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

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    Book Chapter (230.5Kb)
    Authors
    Wale, A.
    Collick, A.S.
    Rossiter, D.G.
    Langan, Simon J.
    Steenhuis, Tammo S.
    Date
    2013-11
    Language
    en
    Type
    Book Chapter
    Accessibility
    Open Access
    Metadata
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    Citation
    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.
    Permanent link to cite or share this item: https://hdl.handle.net/10568/34258
    Abstract/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.
    Other CGIAR Affiliations
    Water, Land and Ecosystems
    AGROVOC Keywords
    water
    Subjects
    IRRIGATION; WATER RESOURCES; WATER;
    Countries
    Ethiopia
    Regions
    Africa; Eastern Africa
    Related material
    Related reference: https://hdl.handle.net/10568/33929
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    • N4: Rainwater management in the Ethiopian highlands: Assessing and anticipating the consequences of innovation [42]

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