Articles | Volume 27, issue 21
https://doi.org/10.5194/hess-27-4057-2023
https://doi.org/10.5194/hess-27-4057-2023
Research article
 | 
13 Nov 2023
Research article |  | 13 Nov 2023

Inferring reservoir filling strategies under limited-data-availability conditions using hydrological modeling and Earth observations: the case of the Grand Ethiopian Renaissance Dam (GERD)

Awad M. Ali, Lieke A. Melsen, and Adriaan J. Teuling

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Cited articles

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Abera, W., Formetta, G., Brocca, L., and Rigon, R.: Modeling the water budget of the Upper Blue Nile basin using the JGrass-NewAge model system and satellite data, Hydrol. Earth Syst. Sci., 21, 3145–3165, https://doi.org/10.5194/hess-21-3145-2017, 2017. a
Adam, H., AW, A., and Hata, T.: The Future of Participatory Water Management in Gezira Scheme, Sudan, in: Proceedings of the International Workshop on Participatory Management of Irrigation Systems, 16–23 March 2003, Kyoto, Osaka, Japan, 18–24, https://www.researchgate.net/publication/374762917 (last access: 8 November 2023), 2003. a
Adem, A. A., Dile, Y. T., Worqlul, A. W., Ayana, E. K., Tilahun, S. A., and Steenhuis, T. S.: Assessing digital soil inventories for predicting streamflow in the headwaters of the Blue Nile, Hydrology, 7, 8, https://doi.org/10.3390/hydrology7010008, 2020. a
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Short summary
Using a new approach based on a combination of modeling and Earth observation, useful information about the filling of the Grand Ethiopian Renaissance Dam can be obtained with limited data and proper rainfall selection. While the monthly streamflow into Sudan has decreased significantly (1.2 × 109–5 × 109 m3) with respect to the non-dam scenario, the negative impact has been masked due to higher-than-average rainfall. We reveal that the dam will need 3–5 more years to complete filling.