembly of the International Association of Hydrological Sciences (IAHS) at Maastricht, The Netherlands, from 18 t Abbreviated Journal
Volume Issue 269 Pages 25
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Area Expedition Conference International Assn of Hydrological Sciences
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Call Number THL @ christoph.kuells @ Klock2001estimating Serial 60
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Author Demuth, S.; Külls, C.
Title Probability analysis and regional aspects of droughts in southern Germany Type Journal Article
Year (down) 1997 Publication Sustainability of Water Resources under Increasing Uncertainty Abbreviated Journal
Volume Issue 240 Pages 97
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Publisher Iahs Place of Publication Editor
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Call Number THL @ christoph.kuells @ Demuth1997probability Serial 35
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