Publications

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 70: 461-466. Springer Verlag. DOI: DOI 10.1007/s10064-010-0338-3.  (PR).

Article dans une revue scientifique / Article dans un périodique

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.