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Climate, Land Use and Land Cover Changes in the Bandama Basin (Côte D’Ivoire, West Africa) and Incidences on Hydropower Production of the Kossou Dam

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Centre de Recherche en Ecologie, Université Nangui Abrogoua, 02 BP 801 Abidjan 02, Côte d’Ivoire
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Laboratoire Géosciences et Environnement, Université Nangui Abrogoua, 02 BP 801 Abidjan 02, Côte d’Ivoire
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LAPAMF—African Centre of Excellence on Climate Change, Biodiversity and Sustainable Development/Université Félix Houphouët Boigny, 22 B.P. 582 Abidjan 22, Côte d’Ivoire
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IRD, CNRS, Grenoble INP, IGE, Univ. Grenoble Alpes, F-38000 Grenoble, France
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Department of Civil and Environmental Engineering, University of Massachusetts Amherst, Amherst, MA 01003, USA
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Département de Géographie et Aménagement de Territoire (DGAT/FLASH), Université de Parakou, BP 123 Parakou, Bénin
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UFR-Environnement, Université Jean Lorougnon GUEDE, 12 BP V 25 Daloa 12, Côte d’Ivoire
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Centre Universitaire de Recherche et d’Application en Télédétection (CURAT), Université Félix Houphouët Boigny, 22 BP 801 Abidjan 22, Côte d’Ivoire
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Author to whom correspondence should be addressed.
Land 2019, 8(7), 103; https://doi.org/10.3390/land8070103
Received: 2 May 2019 / Revised: 14 June 2019 / Accepted: 21 June 2019 / Published: 27 June 2019
(This article belongs to the Special Issue The Water-Energy-Food Nexus: Progress and Prospects)
Climate and land use/cover changes are potential drivers of change in hydrology and water use. Incidences of these factors on Bandama hydrological basin and Kossou hydropower generation (1981–2016) in West Africa are assessed in this present work. Using Landsat products of United Stated Geological Survey, results show that water bodies areas and land use have increased by 1.89%/year and 11.56%/year respectively, whereas herbaceous savanna, savanna, forest and evergreen forest coverage have been reduced by 1.39%/year, 0.02%/year, 2.39%/year and 3.33%/year respectively from 1988 to 2016. Hydroclimatic analysis reveals that streamflow presents greater change in magnitude compared to rainfall though both increasing trends are not statistically significant at annual scale. Streamflow varies at least four (two) times greatly than the rainfall (monthly and seasonally) annually except during driest months probably due to land use/cover change. In contrast, Kossou hydropower generation is significantly decreasing (p-value 0.007) at both monthly and annual scales possibly due to water abstraction at upstream. Further works are required to elucidate the combined effects of land use/cover and climate changes on hydrological system as well as water abstraction on Kossou generation. View Full-Text
Keywords: Rainfall; streamflow; land use; land cover change; hydropower; hydropower generation Rainfall; streamflow; land use; land cover change; hydropower; hydropower generation
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Kouame, Y.M.; Obahoundje, S.; Diedhiou, A.; François, B.; Amoussou, E.; Anquetin, S.; Didi, R.S.; Kouassi, L.K.; N’guessan Bi, V.H.; Soro, E.G.; Yao, E.K. Climate, Land Use and Land Cover Changes in the Bandama Basin (Côte D’Ivoire, West Africa) and Incidences on Hydropower Production of the Kossou Dam. Land 2019, 8, 103.

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