Estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopia

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cg.contributor.affiliationBahir Dar Universityen
cg.contributor.affiliationAddis Ababa Universityen
cg.contributor.affiliationInternational Water Management Instituteen
cg.contributor.donorFuture Leader – African Independent Research (FLAIR) Fellowship Programen
cg.contributor.donorUK Government’s Global Challengesen
cg.coverage.countryEthiopia
cg.coverage.iso3166-alpha2ET
cg.coverage.regionEastern Africa
cg.coverage.subregionLake Tana Sub-Basin
cg.coverage.subregionUpper Blue Nile River Basin
cg.creator.identifierAlemseged Tamiru Haile: 0000-0001-8647-2188
cg.creator.identifierMeron Teferi Taye: 0000-0002-4687-4622
cg.identifier.doihttps://doi.org/10.1016/j.ejrh.2023.101365en
cg.identifier.iwmilibraryH051807
cg.isijournalISI Journalen
cg.issn2214-5818en
cg.journalJournal of Hydrology: Regional Studiesen
cg.reviewStatusPeer Reviewen
cg.river.basinNILEen
cg.volume46en
dc.contributor.authorFantaye, S. M.en
dc.contributor.authorWolde, B. B.en
dc.contributor.authorHaile, Alemseged Tamiruen
dc.contributor.authorTaye, Meron Teferien
dc.date.accessioned2023-03-31T04:20:36Zen
dc.date.available2023-03-31T04:20:36Zen
dc.identifier.urihttps://hdl.handle.net/10568/129813
dc.titleEstimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopiaen
dcterms.abstractStudy region: Lake Tana sub-basin of the Upper Blue Nile River Basin, Ethiopia. Study focus: Groundwater use for small-scale irrigation is increasing in the Lake Tana sub-basin. However, the abstraction amount and its impact are not well understood. In this study, a new methodological approach was utilized to estimate the irrigation water abstraction amount, which is based on groundwater level monitoring before, during, and at the end of the irrigation season (2021/2022). The monitoring was conducted on 361 hand-dug wells distributed throughout the sub-basin, which is subdivided into East, Southwest, and North zones. New hydrological insights for the region: Groundwater abstraction for irrigation and associated groundwater level decline estimates are 10.6 × 106 m3 and 2.43 m in the East, 4.2 × 106 m3 and 3.23 m in the Southwest, and 0.6 × 106 m3 and 1.32 m in the North. These abstractions account for 103%, 97%, and 62% of the mean annual groundwater recharge in the East, Southwest, and North zones, respectively. Groundwater is overexploited in the East and Southwest zones although, at the sub-basin scale, the amount of groundwater used for irrigation is small compared to the renewable groundwater resource. However, if groundwater-based irrigation continues to expand especially in the East and Southwest zones, groundwater scarcity at the local scales will worsen. Adaptive management strategies are required to minimize the potential adverse effects on groundwater resources.en
dcterms.accessRightsOpen Access
dcterms.bibliographicCitationFantaye, S. M.; Wolde, B. B.; Haile, Alemseged Tamiru; Taye, Meron Teferi. 2023. Estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopia. Journal of Hydrology: Regional Studies, 46:101365. [doi: https://doi.org/10.1016/j.ejrh.2023.101365]en
dcterms.extent46:101365en
dcterms.issued2023-04
dcterms.languageen
dcterms.licenseCC-BY-NC-ND-4.0
dcterms.publisherElsevieren
dcterms.subjectgroundwater extractionen
dcterms.subjectgroundwater irrigationen
dcterms.subjectshallow wateren
dcterms.subjectwater availabilityen
dcterms.subjectgroundwater rechargeen
dcterms.subjectgroundwater tableen
dcterms.subjectmonitoringen
dcterms.subjectwater levelsen
dcterms.subjectsmall-scale irrigationen
dcterms.subjectwater useen
dcterms.subjectsurface wateren
dcterms.subjectwater supplyen
dcterms.subjectirrigated landen
dcterms.subjectaquifersen
dcterms.subjectsedimenten
dcterms.subjectlakesen
dcterms.subjectwellsen
dcterms.subjectdry seasonen
dcterms.typeJournal Article

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