Realistic assessment of irrigation potential in the Lake Tana basin, Ethiopia
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. Surfac...
| Main Authors: | , , , , |
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| Format: | Book Chapter |
| Language: | Inglés |
| Published: |
International Livestock Research Institute
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/34258 |
| _version_ | 1855529888435404800 |
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| author | Wale, A. Collick, A.S. Rossiter, D.G. Langan, Simon J. Steenhuis, Tammo S. |
| author_browse | Collick, A.S. Langan, Simon J. Rossiter, D.G. Steenhuis, Tammo S. Wale, A. |
| author_facet | Wale, A. Collick, A.S. Rossiter, D.G. Langan, Simon J. Steenhuis, Tammo S. |
| author_sort | Wale, A. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| 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. |
| format | Book Chapter |
| id | CGSpace34258 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | International Livestock Research Institute |
| publisherStr | International Livestock Research Institute |
| record_format | dspace |
| spelling | CGSpace342582023-09-25T07:46:44Z Realistic assessment of irrigation potential in the Lake Tana basin, Ethiopia Wale, A. Collick, A.S. Rossiter, D.G. Langan, Simon J. Steenhuis, Tammo S. water 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. 2013-11-01 2013-12-14T14:56:22Z 2013-12-14T14:56:22Z Book Chapter https://hdl.handle.net/10568/34258 en https://hdl.handle.net/10568/33929 Open Access application/pdf International Livestock Research Institute 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. |
| spellingShingle | water Wale, A. Collick, A.S. Rossiter, D.G. Langan, Simon J. Steenhuis, Tammo S. Realistic assessment of irrigation potential in the Lake Tana basin, Ethiopia |
| title | Realistic assessment of irrigation potential in the Lake Tana basin, Ethiopia |
| title_full | Realistic assessment of irrigation potential in the Lake Tana basin, Ethiopia |
| title_fullStr | Realistic assessment of irrigation potential in the Lake Tana basin, Ethiopia |
| title_full_unstemmed | Realistic assessment of irrigation potential in the Lake Tana basin, Ethiopia |
| title_short | Realistic assessment of irrigation potential in the Lake Tana basin, Ethiopia |
| title_sort | realistic assessment of irrigation potential in the lake tana basin ethiopia |
| topic | water |
| url | https://hdl.handle.net/10568/34258 |
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