Mapping the potential of managed aquifer recharge in Africa: GIS-based multi-criteria decision analysis approach

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cg.contributor.affiliationInternational Water Management Instituteen_US
cg.contributor.affiliationTechnische Universitat Dresdenen_US
cg.contributor.donorCGIAR Trust Funden_US
cg.contributor.donorTWAS-DFG Cooperation Visit Programmeen_US
cg.contributor.donorGlobal Environment Facilityen_US
cg.contributor.initiativeNEXUS Gainsen_US
cg.coverage.regionAfricaen_US
cg.creator.identifierGirma Yimer Ebrhaim: 0000-0002-4695-1034en_US
cg.creator.identifierJonathan Lautze: 0000-0003-4215-5919en_US
cg.identifier.doihttps://doi.org/10.1016/j.gsd.2024.101374en_US
cg.identifier.iwmilibraryH053448en_US
cg.isijournalISI Journalen_US
cg.issn2352-801Xen_US
cg.journalGroundwater for Sustainable Developmenten_US
cg.reviewStatusPeer Reviewen_US
cg.volume27en_US
dc.contributor.authorEbrahim, Girma Yimeren_US
dc.contributor.authorStefan, C.en_US
dc.contributor.authorSallwey, J.en_US
dc.contributor.authorLautze, Jonathanen_US
dc.date.accessioned2025-01-28T00:19:18Zen_US
dc.date.available2025-01-28T00:19:18Zen_US
dc.identifier.urihttps://hdl.handle.net/10568/170145en_US
dc.titleMapping the potential of managed aquifer recharge in Africa: GIS-based multi-criteria decision analysis approachen_US
dcterms.abstractAfrica faces numerous challenges related to rainfall variability, droughts, water scarcity, and climate change. Managed Aquifer Recharge (MAR)- groundwater recharge and underground water storage for later use or environmental support presents a viable alternative for water storage and may provide an effective tool for coping with such challenges. However, the potential area where MAR can be feasibly implemented has not been identified. This study mapped MAR feasibility using a Geographic Information System-based Multi-Criteria Decision Analysis (GIS-MCDA) and assessed MAR potential in Africa. The methodology focused on three key pillars of MAR feasibility: intrinsic suitability based on biophysical parameters, water source availability, and water demand. Maps responding to these pillars were developed and combined to create a composite MAR feasibility map. Results show that 18% of the continental area falls into the low feasibility class, 73% into the moderate feasibility class, and 7% into the high feasibility class. The feasibility map was validated against 17 existing MAR schemes in Africa, demonstrating a good correlation between their locations and areas with MAR potential. Results of sensitivity analysis of criteria weights of the biophysical parameters show that geology is the most influential criterion, followed by slope. In general, this first feasibility assessment shows good potential for MAR implementation in Africa. Therefore, MAR should be considered prominently among other water storage options for resilience building in Africa and policymakers should ensure adequate resource allocation for its implementation. The feasibility map can be used to guide MAR planning and investment decisions.en_US
dcterms.accessRightsOpen Accessen_US
dcterms.available2024-11-12en_US
dcterms.bibliographicCitationEbrahim, Girma Yimer; Stefan, C.; Sallwey, J.; Lautze, Jonathan. 2024. Mapping the potential of managed aquifer recharge in Africa: GIS-based multi-criteria decision analysis approach. Groundwater for Sustainable Development, 27:101374. [doi: https://doi.org/10.1016/j.gsd.2024.101374]en_US
dcterms.extent101374en_US
dcterms.issued2024-11en_US
dcterms.languageenen_US
dcterms.licenseCC-BY-NC-ND-4.0en_US
dcterms.publisherElsevieren_US
dcterms.subjectgroundwater rechargeen_US
dcterms.subjectaquifersen_US
dcterms.subjectgroundwater managementen_US
dcterms.subjectgeographical information systemsen_US
dcterms.subjectwater availabilityen_US
dcterms.subjectwater demanden_US
dcterms.typeJournal Articleen_US

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