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
cg.contributor.affiliationTechnische Universitat Dresdenen
cg.contributor.donorCGIAR Trust Funden
cg.contributor.donorTWAS-DFG Cooperation Visit Programmeen
cg.contributor.donorGlobal Environment Facilityen
cg.contributor.initiativeNEXUS Gains
cg.coverage.regionAfrica
cg.creator.identifierGirma Yimer Ebrhaim: 0000-0002-4695-1034
cg.creator.identifierJonathan Lautze: 0000-0003-4215-5919
cg.identifier.doihttps://doi.org/10.1016/j.gsd.2024.101374en
cg.identifier.iwmilibraryH053448
cg.identifier.projectIWMI - C-0012
cg.isijournalISI Journalen
cg.issn2352-801Xen
cg.journalGroundwater for Sustainable Developmenten
cg.reviewStatusPeer Reviewen
cg.volume27en
dc.contributor.authorEbrahim, Girma Yimeren
dc.contributor.authorStefan, C.en
dc.contributor.authorSallwey, J.en
dc.contributor.authorLautze, Jonathanen
dc.date.accessioned2025-01-28T00:19:18Zen
dc.date.available2025-01-28T00:19:18Zen
dc.identifier.urihttps://hdl.handle.net/10568/170145
dc.titleMapping the potential of managed aquifer recharge in Africa: GIS-based multi-criteria decision analysis approachen
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
dcterms.accessRightsOpen Access
dcterms.available2024-11-12
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
dcterms.extent101374en
dcterms.issued2024-11
dcterms.languageen
dcterms.licenseCC-BY-NC-ND-4.0
dcterms.publisherElsevieren
dcterms.subjectgroundwater rechargeen
dcterms.subjectaquifersen
dcterms.subjectgroundwater managementen
dcterms.subjectgeographical information systemsen
dcterms.subjectwater availabilityen
dcterms.subjectwater demanden
dcterms.typeJournal Article

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