Evaluation of groundwater resources in the Geba basin, Ethiopia
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Authors
Tesfagiorgis, K.
Gebreyohannes, T.
De Smedt, F.
Moeyersons, J.
Hagos, M.
Nyssen, J.
Deckers, J.
Discipline
Earth and related Environmental sciences
Subject
Natural hazards
Audience
Scientific
Date
2011Publisher
Springer Verlag
Metadata
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Abstract This article presents an assessment of the groundwater resources in the Geba basin, Ethiopia. Hydrogeological characteristics are derived from a combination of GIS and field survey data. MODFLOW groundwater model in a PMWIN environment is used to simulate the movement and distribution of groundwater in the basin. Despite the limited data available, by simplifying the model as a single layered semi-confined groundwater system and by optimising the transmissivity of the different lithological units, a realistic description of the groundwater flow is obtained. It is concluded that 30,000 m3/day of groundwater can be abstracted from the Geba basin for irrigation in a sustainable way, in locations characterised by shallow groundwater in combination with aquitard-type lithological units.
Citation
Tesfagiorgis, K.; Gebreyohannes, T.; De Smedt, F.; Moeyersons, J.; Hagos, M.; Nyssen, J.; Deckers, J. (2011). Evaluation of groundwater resources in the Geba basin, Ethiopia. , Bull Eng Geol Environ, Vol. 70, 461-466, Springer Verlag, DOI: DOI 10.1007/s10064-010-0338-3.Identifiers
Type
Article
Peer-Review
Yes
Language
eng