Bridging scales and borders on water availability and use in the transboundary Volta River Basin: a water accounting approach

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cg.contributor.affiliationInternational Water Management Institute
cg.contributor.affiliationWorld Bank
cg.contributor.affiliationVolta Basin Authority, Burkina Faso
cg.contributor.donorLeona M. and Harry B. Helmsley Charitable Trust
cg.contributor.donorWorld Bank
cg.coverage.countryBurkina Faso
cg.coverage.countryGhana
cg.coverage.countryTogo
cg.coverage.countryBenin
cg.coverage.countryMali
cg.coverage.countryCôte d'Ivoire
cg.coverage.iso3166-alpha2BFen_US
cg.coverage.iso3166-alpha2GHen_US
cg.coverage.iso3166-alpha2TGen_US
cg.coverage.iso3166-alpha2BJen_US
cg.coverage.iso3166-alpha2MLen_US
cg.coverage.iso3166-alpha2CIen_US
cg.coverage.regionWestern Africa
cg.creator.identifierAfua Owusu: 0000-0001-6420-6663
cg.creator.identifierDr Akpoti Komlavi: 0000-0001-6435-5116
cg.creator.identifierMansoor Leh: 0000-0001-8865-767X
cg.creator.identifierTharindu Perera: 0009-0007-2739-3149
cg.creator.identifierKirubel Mekonnen Gebreyesus: 0009-0007-6380-9789
cg.creator.identifierNaga Manohar Velpuri: 0000-0002-6370-1926
cg.identifier.doihttps://doi.org/10.1016/j.ejrh.2025.102377
cg.identifier.iwmilibraryH053743
cg.identifier.projectIWMI - D-0523
cg.identifier.projectIWMI - D-0519
cg.isijournalISI Journal
cg.issn2214-5818
cg.journalJournal of Hydrology: Regional Studies
cg.reviewStatusPeer Review
cg.river.basinVOLTA
cg.volume59
dc.contributor.authorOwusu, Afua
dc.contributor.authorAkpoti, Komlavi
dc.contributor.authorLeh, Mansoor
dc.contributor.authorPerera, Tharindu
dc.contributor.authorMadushanka, Lahiru
dc.contributor.authorMekonnen, Kirubel
dc.contributor.authorTinonetsana, Primrose
dc.contributor.authorTayebi, N.
dc.contributor.authorEscalera-Rodriguez, A. C.
dc.contributor.authorFofana, R.
dc.contributor.authorVelpuri, Naga Manohar
dc.date.accessioned2025-04-23T19:35:17Z
dc.date.available2025-04-23T19:35:17Z
dc.identifier.urihttps://hdl.handle.net/10568/174300
dc.titleBridging scales and borders on water availability and use in the transboundary Volta River Basin: a water accounting approach
dcterms.abstractStudy region: Volta Basin Study focus: Water management in transboundary basins is challenging due to the interaction of natural and human factors across political borders. The Volta River Basin, shared by six West African countries, exemplifies this with variable water distribution and socio-economic pressures. This study presents a comprehensive multi-scale water accounting of the basin, assessing water flows and usage at basin-wide, sub-basin, and riparian country scales from 2003 to 2021. New hydrological insights for the region: The results reveal average basin closure is 55 % with room for additional water allocation given that utilizable water in the basin is 20 km3 /year and almost 25 % of the basin’s exploitable water is non-recoverable water (wastewater). Sub-basin analysis showed variations in average annual rainfall, ranging from 940 to 1250 mm/year, and groundwater recharge rates (18–64 mm/year), with southern sub-basins receiving more rainfall and having higher recharge rates. Similarly at the country level, variability in rainfall (630–1220 mm/ year) and recharge rates (20–280 mm/year) were noted, with downstream countries benefiting from higher rainfall and significant inflows from upstream countries. The analysis underscored the interconnectedness of water use across the basin’s riparian countries. The study’s findings give insights for the strategic management of water resources and the crucial need for enhanced cooperation among riparian countries to address shared challenges and opportunities in the Volta Basin.
dcterms.accessRightsOpen Access
dcterms.available2025-04-19
dcterms.bibliographicCitationOwusu, Afua; Akpoti, Komlavi; Leh, Mansoor; Perera, Tharindu; Madushanka, Lahiru; Mekonnen, Kirubel; Tinonetsana, Primrose; Tayebi, N.; Escalera-Rodriguez, A. C.; Fofana, R.; Velpuri, Naga Manohar. 2025. Bridging scales and borders on water availability and use in the transboundary Volta River Basin: a water accounting approach. Journal of Hydrology: Regional Studies, 59:102377. (Online first) [doi: https://doi.org/10.1016/j.ejrh.2025.102377]
dcterms.extent102377.
dcterms.issued2025-06
dcterms.languageen
dcterms.licenseCC-BY-NC-ND-3.0-IGO
dcterms.publisherElsevier
dcterms.subjectwater availability
dcterms.subjectwater use
dcterms.subjectwater accounting
dcterms.subjecttransboundary waters
dcterms.subjectriver basins
dcterms.subjectriparian zones
dcterms.subjectinternational cooperation
dcterms.subjectwater management
dcterms.subjectwater allocation
dcterms.subjectwater resources
dcterms.subjectrainfall
dcterms.subjectevapotranspiration
dcterms.typeJournal Article

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