Estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopia
Study region: Lake Tana sub-basin of the Upper Blue Nile River Basin, Ethiopia. Study focus: Groundwater use for small-scale irrigation is increasing in the Lake Tana sub-basin. However, the abstraction amount and its impact are not well understood. In this study, a new methodological approach was u...
| Autores principales: | , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
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Elsevier
2023
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/129813 |
| _version_ | 1855531227074789376 |
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| author | Fantaye, S. M. Wolde, B. B. Haile, Alemseged Tamiru Taye, Meron Teferi |
| author_browse | Fantaye, S. M. Haile, Alemseged Tamiru Taye, Meron Teferi Wolde, B. B. |
| author_facet | Fantaye, S. M. Wolde, B. B. Haile, Alemseged Tamiru Taye, Meron Teferi |
| author_sort | Fantaye, S. M. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Study region: Lake Tana sub-basin of the Upper Blue Nile River Basin, Ethiopia. Study focus: Groundwater use for small-scale irrigation is increasing in the Lake Tana sub-basin. However, the abstraction amount and its impact are not well understood. In this study, a new methodological approach was utilized to estimate the irrigation water abstraction amount, which is based on groundwater level monitoring before, during, and at the end of the irrigation season (2021/2022). The monitoring was conducted on 361 hand-dug wells distributed throughout the sub-basin, which is subdivided into East, Southwest, and North zones. New hydrological insights for the region: Groundwater abstraction for irrigation and associated groundwater level decline estimates are 10.6 × 106 m3 and 2.43 m in the East, 4.2 × 106 m3 and 3.23 m in the Southwest, and 0.6 × 106 m3 and 1.32 m in the North. These abstractions account for 103%, 97%, and 62% of the mean annual groundwater recharge in the East, Southwest, and North zones, respectively. Groundwater is overexploited in the East and Southwest zones although, at the sub-basin scale, the amount of groundwater used for irrigation is small compared to the renewable groundwater resource. However, if groundwater-based irrigation continues to expand especially in the East and Southwest zones, groundwater scarcity at the local scales will worsen. Adaptive management strategies are required to minimize the potential adverse effects on groundwater resources. |
| format | Journal Article |
| id | CGSpace129813 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1298132025-12-08T10:11:39Z Estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopia Fantaye, S. M. Wolde, B. B. Haile, Alemseged Tamiru Taye, Meron Teferi groundwater extraction groundwater irrigation shallow water water availability groundwater recharge groundwater table monitoring water levels small-scale irrigation water use surface water water supply irrigated land aquifers sediment lakes wells dry season Study region: Lake Tana sub-basin of the Upper Blue Nile River Basin, Ethiopia. Study focus: Groundwater use for small-scale irrigation is increasing in the Lake Tana sub-basin. However, the abstraction amount and its impact are not well understood. In this study, a new methodological approach was utilized to estimate the irrigation water abstraction amount, which is based on groundwater level monitoring before, during, and at the end of the irrigation season (2021/2022). The monitoring was conducted on 361 hand-dug wells distributed throughout the sub-basin, which is subdivided into East, Southwest, and North zones. New hydrological insights for the region: Groundwater abstraction for irrigation and associated groundwater level decline estimates are 10.6 × 106 m3 and 2.43 m in the East, 4.2 × 106 m3 and 3.23 m in the Southwest, and 0.6 × 106 m3 and 1.32 m in the North. These abstractions account for 103%, 97%, and 62% of the mean annual groundwater recharge in the East, Southwest, and North zones, respectively. Groundwater is overexploited in the East and Southwest zones although, at the sub-basin scale, the amount of groundwater used for irrigation is small compared to the renewable groundwater resource. However, if groundwater-based irrigation continues to expand especially in the East and Southwest zones, groundwater scarcity at the local scales will worsen. Adaptive management strategies are required to minimize the potential adverse effects on groundwater resources. 2023-04 2023-03-31T04:20:36Z 2023-03-31T04:20:36Z Journal Article https://hdl.handle.net/10568/129813 en Open Access Elsevier Fantaye, S. M.; Wolde, B. B.; Haile, Alemseged Tamiru; Taye, Meron Teferi. 2023. Estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopia. Journal of Hydrology: Regional Studies, 46:101365. [doi: https://doi.org/10.1016/j.ejrh.2023.101365] |
| spellingShingle | groundwater extraction groundwater irrigation shallow water water availability groundwater recharge groundwater table monitoring water levels small-scale irrigation water use surface water water supply irrigated land aquifers sediment lakes wells dry season Fantaye, S. M. Wolde, B. B. Haile, Alemseged Tamiru Taye, Meron Teferi Estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopia |
| title | Estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopia |
| title_full | Estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopia |
| title_fullStr | Estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopia |
| title_full_unstemmed | Estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopia |
| title_short | Estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the Lake Tana Sub-basin, Ethiopia |
| title_sort | estimation of shallow groundwater abstraction for irrigation and its impact on groundwater availability in the lake tana sub basin ethiopia |
| topic | groundwater extraction groundwater irrigation shallow water water availability groundwater recharge groundwater table monitoring water levels small-scale irrigation water use surface water water supply irrigated land aquifers sediment lakes wells dry season |
| url | https://hdl.handle.net/10568/129813 |
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