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A literature review of recharge estimation and groundwater resource assessment in Africa

By Lei Wang, Brighid O Dochartaigh and David Macdonald


This report reviews the available literature on groundwater recharge and groundwater resource assessment in Africa. The purpose of this review is to identify estimates of groundwater recharge that have been undertaken either in Africa, or outside Africa but in similar environments and climates to those found in Africa.\ud The first part of the report highlights the importance of groundwater recharge modelling to the study of climate change impacts on groundwater resources in Africa. Section 2 discusses groundwater recharge mechanisms, and challenges in recharge estimation, particularly in arid and semi-arid regions. Sections 3, 4, 5, and 6 largely describe groundwater recharge studies in arid and semi-arid areas, especially in Africa, which used different methods at different scales. In the final part of the report we emphasize our main conclusion:\ud • There is a gap in information on the scale and temporal and spatial distribution of groundwater recharge across much of Africa. Most existing recharge estimates have been done on an ad hoc basis using very different methods and data, so that there is no consistency between estimates in different regions. The distribution of these estimates across Africa is also patchy and unequal.\ud • There is potential value in producing a process-based quantitative continental scale recharge estimate that uses a consistent approach and data, as the basis for studying potential climate change impacts on groundwater resources in Africa. The only existing continental scale recharge model, the WaterGAP Global Hydrology Model (WGHM) (Döll et al. 2003, Döll and Flörke 2005, and Döll and Fiedler 2008), was originally designed to estimate global runoff, and does not fully quantitatively account for detailed hydrogeological processes, in particular for soil moisture change processes related to groundwater recharge.\ud • Developing a continental-scale recharge model that accounts for the highly variable climate zones across Africa, with the limited available data, is a great challenge. Modelling recharge is particularly difficult in arid and semi-arid areas

Topics: Earth Sciences
Publisher: British Geological Survey
Year: 2010
OAI identifier: oai:nora.nerc.ac.uk:14145

Suggested articles



  1. (2003). A continental scale water balance model: a GIS-approach for Southern Africa.
  2. (2007). A GIS-based DRASTIC vulnerability and net recharge reassessment in an aquifer of a semi-arid region (Metline-Ras Jebel-Raf Raf aquifer,
  3. (2003). A global hydrological model for deriving water availability indicators: model tuning and validation.
  4. (2009). A Remote Sensing Solution for Estimating Runoff and Recharge in Arid Environments,
  5. (2007). A single layer soil water balance model for estimating deep drainage (potential recharge): An application to cropped land in semi-arid North-east Nigeria.
  6. (2008). African hydrogeology and rural water supply.
  7. (2008). An approach for catchment-scale groundwater nitrate risk assessment from diffuse agricultural sources: a case study in the Upper Bann, Northern Ireland. Hydrological Processes,
  8. (1995). An explanation of a set of national groundwater maps,
  9. (2002). Assessing the potential for significant and episodic recharge in southwestern Australia using rainfall data.
  10. (1931). Capillary conduction of liquids through porous mediums.
  11. (1996). Chloride mass-balance method for estimating ground water recharge in arid areas: examples from western Saudi Arabia.
  12. (2002). Choosing appropriate techniques for quantifying groundwater recharge.
  13. (2005). Climatic controls on diffuse groundwater recharge in semiarid environments of the southwestern United States. doi
  14. (2009). Comparison of groundwater recharge estimation methods for the semi-arid Nyamandhlovu area, doi
  15. (1997). Construction of 3 minute latitude/longitude monthly climate surfaces over Africa for the period 1951-1995. Climate Research Unit,
  16. (2002). Construction of a hydrologic model for estimating Wadi runoff and groundwater recharge in the Eastern Desert, Egypt.
  17. (2008). Contribution of magnetic resonance sounding to aquifer characterization and recharge estimate in semiarid Niger.
  18. (1998). Crop evapotranspiration: guidelines for computing crop water requirements, Irrigation and Drainage Paper 56. FAO,
  19. (2005). Cumulative rainfall collectors – A tool for assessing groundwater recharge.
  20. (1992). De Aar‘s groundwater supply: a digest of the past and an outlook for the future.
  21. (2009). Developing a preliminary recharge model of the Nile Basin to help interpret GRACE data. British Geological Survey international report no. OR/09/018,
  22. (1987). DRASTIC: A standardised system for evaluating groundwater pollution potential using hydrogeologic settings, US Environment Protection Agency,
  23. (2002). Estimate of recharge of a rising water table in semiarid Niger from 3H and 14C modeling.
  24. (2005). Estimating amount and spatial distribution of groundwater recharge in the Iullemmeden basin (Niger) based on 3H, 3He and CFC-11 measurements.
  25. (2008). Estimating groundwater recharge in the southwestern sector of the Chad basin using chloride data. In:
  26. (1992). Estimating paleorecharge and paleoclimate from unsaturated zone profiles.
  27. (1994). Estimating the spatial variability of groundwater recharge in the Sahel using chloride.
  28. (1990). Estimation of natural groundwater recharge in the Karoo aquifers of South Africa.
  29. (1997). Estimation of rainfall inputs and direct recharge to the deep unsaturated zone of southern Niger using the chloride profile method.
  30. (1993). Estimation of the Zeerust-Rietpoort groundwater potential.
  31. (1993). Evaporation. In: Maidment,
  32. (2007). Focused ground-water recharge in the Amargosa Desert Basin.
  33. (1987). Geohydrological investigation of the Schoonspruit compartment in the dolomite area of Ventersdorp.
  34. (2009). GIS for the assessment of the groundwater recharge potential zone. doi
  35. (2006). Global synthesis of groundwater recharge in semiarid and arid regions.
  36. (2005). Global-scale estimation of diffuse groundwater recharge, frankfurt hydrology paper 03,
  37. (2008). Global-scale modeling of groundwater recharge.
  38. (2006). Groundwater degradation in the Chahaertan Oasis, Alxa League,
  39. (2008). Groundwater in north and central Sudan.
  40. (2008). Groundwater in Sub-Saharan Africa: A strategic overview of developmental issues.
  41. (1994). Groundwater modelling with limited data: a case study in a semiarid dunefield of northeast Nigeria.
  42. (1996). Groundwater recharge estimation using chloride, stable isotopes and tritium profiles in the sands of northwestern Senegal.
  43. (1978). Groundwater recharge in the dolomite of the Ghaap Plateau near Kuruman in the northern Cape,
  44. (2000). Groundwater recharge in the Kalahari, with reference to paleo-hydrologic conditions.
  45. (1996). Groundwater recharge in the Victoria Nile basin of east Africa: support for the soil moisture balance approach using stable isotope tracers and flow modelling. doi
  46. (1990). Groundwater recharge; a guide to understanding and estimating natural recharge.
  47. (2002). Groundwater recharge: an overview of processes and challenges.
  48. (2008). Groundwater research issues in Africa.
  49. (1963). Groundwater studies in Northern Natal, Zululand and surrounding areas.
  50. (1992). Groundwater temperatures in relation to the geothermal gradient and applications in groundwater studies.
  51. (1999). Hydrological processes and water resources management in a dryland environment I: An introduction to the Romwe Catchment Study in Southern Zimbabwe. Hydrology and Earth System Sciences,
  52. (1999). Hydrological processes and water resources management in a dryland environment II: Surface redistribution of rainfall within fields.
  53. (1999). Hydrological processes and water resources management in a dryland environment III: Groundwater recharge and recession in a shallow weathered aquifer. Hydrology and Earth System Sciences,
  54. (1999). Hydrological processes and water resources management in a dryland environment IV: Long-term groundwater level fluctuations due to variation in rainfall.
  55. (2006). Improved soil moisture balance methodology for recharge estimation.
  56. (2001). Investigation of the unsaturated zone in semi-arid regions using isotopic and chemical methods and applications to water resource problems.
  57. (1999). Lakes, groundwater and palaeohydrology in the Sahel of NE Nigeria: evidence from hydrogeochemistry.
  58. (1998). Large area hydrological modelling and assessment Part I: model development.
  59. (2001). Long-term rise in a Sahelian water table: the Continental Terminal in South-West Niger.
  60. (1995). Manual on quantitative estimation of groundwater recharge and aquifer storativity. Water Reshearch Commission Report TT73/95.
  61. (1995). Modeling the effects of rainfall variability on g r o u n dwater recharge in semi-arid Tanzania. Nordic Hydrology,
  62. (1996). Multiple tracer profiling in Botswana–GRES findings.
  63. (1972). On the assessment of surface heat flux and evaporation using large scale parameters.
  64. (1986). Quantitative estimates of groundwater recharge in dolomite.
  65. (1987). Quantitative estimation of the aquifer storativity and recharge by means of a water balance and incorporating a finite element network. Quantity and quality conference, IAHS,
  66. (1990). Rainfall-runoff-recharge relationships in the basement rocks of Zimbabew. In:
  67. (2002). Recharge and groundwater models: an overview.
  68. (1993). Recharge estimation based on chloride profiles.
  69. (1997). Recharge from precipitation. In: Recharge of Aquifers
  70. (1992). Recharge mechanisms and geochemical processes in a semi-arid sedimentary basin,
  71. (2005). Recharge modelling for the West Bank aquifers. British Geological Survey commissioned report no. CR/05/087,
  72. (1992). Recharge of springs in South Africa.
  73. (2007). Regional Climate Projections‘
  74. (2007). Remote sensing and GIS for mapping groundwater recharge and discharge areas in salinity prone catchments, southeastern Austrialia. doi
  75. (1978). Riverside County Hydrology Manual. Riverside County,
  76. (2003). Runoff generation from successive simulated rainfalls on a rocky, semi-arid, Mediterranean hillslope.
  77. (1988). Solute profile techniques for recharge estimation in semi-arid and arid terrain.
  78. (1991). Source and recharge of groundwater in the basement terrain in the Zaria-Kaduna area, Nigeria: applying stable isotopes.
  79. (2002). Spatial and temporal distribution of groundwater recharge in northern Nigeria.
  80. (1985). States Department of Agriculture-Soil Conservation Service).
  81. (2007). Streamflow, infiltration, and ground-water recharge at Abo Arroyo,
  82. (2007). Streamflow, Infiltration, and Recharge in Arroyo Hondo,
  83. (2008). Survey commissioned report no. CR/06/220N,
  84. (1967). The assessment of possible future use of the dolomitic groundwater resources of the far West Rand, Transvaal, South Africa. Water for Peace Conf.
  85. (1981). The geohydrology of the dolomite aquifers of the Malmani Subgroup of the South Western Transvaal,
  86. (1999). The influence of tectonic setting on the hydrological characteristics of deeply weathered terrains: evidence from Uganda. doi
  87. (1979). The sensitivity of parameters in the Penman evaporation equations and direct recharge balance.
  88. (2006). The struggle for wate - drought, water security and rural livelihoods. British Geological Survey commissioned report no. CR/02/226N,
  89. (1995). Tracer interpretation of moisture transport in a Kalahari sand profile. In:
  90. (2004). User‘s manual for the recharge model ZOODRM. British Geological Survey internal report no. CR/04/151N,
  91. (1994). Vadose-zone techniques for estimating groundwater recharge in arid and semiarid regions.
  92. (2009). Vulnerability to the impact of climate change on renewable groundwater resources: a global-scale assessment.
  93. (1991). Water percolation: an indicator of nitrogen- leaching potential. In:
  94. (1997). Water table fluctuation and recharge in semi-arid climate: some results of the HAPEX-Sahel hydrodynamic survey (Niger).
  95. (2009). What impact will climate change have on rural groundwater supplies in Africa?
  96. (2009). What will climate change mean for groundwater supply in Africa? Odi and BGS Background Note.

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