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Hydrological Characterization of Water Resources Used for Sugarcane Production in the Sugar Complexes of Ferkessedougou (North of Côte d’Ivoire)

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Journal of Geoscience and Environment Protection 2021年第12期9卷 1-15页

作者： Affoué Berthe Yao Sampah georges Eblin Gla Blaise ouedé Kouakou Lazare Kouassi Do Ange Désiré Soro Arona Diedhiou Bi Crépin Péné Laboratory of Environmental Sciences and Technologies UFR Environment Jean Lorougnon Guédé University Daloa C&#244 te d’Ivoire Laboratory NEXUS “Climate Water Agriculture Energy Nexus and Climate Services” Research and Development Institute Felix Houphou&#235 t Boigny University Abidjan C&#244 te d’Ivoire Research and Development Department SUCAF-CI Ferkessedougou C&#244 te d’Ivoire

Water resources, although renewable, are limited and threatened by climate change and anthropic activities. Assessment and forecasting of these resources can provide valuable information for water resource planners. This study aims to quantify the surface water resources used for sugarcane production in sugar complexes of Ferkessedougou. This is based on the morphological characterization of the river Morrison and Lopkoho dams and on extreme daily flow probability of occurrence estimation using frequency analysis method. The bathymetric survey showed that the Morrison Dam impoundment had a maximum depth of 11.98 m;a water capacity of 11,656,735.5 m3. For the Lokpoho dam, the reservoir had a maximum depth of 8.82 m, which corresponds to a water volume of 4,354,531.5 m3. Nevertheless, the water capacity of these reservoirs is greatly reduced by a large volume of sediment estimated at 1,013,058.96 m3 for Morrison and 599,740 m3 for Lokpoho. Statistical analysis of maximum daily flows shows that flows between 73.9 and 100 m3/s have the potential to occur every five years at the Route Korhogo Badikaha hydrometric station. The recurrence of the decennial (298 m3) and quinquenal (248 m3) flows shows the importance of the flood flows of the Bandama River. It also shows that the low water levels of the Bandama are very pronounced. The minimum flow that SUCAF-CI water managers should expect every five years is 1.36 m3/s and the ten-year low flow is 2.10 m3/s. These results are indicators of water scarcity risks and could guide decision making in the Ferkessedougou sugar complexes.

关键词： Bathymetric Survey Flow Quantile Return Period Sugar Complexes Côte d’Ivoire

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