Rainwater Harvesting - A Potential Safety Net for Water Security in Ghana

Main Article Content

Amankwah Emmanuel
Mensah Jackson Napoleon


Water is an important medium for many activities including water for consumptive and non-consumptive purposes. Lack of water quality and quantity does not only hampers socio-economic development but affects agricultural productivity, sustainable development, sanitation, health, industrial development and the ecosystem. The advent of climate change is known to affect water flow, increases dry season spells and drought, and influences reservoirs or deep groundwater wells thus worsening the precarious water situation in Africa.  About 1.7 billion of the world population lives in water scarce regions and this is projected to grow to about 300% or 5 billion by 2025 especially in Africa.  In Ghana, population growth, pollution of river bodies, high evapotranspiration, erratic rainfall pattern and environmental degradation among others have affected water availability and use.  These challenges will therefore require a deliberate water harvesting, integrated water management and conservation, water use efficiency and capacity building to withstand the dwindling trend of water resources in the country. This paper therefore seeks to inform policy makers, stakeholders, institutions responsible for water resources management among others to consider water harvesting as a potential solution to the many challenges including water shortages, floods, and land degradation. The article was carried out through extensive review of literature, official reports and policy documents. It shows the need to adopt appropriate techniques for rainwater harvesting to address the perennial water scarcity in the country.

Rainwater harvesting, water security, water quality, water management, water conservation.

Article Details

How to Cite
Emmanuel, A., & Napoleon, M. J. (2019). Rainwater Harvesting - A Potential Safety Net for Water Security in Ghana. Asian Journal of Environment & Ecology, 10(2), 1-10. https://doi.org/10.9734/ajee/2019/v10i230115
Review Article


Brandy CN, Weil RR. The nature and properties of soils, (14th Edition), person International Edition. Pearson Prentice Hall; 2008.

UNICEF. Global water supply and sanitation assessment, report; 2000.

Batchelor CAK, Singh CH, Rama Mohan Rao, Butterworth C. Watershed development: A solution to water shortages or part of the problem? Land Use & Water Resources Research. 2003; 3:1-10.

UNESCO. World Water Assessment Programme; 2002.
Available:http://www.unesco.org/new/en /natural-sciences/environment/water/wwap/about, (Accessed on 29 / 10 / 2017)

Sanders O, Goesch T, Hughes N. Adapting to water scarcity. ABARE issues and insights 10.5, Australian Bureau of Agricultural and Resource Economics, Canberra, ACT; 2010.

Philander SG. (G Ed) Encyclopedia of global warming and climate change. SAGE Publications, California. 2008;3.

GEF. Addressing transboundary concerns in the Volta River basin and its downstream coastal Area. Global Environment Facility, UN; 2003a.
Available:http://www.gefweb.org/Documents/Council_Documents/GEF_C21/IW_Regional-Volta River Basin-Project Document.pdf

WHO. Ensure Environmental Sustainabillity; 2013.
Available:https://www.who.int/topics/millennium development goals/mdg7/en/ (Accessed on 15/7/19)

UNCCD. Desertification – the invisible frontline. Secretariat of the United Nations Convention to Combat Desertification, Bonn; 2014.

EPA. Ghana’s second national communication under the united national framework convention on climate change. Accra, Ghana; 2011.

UNEP. Rainwater harvesting and utilisation: An environmentally sound approach for sustainable Urban water management: An introductory guide for decision-makers; 2003.
Available:http://www.unep.or.jp/ietc/publications/ urban/urbanenv-2/index.asp

Amankwah E. Impact of illegal mining on water resources for domestic and irrigation purposes. ARPN Journal of Earth Sciences. 2013;2(3):117-121.

Ghana national water policy. Ministry of water resources, works and housing; 2007. Available:https://www.gwcl.com.gh/national_water_policy.pdf

Gleick PH. Global freshwater resources: Soft-path solutions for the 21st century. Science. 2003a;302(28):1524–1528.

Shah T, Singh OP, Mukherji A. Some aspects of South Asia’s groundwater irrigation economy: Analyses from a survey in India, Pakistan, Nepal Terai and Bangladesh. Hydrogeology Journal. 2006; 14(3):286–309.

Giertz S, Diekkruger B, Jaeger A, Schopp M. An interdisciplinary scenario analysis to assess the water availability and water consumption in the Upper Oum catchment in Benin. Adv. Geosci. 2006;9:1-11.

Chen Z, Grasby S, Osadetz K. Relation between climate variability and groundwater levels in the upper carbonate aquifer, southern Manitoba, Canada. J. Hydrol. 2004;290:43-62.

Boko M, Niang I, Nyong A. Africa climate change. Impacts, adaptation and vulnerability. Contribution of working group II to the fourth assessment report of the intergovernmental panel on climate change. Parry ML, Canziani OF, Palutikof JP, van der PJ Linden, Hanson CE, Eds., Cambridge University Press, Cambridge UK. 2007;433-467.

Chappell A, Agnew CT. Modelling climate change in West African Sahel rainfall (1931-90) as an artefact of changing station locations. Int. J. Climatol. 2004;24: 547-554.

Vié J, Hilton-Taylor C, Stuart SN (Eds.). Wildlife in a changing world: An analysis of the 2008 IUCN red list of threatened species. International Union for Conservation of Nature (IUCN), Gland, Switzerland. 2009;157.

Darwall W, Smith K, Allen D, Holland R, Harrison I, Brooks E. (Eds.). The diversity of life in African freshwaters: Under water, under threat. An analysis of the status and distribution of freshwater species throughout mainland Africa. International Union for Conservation of Nature and Natural Resources (IUCN), Cambridge, UK and Gland, Switzerland. 2011;348.

Spellman RF. Handbook of water and wastewater treatment plant operations (3rd Ed). CRC Press Taylor & Francis; 2014.

Gould J, Nissen-Petersen E. Rainwater catchment systems for domestic supply: Design, construction and implementation. Intermediate technology publications Ltd; 1999.

Perrier E, Salkini AB. Supplemental irrigation in the near east and North Africa. Kluwer Academic Publishers, Norwell, MA. 1991;77–189.

Kapadia K. The Tanka system – The parsi craft of water harvesting – An article from the Craft Revival Quarterly. India Water Portal; 2011.

Wisser D, Frolking S, Douglas EM, Fekete BM, Schumann AH, Vorosmarty CJ. The significant of local water resources captured in small reservoirs for crop production – a global scale analysis. Journal of Hydrology 2010;384:264-275

Stark T, Pushard D. The state of rainwater harvesting in the U.S.; 2008.
(Accessed on 23/06/2019)

Haq SA. Harvesting rainwater from Buildings. Springer; 2017.

Bestank. Stainless steel water storage tanks; 2015.
(Retrieved on 15/11/2018)

Oweis TY, Prinz, D, Hachum AY. Water harvesting for agriculture in the dry areas. The Netherlands, CRC Press; 2012.

FAO. Enduring farms: Climate change, smallholders and traditional farming communities. Rome, Italy; 2010.

Droogers P, Immerzeel WW, Terink W, Hoogeveen J. Bierkens MFP, Van Beek LPH, Debele B. Water resources trends in Middle East and North Africa towards 2050. Hydrology and Earth System Sciences. 2012;16(9):3101-3114.

Beck L, Bernauer T: How will combined changes in water demand and climate affect water availability in the Zambezi river basin? Global Environmental Change. 2011;21(3):1061-1072.

Calow R, MacDonald A. What will climate change mean for groundwater supply in Africa? ODI background notes, Overseas Development Institute (ODI), London, UK. 2009;8.

UNDP, UNECA, AfDB, AUC. Assessing progress in Africa toward the millennium development goals: MDG Report. African Development Bank (AfDB), Tunis, Tunisia (temporary relocation) and the United Nations Economic Commission for Africa (UNECA), African Union Commission (AUC), United Nation Development Programme-Regional Bureau for Africa (UNDP-RBA), Addis Ababa, Ethiopia. 2011;136.

Milly PCD, Dunne KA, Vecchia AV. Global pattern of trends in stream flow and water availability in a cha changing climate. Nature 2005;438:347-350.v