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Realistic assessment of irrigation potential in the Lake Tana basin, Ethiopia

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Title Realistic assessment of irrigation potential in the Lake Tana basin, Ethiopia
 
Creator Wale, A.
Collick, A.S.
Rossiter, D.G.
Langan, Simon J.
Steenhuis, Tammo S.
 
Subject water
 
Description Although Ethiopia has a large potential to develop irrigation, only 5% of the 3.5 million hectares of land potentially available has been developed. To examine the underlying causes, this study evaluates the suitability of surface water irrigation for the Lake Tana Basin development corridor. Surface water availability and land potentially suitable for medium and large-scale irrigation development (200 ha and larger) was considered. Surface water potential was examined by considering river discharges. Land suitable for irrigation was determined with a GIS-based multi-criteria evaluation (MCE), which considers the interaction of various factors, such as climate, river proximity, soil type, land cover, topography/slope and market outlets. The result indicates that nearly 11% of the Lake Tana Basin is suitable for surface irrigation. However, by analysing 27 years of river discharge, less than 3% of the potential irrigable area (or less than 0.25% of the basin area) could be irrigated consistently by run-of-the river-systems. Thus, the irrigation potential in the Lake Tana Basin can only be met by increasing dry season flows (if proven feasible) and by supplying water from existing or future reservoirs or by using water directly from Lake Tana.
 
Date 2013-11-01
2013-12-14T14:56:22Z
2013-12-14T14:56:22Z
 
Type Book Chapter
 
Identifier Wale, A., Collick, A.S., Rossiter, D.G., Langan, S. and Steenhuis, T.S. 2013. Realistic assessment of irrigation potential in the Lake Tana basin, Ethiopia. IN: Wolde, M. (ed). 2013, Rainwater management for resilient livelihoods in Ethiopia: Proceedings of the Nile Basin Development Challenge Science Meeting, Addis Ababa, 9–10 July 2013. NBDC Technical Report 5. Nairobi, Kenya: ILRI.
https://hdl.handle.net/10568/34258
 
Language en
 
Relation https://hdl.handle.net/10568/33929
NBDC Technical Report
 
Rights Open Access
 
Format application/pdf
 
Publisher International Livestock Research Institute